PBDB

Opinions from P. A. Jell and J. M. Adrain 2002

'Abagnostus is a subjective synonym of Lisogoragnostus'
'Abakania belongs to Corynexochidae'
'Abakanopleura belongs to Solenopleuridae'
'Abharella belongs to Anomocaridae'
'Acadagnostus is a subjective synonym of Peronopsis'
'Acadolenus belongs to Ellipsocephalidae'
'Acanthagnostus is a subjective synonym of Clavagnostus'
'Acanthaloma is a subjective synonym of Leonaspis'
'Acanthalomina belongs to Odontopleuridae'
'Acanthocnemis is a subjective synonym of Sao'
'Acanthogramma is a subjective synonym of Sao'
'Acantholenus is a subjective synonym of Acrocephalites'
'Acanthometopus belongs to Solenopleuridae'
'Acanthomicmacca belongs to Chengkouiidae'
'Acanthoparypha belongs to Cheiruridae'
'Acanthopleurella belongs to Shumardiidae'
'Acanthopyge belongs to Lichidae'
'Acanthopyge (Jasperia) was reranked as Jasperia and belongs to Lichidae'
'Acanthopyge (Mephiarges) was reranked as Mephiarges and belongs to Lichidae'
'Acanthopyge (Mephiarges) bifida is recombined as Jasperia bifida'
'Acastava belongs to Acastidae'
'Acaste belongs to Acastidae'
'Acastella belongs to Acastidae'
'Acastellina belongs to Acastidae'
'Acastina is an objective synonym of Acaste'
'Acastocephala belongs to Acastidae'
'Acastoidea belongs to Trilobita'
'Acastoides belongs to Acastidae'
'Acastopyge belongs to Acastidae'
'Acernaspis belongs to Phacopidae'
'Acerocare belongs to Olenidae'
'Acerocarina belongs to Olenidae'
'Aceroproetus belongs to Proetidae'
'Aceroproetus acer belongs to Aceroproetus' according to Kolobova 1988
'Achatella belongs to Pterygometopidae'
'Acheilops belongs to Catillicephalidae'
'Acheilus is replaced by Peracheilus'
'Achlysopsis belongs to Ptychopariidae'
'Aciculolenus belongs to Olenidae'
'Acidaspidella belongs to Lichakephalidae'
'Acidaspides belongs to Lichakephalidae'
'Acidaspidina belongs to Lichakephalidae'
'Acidaspis belongs to Odontopleuridae'
'Acidiphorus belongs to Bathyuridae'
'Acmarhachis belongs to Agnostidae'
'Acontheus belongs to Corynexochidae'
'Acrocephalaspis belongs to Solenopleuridae'
'Acrocephalites belongs to Acrocephalitidae'
'Acrocephalops belongs to Bolaspididae'
'Acrodirotes belongs to Acrocephalitidae'
'Acrohybus is a subjective synonym of Hungaia'
'Acrolichas is a subjective synonym of Amphilichas'
'Actinolobus is a subjective synonym of Illaenus'
'Actinopeltis belongs to Cheiruridae'
'Aculeodiscus is a subjective synonym of Dawsonia'
'Acutaspis is a subjective synonym of Triangulaspis'
'Acutatagnostus is a subjective synonym of Agnostus'
'Acuticryphops belongs to Phacopidae'
'Adastocephalum belongs to Phacopidae'
'Adelogonus belongs to Damesellidae'
'Aedotes belongs to Leiostegiidae'
'Aeglina is an objective synonym of Cyclopyge'
'Aegrotocatellus belongs to Encrinuridae'
'Aeonia is an objective synonym of Proetus'
'Aethedionide belongs to Dionididae'
'Aethia belongs to Trilobita'
'Afghanocare belongs to Anomocaridae'
'Afrops belongs to Phacopidae'
'Agalatus is a subjective synonym of Inkouia'
'Agaso belongs to Agraulidae'
'Agelagma belongs to Catillicephalidae'
'Agerina belongs to Leiostegiidae'
'Aglagalia is a nomen nudum'
'Agnostardis belongs to Glyptagnostidae'
'Agnostascus is a subjective synonym of Proagnostus'
'Agnostoglossa is a subjective synonym of Ammagnostus'
'Agnostogonus belongs to Agnostina'
'Agnostus belongs to Agnostidae'
'Agnostus calvus belongs to Agnostus' according to Lake 1906
'Agnostus desideratus is recombined as Mallagnostus desideratus'
'Agnostus elkedraensis belongs to Agnostus' according to Eldredge 1902
'Agnostus elkedraensis is recombined as Itagnostus elkedraensis' according to Opik 1979
'Agnostus elkedraensis is recombined as Peronopsis elkedraensis' according to Jell 1997
'Agnostus elkedraensis is recombined as Peronopsis elkedraensis'
'Agnostus perrugatus belongs to Agnostus' according to Barrande 1872
'Agnostus perrugatus is recombined as Corrugatagnostus perrugatus'
'Agnostus pusillus belongs to Agnostus' according to Tullberg 1880
'Agnostus pusillus is recombined as Svenax pusillus' according to Opik 1979
'Agraulidae belongs to Solenopleuracea' according to Geyer and Landing 2001
'Agrauloides is a subjective synonym of Agraulos'
'Agraulopsis is a subjective synonym of Ptychoparia'
'Agraulos belongs to Agraulidae'
'Aguaraya belongs to Trilobita'
'Aiaiaspis belongs to Solenopleuridae'
'Aidarella belongs to Solenopleuridae'
'Ainoa is a subjective synonym of Holia'
'Aistagnostus belongs to Agnostidae'
'Ajacicrepida belongs to Ceratopygidae'
'Ajrikina belongs to Alsataspididae'
'Akbashichia belongs to Redlichiina'
'Akoldinioidia is a subjective synonym of Koldinioidia'
'Aksapyge is a subjective synonym of Promacropyge'
'Aksayaspis belongs to Cheilocephalidae'
'Aksayaspis convexus belongs to Aksayaspis' according to Ergaliev 2001
'Aktugaiella belongs to Remopleurididae'
'Alacephalus belongs to Edelsteinaspididae'
'Alanisia belongs to Estaingiidae'
'Alataurus belongs to Palaeolenidae'
'Albansia belongs to Solenopleuridae'
'Albertella belongs to Zacanthoididae'
'Albertellina belongs to Zacanthoididae'
'Albertelloides belongs to Zacanthoididae'
'Alberticoryphe belongs to Tropidocoryphidae'
'Alborsella belongs to Ptychaspididae'
'Alcaldops is a subjective synonym of Heliopyge'
'Alceste belongs to Styginidae'
'Aldanaspis belongs to Solenopleuridae'
'Aldonaia belongs to Aldonaiidae'
'Aldonaiidae belongs to Ptychopariida'
'Alekcinella belongs to Dokimocephalidae'
'Alemtejoia is a subjective synonym of Delgadella'
'Alimbetaspis is a subjective synonym of Jujuyaspis'
'Allobodochus belongs to Ptychagnostidae'
'Alloleiostegium is a subjective synonym of Leiostegium'
'Allolichas belongs to Lichidae'
'Alokistocare belongs to Alokistocaridae'
'Alokistocarella belongs to Alokistocaridae'
'Alomataspis belongs to Proasaphiscidae'
'Alreboaspis is a subjective synonym of Borealaspis'
'Alsataspis is a subjective synonym of Seleneceme'
'Altaepeltis belongs to Styginidae'
'Altaesajania belongs to Phacopidae'
'Altaiaspis belongs to Eulomidae'
'Altajaharpes is a nomen nudum'
'Altiocculus belongs to Alokistocaridae'
'Altiplanelaspis belongs to Trilobita'
'Altitudella belongs to Ptychopariidae'
'Alwynulus belongs to Encrinuridae'
'Amblycranium belongs to Hystricuridae'
'Ambonolium belongs to Illaenuridae'
'Amecephalina belongs to Alokistocaridae'
'Amecephalites belongs to Ptychopariidae'
'Amecephaloides belongs to Alokistocaridae'
'Amecephalus belongs to Alokistocaridae'
'Amechilus belongs to Trilobita'
'Americare is a subjective synonym of Glyphaspis'
'Ameropiltonia belongs to Proetidae'
'Ameura belongs to Proetidae'
'Amgaspididae belongs to Corynexochida'
'Amgaspis belongs to Amgaspididae'
'Amginia belongs to Anomocaridae'
'Amginoerbia belongs to Dinesidae'
'Amginouyia belongs to Utiidae'
'Amiaspis belongs to Lonchocephalidae'
'Amicus belongs to Cyclopygidae'
'Ammagnostus belongs to Ammagnostidae'
'Amorphella belongs to Aphelaspididae'
'Amphilichas belongs to Lichidae'
'Amphitryon belongs to Remopleurididae'
'Amphotonella is a subjective synonym of Amphoton'
'Ampyxella belongs to Raphiophoridae'
'Ampyxina belongs to Raphiophoridae'
'Ampyxinella belongs to Raphiophoridae'
'Ampyxinops is a subjective synonym of Malongullia'
'Amquia belongs to Llanoaspididae'
'Amurticephalus is a subjective synonym of Parachittidilla'
'Amzasskiella belongs to Eulomidae'
'Anabaraceps belongs to Paradoxididae'
'Anabaraspis is replaced by Anabaraspis'
'Anabaraspis belongs to Paradoxididae'
'Anacaenaspis belongs to Odontopleuridae'
'Anacheirurus belongs to Pilekiidae'
'Anadoxides is a subjective synonym of Metadoxides'
'Analocaspis is a subjective synonym of Rorringtonia'
'Analocaspis ursina is recombined as Rorringtonia ursina'
'Ananaspis belongs to Phacopidae'
'Anapliomera belongs to Pliomeridae'
'Anasobella belongs to Cheiruridae'
'Anataphrus belongs to Asaphidae'
'Anchiopella belongs to Calmoniidae'
'Anchiopsis belongs to Dalmanitidae'
'Ancyginaspis belongs to Cheiruridae'
'Ancyropyge belongs to Styginidae'
'Ancyropyge is a subjective synonym of Ancyropyge'
'Anderssonella belongs to Saukiidae'
'Andesaspis is a subjective synonym of Leptoplastides'
'Andesaspis (Parabolinopsis) sinensis is recombined as Leptoplastides sinensis'
'Andinacaste belongs to Calmoniidae'
'Andrarina belongs to Andrarinidae'
'Andrarinidae belongs to Asaphida'
'Andreaspis belongs to Dalmanitidae'
'Anebolithus belongs to Trinucleidae'
'Anechocephalus belongs to Pterocephaliidae'
'Anemocephalops belongs to Marjumiidae'
'Anemocephalus belongs to Dokimocephalidae'
'Aneucanthus is an objective synonym of Acontheus'
'Aneuacanthus is replaced by Aneuacanthus' according to Barrande 1856
'Angelina belongs to Olenidae'
'Angustaeva is a subjective synonym of Triangulaspis'
'Anisopyge belongs to Proetidae'
'Ankoura belongs to Kingstoniidae'
'Annamitella belongs to Leiostegiidae'
'Annamitia belongs to Alokistocaridae'
'Anomalocephalus is a subjective synonym of Ehmaniella'
'Anomocaraspis is a subjective synonym of Hundwarella'
'Anomocare belongs to Anomocaridae'
'Anomocarella belongs to Anomocarellidae'
'Anomocarellidae belongs to Asaphida'
'Anomocarina belongs to Anomocaridae'
'Anomocarioides belongs to Anomocaridae'
'Anomocariopsis belongs to Anomocaridae'
'Anopocare is a subjective synonym of Peltura'
'Anopocodia belongs to Diceratocephalidae'
'Anoria belongs to Dolichometopidae'
'Anorina is an objective synonym of Eoasaphus'
'Antagmidae belongs to Ptychopariida'
'Antagmopleura belongs to Utiidae'
'Antagmus belongs to Antagmidae'
'Antatlaeva is a nomen nudum'
'Antatlasia belongs to Ellipsocephalidae'
'Anthes is an objective synonym of Peltura'
'Anuloides belongs to Dokimocephalidae'
'Aocaspis belongs to Nileidae'
'Aojia is a subjective synonym of Lisania'
'Aotagnostus is a subjective synonym of Ptychagnostus'
'Aotagnostus culminosus is recombined as Ptychagnostus culminosus'
'Apachia belongs to Dokimocephalidae'
'Apachilites is a subjective synonym of Apachia'
'Apatokephalina belongs to Remopleurididae'
'Apatokephaloides belongs to Remopleurididae'
'Apatokephalops belongs to Remopleurididae'
'Apatokephalus belongs to Remopleurididae'
'Apatolichas belongs to Lichidae'
'Apedopyanus is a subjective synonym of Hysteropleura'
'Aphelaspididae belongs to Asaphida'
'Aphelaspis belongs to Aphelaspididae'
'Apheloides belongs to Aphelaspididae'
'Aphelotoxon belongs to Phylacteridae'
'Apianurus belongs to Odontopleuridae'
'Aplexura belongs to Liostracinidae'
'Aplotaspis is a subjective synonym of Charchaqia'
'Apocalymene belongs to Calymenidae'
'Apolichas is a subjective synonym of Lichas'
'Apomodocia belongs to Parabolinoididae'
'Aponileus is a subjective synonym of Psephosthenaspis'
'Apoplanias belongs to Olenidae'
'Aposolenopleura is a subjective synonym of Ptychopleurites'
'Appendicysta belongs to Archegoninae' according to Hahn and Brauckmann 1989
'Appendicysta belongs to Proetidae'
'Aprathia belongs to Archegoninae' according to Owens and Tilsley 1995
'Aprathia belongs to Proetidae'
'Araiocaris belongs to Asaphidae'
'Araiopleura belongs to Alsataspididae'
'Arapahoia belongs to Plethopeltidae'
'Archaeagnostus belongs to Peronopsidae'
'Archaeops is a subjective synonym of Eoredlichia'
'Archaeuloma belongs to Eulomidae'
'Archegonus belongs to Proetidae'
'Archegonus (Angustibole) belongs to Archegonus'
'Archegonus (Angustibole) winterbergensis belongs to Archegonus (Angustibole)' according to Hahn 1965
'Archegonus (Archegonus) belongs to Archegonus' according to Burmeister 1843
'Archegonus (Crassibole) was reranked as Crassibole and belongs to Proetidae'
'Archegonus (Merebolina) belongs to Archegonus' according to Grandl 1980
'Archegonus (Merebolina) was reranked as Merebolina and belongs to Proetidae'
'Archegonus (Merebolina) merensis belongs to Archegonus (Merebolina)' according to Gandl 1980
'Arcifimbria belongs to Pagodiidae'
'Arcticalymene belongs to Calymenidae'
'Arcticeraurinella belongs to Cheiruridae'
'Arcticormistonia is a subjective synonym of Pseudodechenella'
'Arcticormistonia edgecombei is recombined as Pseudodechenella edgecombei'
'Arctinuroides is a subjective synonym of Pseudotupolichas'
'Arctinurus belongs to Lichidae'
'Arctipeltis belongs to Styginidae'
'Arcuolimbus belongs to Llanoaspididae'
'Arduennella belongs to Homalonotidae'
'Areia belongs to Cheiruridae'
'Areiaspis belongs to Cheiruridae'
'Arellanella belongs to Alokistocaridae'
'Arethusina is an objective synonym of Aulacopleura'
'Arethusina is replaced by Arethusina' according to Barrande 1852
'Argentinops is a subjective synonym of Hungioides'
'Argentopyge belongs to Dalmanitidae'
'Argunaspis belongs to Ellipsocephalidae'
'Ariaspis belongs to Damesellidae'
'Arion is an objective synonym of Agraulos'
'Arionides is replaced by Arionides' according to Barrande 1847
'Arionellus is replaced by Arionellus' according to Barrande 1852
'Arionellus pustulatus is recombined as Glaphurus pustulatus'
'Aristoharpes is a subjective synonym of Selenoharpes'
'Aristokainella is a subjective synonym of Apatokephalops'
'Armagnostus belongs to Agnostina'
'Armonia is a subjective synonym of Modocia'
'Armorigreenops belongs to Acastidae'
'Arraphus belongs to Harpetidae'
'Arthricocephalus belongs to Oryctocephalidae'
'Arthricocephalites is a subjective synonym of Arthricocephalus'
'Arthricocephalus (Euarthricocephalus) belongs to Arthricocephalus' according to Ju 1983
'Arthricocephalus (Euarthricocephalus) was reranked as Euarthricocephalus and belongs to Oryctocephalidae'
'Artokephalus belongs to Remopleurididae'
'Asaphellina belongs to Taihungshaniidae'
'Asaphelloides is a subjective synonym of Asaphellus'
'Asaphellus belongs to Asaphidae'
'Asaphiscus belongs to Asaphiscidae'
'Asaphiscus (Blainia) was reranked as Blainia and belongs to Asaphiscidae'
'Asaphoon is a subjective synonym of Asaphellus'
'Asaphopsis belongs to Taihungshaniidae'
'Asaphopsis intermedia is recombined as Hungioides intermedia'
'Asaphopsoides belongs to Hungaiidae'
'Asaphus belongs to Asaphidae'
'Asaphus (Ampyx) was reranked as Ampyx and belongs to Raphiophoridae'
'Asaphus (Isotelus) gigas is recombined as Isotelus gigas'
'Platypeltis is replaced by Platypeltoides'
'Asaphus (Platypeltis) croftii is recombined as Platypeltoides croftii'
'Ascetopeltis belongs to Proetidae'
'Ascionepea belongs to Nepeidae'
'Asiatella belongs to Ellipsocephalidae'
'Asilluchus belongs to Olenidae'
'Asioptychaspis is a subjective synonym of Ptychaspis'
'Asperocare belongs to Dolichometopidae'
'Aspidaeglina belongs to Cyclopygidae'
'Asteraspis is an objective synonym of Deiracephalus'
'Asteromajia is a subjective synonym of Temnoura'
'Asteropyge belongs to Acastidae'
'Asthenaspis belongs to Redlichinidae'
'Asthenopsis belongs to Ptychopariidae'
'Astycoryphe belongs to Tropidocoryphidae'
'Ataktaspis is a subjective synonym of Komaspidella'
'Atdabanella belongs to Dorypygidae'
'Athabaskia belongs to Dolichometopidae'
'Athabaskiella belongs to Dolichometopidae'
'Atopasaphus belongs to Asaphidae'
'Atopidae belongs to Ptychopariida'
'Atops belongs to Atopidae'
'Atractocybeloides belongs to Encrinuridae'
'Atractocybeloides berneri belongs to Atractocybeloides' according to Krueger 1991
'Atractopyge belongs to Encrinuridae'
'Atratebia belongs to Remopleuridae'
'Aulacodigma belongs to Diceratocephalidae'
'Aulacodiscus is replaced by Opsidiscus' according to Westergard 1950
'Aulacoparia belongs to Asaphidae'
'Aulacoparia (Aulacoparina) was reranked as Aulacoparina and belongs to Asaphidae'
'Aulacopleura belongs to Aulacopleuridae'
'Paraaulacopleura is a subjective synonym of Aulacopleura'
'Aulacopleurella is a subjective synonym of Otarion'
'Auritama belongs to Auritamidae'
'Auritamidae belongs to Asaphida'
'Austinvillia belongs to Ptychopariidae'
'Australaspis belongs to Saukiandidae'
'Australoacaste belongs to Calmoniidae'
'Australoharpes is a subjective synonym of Dubhglasina'
'Australokaskia belongs to Proetidae'
'Australops belongs to Calmoniidae'
'Australopyge belongs to Asaphidae'
'Australoscutellum belongs to Styginidae'
'Austosinia is a subjective synonym of Changqingia'
'Austrosinia is a subjective synonym of Changqingia' according to Zan 1992
'Autolichas is a subjective synonym of Lichas'
'Autoloxolichas belongs to Lichidae'
'Avalanchurus belongs to Encrinuridae'
'Avalonia belongs to Atopidae'
'Avascutellum belongs to Styginidae'
'Avonaspis is a subjective synonym of Welleraspis'
'Avonina belongs to Avoninidae'
'Axagnostus is a subjective synonym of Acadagnostus'
'Babakovia is a subjective synonym of Kooteniella'
'Babinops belongs to Phacopidae'
'Badainjaranaspis belongs to Papyriaspididae'
'Badulesia belongs to Solenopleuridae'
'Baikonuraspis belongs to Olenidae'
'Bailiaspis belongs to Conocoryphidae'
'Bailielloides inexpectans belongs to Bailielloides'
'Bainella is a subjective synonym of Anchiopella'
'Bajangoliaspis belongs to Palaeolenidae'
'Balangia belongs to Oryctocephalidae'
'Balderia belongs to Menomoniidae'
'Balizoma belongs to Encrinuridae'
'Balnibarbi belongs to Olenidae'
'Baltagnostus belongs to Diplagnostidae'
'Baltoparadoxides belongs to Paradoxididae'
'Bandalaspis belongs to Eurekiidae'
'Baniaspis belongs to Acastidae'
'Baojingia is a subjective synonym of Eoshengia'
'Bapingaspis belongs to Proetidae'
'Bapingaspis bapingensis belongs to Bapingaspis' according to Yuan 1988
'Barklyella belongs to Oryctocephalidae'
'Barrandagnostus is a subjective synonym of Glyptagnostus'
'Barrandia belongs to Nileidae'
'Bartoninus is a subjective synonym of Ceraurinella'
'Basanellus belongs to Dolichometopidae'
'Basidechenella belongs to Proetidae'
'Basilicoides is a subjective synonym of Thysanopyge'
'Basilicus belongs to Asaphidae'
'Basiliella is a subjective synonym of Basilicus'
'Basocephalus belongs to Dorypygidae'
'Batchatiella is a nomen nudum'
'Batenioides belongs to Agraulidae'
'Bathycheilidae belongs to Phacopida'
'Bathycheilus belongs to Bathycheilidae'
'Bathyholcus belongs to Ptychopariidae'
'Bathynotellus belongs to Chengkouaspidae'
'Bathynotus belongs to Chengkouaspidae'
'Bathyocos belongs to Ptychopariidae'
'Bathyurellus belongs to Bathyuridae'
'Bathyurina is a subjective synonym of Jeffersonia'
'Bathyuriscellus belongs to Jakutidae'
'Bathyuriscidella belongs to Dolichometopidae'
'Bathyuriscops is a subjective synonym of Annamitella'
'Bathyuriscopsis belongs to Jakutidae'
'Bathyuriscus belongs to Dolichometopidae'
'Bathyuriscus (Poliella) was reranked as Poliella and belongs to Dolichometopidae'
'Bathyurus belongs to Bathyuridae'
'Bathyurus (Raymondites) was reranked as Raymondites and belongs to Bathyuridae'
'Batocara belongs to Encrinuridae'
'Battus is an objective synonym of Agnostus'
'Batyraspis is a subjective synonym of Taoyuania'
'Bavarilla belongs to Bavarillidae'
'Bavarillidae belongs to Phacopida'
'Bayfieldia belongs to Eurekiidae'
'Beigongia belongs to Pterocephaliidae'
'Beishanella belongs to Centropleuridae'
'Beldirella belongs to Alokistocaridae'
'Belenopyge is a subjective synonym of Lobopyge'
'Belgibole belongs to Proetidae'
'Bellacartwrightia belongs to Acastidae'
'Bellaspidella belongs to Dokimocephalidae'
'Bellaspis belongs to Dokimocephalidae'
'Bellefontia belongs to Asaphidae'
'Belliceps belongs to Chengkouaspididae'
'Belovia belongs to Lichakephalidae'
'Beltella is a subjective synonym of Leptoplastides'
'Bemaspis is a subjective synonym of Taenicephalus'
'Benedettia belongs to Pliomeridae'
'Benesovella belongs to Proetidae'
'Benxiaspis is a subjective synonym of Kunmingaspis'
'Beothuckia belongs to Dokimocephalidae'
'Berabichia is a subjective synonym of Ptychoparopsis'
'Bergamia belongs to Trinucleidae'
'Bergerolimbus is a nomen nudum'
'Bergeronia is an objective synonym of Protolenus'
'Bergeroniaspis belongs to Ellipsocephalidae'
'Bergeroniellus belongs to Ellipsocephalidae'
'Bergeronites belongs to Damesellidae'
'Berkeia belongs to Dikelocephalidae'
'Berkutaspis belongs to Nileidae'
'Bernia is a subjective synonym of Parabolinoides'
'Bernicella is a subjective synonym of Oligometopus'
'Bessazoon belongs to Dalmanitidae'
'Bestjubella belongs to Lichakephalidae'
'Bettonia is replaced by Bettonolithus' according to Morris 1988
'Bettonolithus belongs to Trinucleidae'
'Bevanopsis belongs to Encrinuridae'
'Biaverta belongs to Menomoniidae'
'Bicaspis is a subjective synonym of Protypus'
'Bicella belongs to Antagmidae'
'Bicornipyge is a subjective synonym of Dichelepyge'
'Bicyclopyge is a subjective synonym of Pricyclopyge'
'Bidjinella belongs to Chengkouiidae'
'Bienella belongs to Pagodiidae'
'Bienvillia belongs to Olenidae'
'Bifodina belongs to Trilobita'
'Bigotina belongs to Bigotinidae'
'Bigotinella belongs to Bigotinidae'
'Bigotinidae belongs to Ptychopariida'
'Bigotinops belongs to Bigotinidae'
'Bigranulella belongs to Solenopleuridae'
'Billingsaspis belongs to Ptychopariidae'
'Binodaspis belongs to Ptychopariidae'
'Biolgina is a subjective synonym of Peltabellia'
'Biolgina sibirica is recombined as Peltabellia sibirica' according to Zhou and Fortey 1986
'Biragnostus is a subjective synonym of Aspidagnostus'
'Birmanites belongs to Asaphidae'
'Bitumulina belongs to Proetidae'
'Blackwelderia belongs to Damesellidae'
'Blackwelderioides belongs to Damesellidae'
'Blainiopsis belongs to Asaphiscidae'
'Blairella belongs to Ptychopariidae'
'Blandiaspis belongs to Tsinaniidae'
'Blandicephalus belongs to Dikelocephalidae'
'Blanodalmanites belongs to Dalmanitidae'
'Blayacina belongs to Ellipsocephalidae'
'Blosyropsis belongs to Remopleurididae'
'Blountia belongs to Kingstoniidae'
'Blountiella belongs to Asaphiscidae'
'Blountina belongs to Asaphiscidae'
'Blystagnostus belongs to Agnostina'
'Bodenbenderia is a subjective synonym of Brackebuschia'
'Boeckaspis is a subjective synonym of Sphaerophthalmella'
'Bohemaspis is a subjective synonym of Bergamia'
'Bohemaspis is a subjective synonym of Bergamia' according to Shaw 1995
'Bohemilla belongs to Bohemillidae'
'Bohemoharpes belongs to Harpetidae'
'Bohemolichas is a subjective synonym of Uralichas'
'Bohemopyge belongs to Asaphidae'
'Bojocoryphe belongs to Tropidocoryphidae'
'Bojokoralaspis is a subjective synonym of Eoleonaspis'
'Bojoscutellum belongs to Styginidae'
'Bolaspidella belongs to Menomoniidae'
'Bolaspidellus belongs to Lonchocephalidae'
'Bolaspidina belongs to Ptychopariidae'
'Bolaspis belongs to Bolaspididae'
'Bolbocephalus belongs to Bathyuridae'
'Bolbochasmops belongs to Pterygometopidae'
'Bolivianaspis is a subjective synonym of Tarijactinoides'
'Bolivianaspis is a subjective synonym of Tarijactinoides' according to Eldredge and Branisia 1980
'Bolivicrania belongs to Proetidae'
'Boliviproetus branisai belongs to Boliviproetus' according to Eldredge and Ormiston 1979
'Boliviproetus branisai belongs to Boliviproetus' according to Eldredge and Ormiston 1979
'Bollandia belongs to Proetidae'
'Bollandia (Capricornia) was reranked as Capricornia and belongs to Proetidae'
'Bollandia (Capricornia) queenslandica is recombined as Capricornia queenslandica'
'Bondarevites belongs to Olenidae'
'Bondonella belongs to Neltneriidae'
'Bonnaria belongs to Dorypygidae'
'Bonnaspis belongs to Corynexochidae'
'Bonneterrina belongs to Cedariidae'
'Bonniella belongs to Dorypygidae'
'Bonniopsis belongs to Dorypygidae'
'Borealarges belongs to Lichidae'
'Borealaspis belongs to Cheiruridae'
'Borealia belongs to Proetidae'
'Borealia laevis belongs to Borealia' according to Maksimova 1977
'Boreoscutellum belongs to Styginidae'
'Borkopleura belongs to Odontopleuridae'
'Bornemannaspis belongs to Gigantopygidae'
'Bornemannia is a subjective synonym of Poliella'
'Bornholmaspis belongs to Cheiruridae'
'Borthaspidella belongs to Nileidae'
'Borthaspis is an objective synonym of Psilocephalinella'
'Boschchekulia belongs to Ceratopygidae'
'Botomella belongs to Dinesidae'
'Botrioides belongs to Trinucleidae'
'Bouleia belongs to Calmoniidae'
'Bounyongia is a subjective synonym of Ceratocephala'
'Bowmania belongs to Harpetidae'
'Brachyampyx is an objective synonym of Ampyx'
'Brachyaspidion belongs to Kingstoniidae'
'Brachyaspis belongs to Asaphidae'
'Brachyhipposiderus belongs to Harpetidae'
'Brachymetopina is an objective synonym of Brachymetopus'
'Brachymetopus belongs to Brachymetopidae'
'Coignouina is a subjective synonym of Namuropyge'
'Brachypleura is a subjective synonym of Amphitryon'
'Brackebuschia belongs to Leiostegiidae'
'Bradocryphaeus belongs to Acastidae'
'Bradyfallotaspis belongs to Archaeaspididae'
'Braintreella belongs to Solenopleuridae'
'Brandysops is a subjective synonym of Bergamia'
'Branisaspis belongs to Asaphidae'
'Branisella is a subjective synonym of Maurotarion'
'Brassicicephalus is a subjective synonym of Exigua'
'Breizhops belongs to Acastidae'
'Breviagnostus is a subjective synonym of Hypagnostus'
'Brevidiscus is a subjective synonym of Calodiscus'
'Breviphillipsia belongs to Proetidae'
'Breviscutellum belongs to Styginidae'
'Brevitermierella belongs to Ellipsocephalidae'
'Brianurus belongs to Encrinuridae'
'Bridgeia belongs to Menomoniidae'
'Briscoia belongs to Dikelocephalidae'
'Bristolia belongs to Olenellidae'
'Broeggerolithus belongs to Trinucleidae'
'Bromella belongs to Pterocephaliidae'
'Brongniartella belongs to Homalonotidae'
'Bronteopsis belongs to Styginidae'
'Brontes is replaced by Bronteus' according to Goldfuss 1843
'Brontes is replaced by Goldius' according to deKoninck 1841
'Bronteus is an objective synonym of Goldius'
'Bronteus (Thysanopeltis) aculeatus belongs to Bronteus (Thysanopeltis)' according to Weber 1945
'Bronteus (Thysanopeltis) aculeatus is recombined as Weberopeltis aculeatus' according to Maksimova 1959
'Bronteus ekwanaspis is recombined as Ekwanoscutellum ekwanaspis'
'Bronteus ekwanaspis is recombined as Ekwanoscutellum ekwanaspis' according to Pribyl and Vanek 1971
'Bronteus richteri is recombined as Mulciberaspis richteri'
'Bronteus romanovskii is recombined as Eokosovopeltis romanovskii'
'Brunswickia belongs to Ptychopariidae'
'Brutaspis belongs to Acrocephalitidae'
'Bruxaspis is a subjective synonym of Anacaenaspis'
'Bubupeltina belongs to Styginidae'
'Buchiproetus belongs to Tropidocoryphidae'
'Bucksella is a subjective synonym of Lonchocephalus'
'Buenaspis belongs to Nektaspida'
'Bufoceraurus belongs to Cheiruridae'
'Buitella belongs to Conokephalinidae'
'Bulbaspis belongs to Raphiophoridae'
'Bullicephalus is a subjective synonym of Eophacops'
'Bumastides belongs to Nileidae'
'Bumastus belongs to Styginidae'
'Bumastus (Bumastoides) was reranked as Bumastoides and belongs to Illaenidae'
'Burmeisterella belongs to Homalonotidae'
'Burmeisteria belongs to Homalonotidae'
'Burminresia belongs to Asaphidae'
'Burnetia is replaced by Burnetiella'
'Burnetiella belongs to Dokimocephalidae'
'Burtonops belongs to Phacopidae'
'Buttsia belongs to Catillicephalidae'
'Buttsina is a subjective synonym of Komaspidella'
'Bynumia belongs to Kingstoniidae'
'Bynumiella is a subjective synonym of Clelandia'
'Bynumina belongs to Kingstoniidae'
'Bythicheilus belongs to Alokistocaridae'
'Caborcella belongs to Ptychopariidae'
'Cainatops belongs to Conocoryphidae'
'Calagnostus is a subjective synonym of Pseudorhaptagnostus'
'Calculites is a subjective synonym of Theodenisia'
'Calipernurus belongs to Odontopleuridae'
'Callaspis belongs to Anomocaridae'
'Callavalonia is an objective synonym of Cephalacanthus'
'Callavia belongs to Holmiidae'
'Calliops belongs to Pterygometopidae'
'Calmonia belongs to Calmoniidae'
'Calmoniidae belongs to Phacopida'
'Calocephalites belongs to Dokimocephalidae'
'Calvinella belongs to Saukiidae'
'Calvipelta belongs to Kingstoniidae'
'Calybole belongs to Proetidae'
'Calymene macrophtalma is recombined as Eodalmanitina macrophthalma'
'Calymene mammillata is recombined as Thelecalymene mammillata' according to Whittington 1971
'Calymene pulchra is recombined as Prionocheilus pulchra'
'Calymenella belongs to Calymenidae'
'Calymenesun [misspelled as Calymenesum] belongs to Calymenidae'
'Calymenidius belongs to Lonchocephalidae'
'Calymenopsis is a subjective synonym of Euloma'
'Calyptaulax belongs to Pterygometopidae'
'Camaraspis belongs to Pterocephaliidae'
'Camaraspoides is a subjective synonym of Camaraspis' according to Grant 1965
'Camaraspoides is a subjective synonym of Camaraspis'
'Cambroinyoella belongs to Nevadiidae'
'Cambropallas belongs to Holmiidae'
'Cambrunicornia belongs to Ellipsocephalidae'
'Camsellia belongs to Proetidae'
'Canningella belongs to Pliomeridae'
'Canotagnostus is a subjective synonym of Ptychagnostus'
'Caphyra is a subjective synonym of Amphytrion'
'Carausia is a subjective synonym of Holocephalina'
'Carbonocoryphe belongs to Proetidae'
'Carbonoproetus belongs to Proetidae'
'Carinamala belongs to Cedariidae'
'Carinobasiliella is a subjective synonym of Basilicus'
'Carinocranium belongs to Raphiophoridae'
'Carinopyge belongs to Pterygometopidae'
'Carmon belongs to Trilobita'
'Carnicia is a subjective synonym of Chuanoproetus'
'Carolinites belongs to Telephinidae'
'Carolinites bulbosus is corrected as Carolinites bulbosa and belongs to Carolinites'
'Carrickia is a subjective synonym of Phorocephala'
'Catadoxides belongs to Ellipsocephalidae'
'Catasolenopleura belongs to Solenopleuridae'
'Cathayanella belongs to Ptychopariidae'
'Catillicephala belongs to Catillicephalidae'
'Catuniella belongs to Conokephalinidae'
'Caulaspis belongs to Lonchocephalidae'
'Caznaia belongs to Saukiidae'
'Cedaraspis belongs to Norwoodiidae'
'Cedarellus is a subjective synonym of Maladioidella'
'Cedaria belongs to Cedariidae'
'Cedariidae belongs to Ptychopariida'
'Cedarina belongs to Cedariidae'
'Cekovia belongs to Styginidae'
'Celmus belongs to Dimeropygidae'
'Celtencrinurus belongs to Encrinuridae'
'Centauropyge belongs to Acastidae'
'Centonella belongs to Dolichometopidae'
'Centriproetus belongs to Tropidocoryphidae'
'Cephalacanthus belongs to Cephalacanthidae'
'Cephalacanthus is a subjective synonym of Callavia'
'Ceratagnostus is a subjective synonym of Doryagnostus'
'Ceratocara belongs to Odontopleuridae'
'Ceratocephala belongs to Odontopleuridae'
'Ceratocephala (Ceratocephalina) was reranked as Ceratocephalina and belongs to Odontopleuridae'
'Ceratolithus is a subjective synonym of Ningkianolithus'
'Ceratonurus belongs to Odontopleuridae'
'Ceratopeltis belongs to Bathyuridae'
'Ceratoproetus belongs to Proetidae'
'Ceratoproetus guangnanensis belongs to Ceratoproetus' according to Luo and Jiang 1985
'Ceratopyge belongs to Ceratopygidae'
'Ceraurinella belongs to Cheiruridae'
'Ceraurinium belongs to Cheiruridae'
'Ceraurinus belongs to Cheiruridae'
'Cerauroides is a subjective synonym of Crotalocephalus'
'Cerauromeros belongs to Cheiruridae'
'Cerauropeltis belongs to Cheiruridae'
'Ceraurus belongs to Cheiruridae'
'Eoceraurus is a subjective synonym of Ceraurus'
'Ceraurus bispinosus belongs to Ceraurus' according to Raymond and Barton 1913
'Ceraurus bispinosus belongs to Ceraurus'
'Cermataspis belongs to Acrocephalitidae'
'Cermatops belongs to Ceratopygidae'
'Cernuolimbus belongs to Pterocephaliidae'
'Ceronocare belongs to Kaolishaniidae'
'Chacomurus belongs to Cheiruridae'
'Chakasskia belongs to Dinesidae'
'Chakasskinella belongs to Dinesidae'
'Champlainia belongs to Ptychopariidae'
'Chancia belongs to Alokistocaridae'
'Chanciaopsis belongs to Alokistocaridae'
'Changaspis is a subjective synonym of Lancastria'
'Changia belongs to Ptychaspididae'
'Changshaniidae belongs to Ptychopariida'
'Changshanocephalus belongs to Changshaniidae'
'Charchaqia belongs to Ceratopygidae'
'Charchaquia is a misspelling of Charchaqia'
'Chariocephalus belongs to Elviniidae'
'Charybdaspis is a subjective synonym of Radiaspis'
'Chasmops belongs to Pterygometopidae'
'Chatiania belongs to Corynexochidae'
'Chatiania (Eochatiania) was reranked as Eochatiania and belongs to Corynexochidae'
'Chatiania (Eochatiania) laevigata is recombined as Eochatiania laevigata'
'Chatkalagnostus belongs to Metagnostidae'
'Chattiaspis belongs to Dalmanitidae'
'Chauffouraspis belongs to Proetidae'
'Chauffouraspis andegavensis belongs to Chauffouraspis' according to Pillet 1973
'Chaunoproetus is corrected as Chuanoproetus and belongs to Proetidae'
'Cheilocephalidae belongs to Corynexochida'
'Cheilocephalus belongs to Cheilocephalidae'
'Suturikephalion is a subjective synonym of Cheiropyge'
'Cheiruroides belongs to Oryctocephalidae'
'Cheirurus belongs to Cheiruridae'
'Cheirurus (Pseudosphaerexochus) was reranked as Pseudosphaerexochus and belongs to Cheiruridae'
'Cheirurus (Sphaerocoryphe) hubneri belongs to Cheirurus (Sphaerocoryphe)' according to Schmidt 1881
'Cheirurus (Sphaerocoryphe) hubneri is recombined as Sphaerocoryphe hubneri' according to Schmidt 1907
'Cheirurus bifurcatus belongs to Cheirurus' according to Barrande 1852
'Cheirurus bifurcatus is recombined as Ratinkaspis bifurcatus' according to Pribyl and Vanek 1977
'Chelidonocephalus belongs to Proasaphiscidae'
'Chenaspis is a subjective synonym of Rorringtonia'
'Chengjiangaspis belongs to Redlichiidae'
'Chengkouia is a subjective synonym of Acanthomicmacca'
'Chengkouia cylindrica belongs to Chengkouia' according to Qian and Yao 1974
'Chengkouiidae belongs to Corynexochida'
'Chiarumanipyge belongs to Calmoniidae'
'Chiawangella belongs to Damesellidae'
'Chienaspis is a subjective synonym of Lancastria'
'Chilometopus belongs to Dolichometopidae'
'Chilonorria belongs to Dolichometopidae'
'Chimaerastella belongs to Acastidae'
'Chiozoon belongs to Cheiruridae'
'Diandongaspidella is a subjective synonym of Chittidilla'
'Diandongaspis is replaced by Diandongaspidella'
'Chittidilla (Diandongaspis) diandongensis is recombined as Diandongaspidella diandongensis'
'Chlupacula belongs to Proetidae'
'Chlustinia belongs to Odontopleuridae'
'Chlustinia [misspelled as Clustinia] belongs to Odontopleurida' according to Sepkoski 2002
'Cholopilus belongs to Leiostegiidae'
'Chomatopyge belongs to Toernquistiidae'
'Chondragraulina belongs to Utiidae'
'Chondragraulos belongs to Utiidae'
'Chondragraulos [misspelled as Chondagraulos] belongs to Corynexochida' according to Sepkoski 2002
'Chondranomocare belongs to Anomocaridae'
'Chondrinouyina belongs to Namanoiidae'
'Chondroparia belongs to Agraulidae'
'Choneilobarges is a subjective synonym of Hemiarges'
'Chosenia belongs to Leiostegiidae'
'Chotecops belongs to Phacopidae'
'Chuangia is a subjective synonym of Schantungia'
'Chuangiopsis belongs to Leiostegiidae'
'Chuanqianoproetus belongs to Proetidae'
'Chuchiaspis belongs to Zacanthoididae'
'Chulanolenus belongs to Estaingiidae'
'Chungkingaspis is a subjective synonym of Leptoplastides'
'Churkinia belongs to Metadoxididae'
'Ciceragnostus is a subjective synonym of Leiagnostus'
'Cilia belongs to Pterocephaliidae'
'Ciliocephalus belongs to Hungaiidae'
'Ciliscutellum belongs to Styginidae'
'Cinnella belongs to Asaphiscidae'
'Circulocrania belongs to Cyclopygidae'
'Cirquella belongs to Nevadiidae'
'Clappaspis is a subjective synonym of Ehmaniella'
'Clariondia belongs to Saukiandidae'
'Clavagnostus belongs to Clavagnostidae'
'Leptagnostus is a subjective synonym of Clavagnostus'
'Leptagnostus is a subjective synonym of Clavagnostus' according to Shergold and Laurie 1997
'Paraclavagnostus is a subjective synonym of Clavagnostus'
'Clavaspidella belongs to Dolichometopidae'
'Clavatellus belongs to Alsataspididae'
'Clavibole belongs to Proetidae'
'Clavigellus belongs to Corynexochidae'
'Clelandia belongs to Kingstoniidae'
'Clevelandella is a subjective synonym of Aphelaspis'
'Cliffia belongs to Phylacteridae'
'Cobboldus is a subjective synonym of Callavia'
'Cochliorrhoe is a subjective synonym of Bergamia'
'Coelaspis is a subjective synonym of Elrathiella'
'Coenaspis belongs to Menomoniidae'
'Coleopachys is a subjective synonym of Meteoraspis'
'Collyrolenus is a subjective synonym of Myopsolenus'
'Colobinion belongs to Pliomeridae'
'Colossaspis belongs to Lichakephalidae'
'Colpocoryphe belongs to Calymenidae'
'Colpocoryphoides is a subjective synonym of Pharostomina'
'Comanchia belongs to Idahoiidae'
'Comanchia minus belongs to Comanchia'
'Comluella belongs to Ellipsocephalidae'
'Compsocephalus belongs to Dinesidae'
'Comptonaspis belongs to Proetidae'
'Comura belongs to Acastidae'
'Conaspis belongs to Dokimocephalidae'
'Conicephalus belongs to Solenopleuridae'
'Coniproetus (Ryckholtia) was reranked as Ryckholtia and belongs to Proetidae'
'Conocephalites is an objective synonym of Conocoryphe'
'Conocephalites (Bavarilla) hofensis is recombined as Bavarilla hofensis'
'Conocephalites cordillerae is recombined as Elrathina cordillerae'
'Conococheaguea belongs to Harpetidae'
'Conococheaquea is a misspelling of Conococheaguea'
'Conocoryphe belongs to Conocoryphidae'
'Conocoryphe (Bailiella) was reranked as Bailiella and belongs to Conocoryphidae'
'Conocoryphe (Conocephalites) kingii is recombined as Elrathia kingi'
'Liocephalus is a subjective synonym of Bailiella'
'Conocoryphidae belongs to Ptychopariida'
'Conoides belongs to Asaphiscidae'
'Conokephalina belongs to Conokephalinidae'
'Conokephalinidae belongs to Ptychopariida'
'Conoparia is a subjective synonym of Otarion'
'Conophillipsia belongs to Proetidae'
'Conophrys belongs to Shumardiidae'
'Conopolus belongs to Ptychopariidae'
'Conoredlichia belongs to Redlichiidae'
'Constantina belongs to Proetidae'
'Contracheirurus belongs to Cheiruridae'
'Coosella belongs to Crepicephalidae'
'Coosia belongs to Crepicephalidae'
'Coosina belongs to Crepicephalidae'
'Corbina belongs to Eurekiidae'
'Corbinia belongs to Eurekiidae'
'Cordapeltis is a subjective synonym of Chotecops'
'Coreanocephalus is a subjective synonym of Changia'
'Cornovica is a subjective synonym of Dindymene'
'Cornucocoryphe is a subjective synonym of Cainatops'
'Cornuproetus belongs to Tropidocoryphidae'
'Cornuproetus (Eopiriproetus) was reranked as Eopiriproetus and belongs to Tropidocoryphidae'
'Cornuproetus (Macroblepharum) was reranked as Macroblepharum and belongs to Tropidocoryphidae'
'Cornuproetus (Tafilaltaspis) was reranked as Tafilaltaspis and belongs to Tropidocoryphidae'
'Cornuproetus (Vicinoproetus) was reranked as Vicinoproetus and belongs to Tropidocoryphidae'
'Cornuproetus (Voigtaspis) was reranked as Voigtaspis and belongs to Tropidocoryphidae'
'Cornuscutellum belongs to Styginidae'
'Coronaspis belongs to Encrinuridae'
'Coronocephalina is a subjective synonym of Coronocephalus'
'Coronocephalus belongs to Encrinuridae'
'Coronocephalus changningensis belongs to Coronocephalus' according to Zhang 1974
'Coronura belongs to Dalmanitidae'
'Corrugatagnostus belongs to Metagnostidae'
'Corycephalus belongs to Dalmanitidae'
'Corydocephalus is a subjective synonym of Trochurus'
'Corynexochidae belongs to Corynexochida'
'Corynexochides belongs to Dolichometopidae'
'Corynexochina belongs to Corynexochidae'
'Corynexochus belongs to Corynexochidae'
'Corynexochus (Bonnia) was reranked as Bonnia and belongs to Dorypygidae'
'Costadiscus is a subjective synonym of Abakolia'
'Costonia belongs to Trinucleidae'
'Cotalagnostus belongs to Peronopsidae'
'Couloumania is a subjective synonym of Conocoryphe'
'Courtessolium belongs to Cheiruridae'
'Craigheadia belongs to Styginidae'
'Crassifimbra belongs to Antagmidae'
'Cremastoglottos is a subjective synonym of Girvanopyge'
'Crepicephalus belongs to Crepicephalidae'
'Crepichilella belongs to Marjumiidae'
'Cristagnostus is a subjective synonym of Linguagnostus'
'Crithias is a subjective synonym of Sao'
'Croixana belongs to Parabolinoididae'
'Cromus belongs to Encrinuridae'
'Crossoura belongs to Trilobita'
'Crotalocephalides belongs to Cheiruridae'
'Crotalocephalina belongs to Cheiruridae'
'Crotalocephalus belongs to Cheiruridae'
'Crotalurus is a subjective synonym of Celmus'
'Crozonaspis belongs to Dalmanitidae'
'Crucicephalus belongs to Eulomidae'
'Crusoia belongs to Solenopleuridae'
'Cryphaeoides belongs to Calmoniidae'
'Cryphina belongs to Acastidae'
'Cryptoderaspis belongs to Catillicephalidae'
'Cryptolithoides belongs to Trinucleidae'
'Cryptolithus belongs to Trinucleidae'
'Ctenocephalus belongs to Conocoryphidae'
'Ctenopyge belongs to Olenidae'
'Ctenoscutellum is a subjective synonym of Avascutellum'
'Culipagnostus is a subjective synonym of Clavagnostus'
'Culmenaspis belongs to Ellipsocephalidae'
'Cummingella belongs to Proetidae'
'Curiaspis belongs to Trilobita'
'Curriella belongs to Encrinuridae'
'Cuyanaspis belongs to Trilobita'
'Cybantyx belongs to Styginidae'
'Cybele belongs to Encrinuridae'
'Cybelella [misspelled as Cybellela] belongs to Phacopida' according to Sepkoski 2002
'Cybellela is a subjective synonym of Atractopyge'
'Cybelina is a subjective synonym of Cybele'
'Cybeloides belongs to Encrinuridae'
'Cybelopsis belongs to Pliomeridae'
'Cybelurus belongs to Encrinuridae'
'Cyclagnostus is a subjective synonym of Acmarhachis'
'Cyclognathina belongs to Olenidae'
'Cyclolorenzella is a subjective synonym of Fenghuangella'
'Cyclolorenzellina is a subjective synonym of Fenghuangella'
'Cyclolorenzellina is a subjective synonym of Fenghuangella' according to Peng 1987
'Cyclolorenzellina [misspelled as Cyclolenzellina] belongs to Trilobita' according to Sepkoski 2002
'Cyclolorenzellina coniformis is recombined as Fenghuangella coniformis' according to Peng 1987
'Cyclopagnostus is a subjective synonym of Hypagnostus'
'Cyclopyge belongs to Cyclopygidae'
'Cyclopyge pachycephala belongs to Cyclopyge' according to Hawle and Corda 1847
'Cyclopyge pachycephala is recombined as Heterocyclopyge pachycephala' according to Marek 1961
'Cyclopygidae belongs to Asaphida'
'Cydonocephalus is a subjective synonym of Kawina'
'Cylindraspis belongs to Testudinidae'
'Cylindraspis is a subjective synonym of Archegonus'
'Cylindrasppis is a misspelling of Cylindraspis'
'Cyphaspides belongs to Aulacopleuridae'
'Cyphaspis belongs to Aulacopleuridae'
'Cyphinioides belongs to Proetidae'
'Cyphinium is a subjective synonym of Ditomopyge'
'Cypholichas is a subjective synonym of Conolichas'
'Cyphoproetus belongs to Proetidae'
'Cyranolichas is a subjective synonym of Hoplolichas'
'Cyrtometopus belongs to Cheiruridae'
'Cyrtoproetus belongs to Proetidae'
'Cyrtoprora belongs to Damesellidae'
'Cyrtosymbole belongs to Proetidae'
'Cyrtosymbole (Cyrtodechenella) was reranked as Cyrtodechenella and belongs to Proetidae'
'Cyrtosymbole (Franconicabole) was reranked as Franconicabole and belongs to Proetidae'
'Cyrtosymbole (Macrobole) drewerensis is recombined as Macrobole drewerensis'
'Cyrtosymbole (Pusillabole) was reranked as Pusillabole and belongs to Proetidae'
'Cyrtosymboloides belongs to Tropidocoryphidae'
'Dactylocephalus belongs to Hungaiidae'
'Daihuaia belongs to Proetidae'
'Dainellicauda is a subjective synonym of Asaphopsoides'
'Dalejeproetus belongs to Tropidocoryphidae'
'Dalmania is replaced by Dalmanites' according to Barrande 1852
'Dalmania dubia belongs to Dalmania' according to Barrande 1852
'Dalmania dubia is recombined as Eudolatites (Destombesites) dubia' according to Snadjr 1987
'Dalmanites belongs to Dalmanitidae'
'Dalmanites (Synphoria) was reranked as Synphoria and belongs to Dalmanitidae'
'Dalmanites oriens belongs to Dalmanites' according to Barrande 1852
'Dalmanites oriens mytoensis is recombined as Zeliszkella (Mytocephala) mytoensis' according to Struve 1958
'Dalmanites oriens mytoensis belongs to Dalmanites oriens' according to Kloucek 1916
'Dalmanites reussi is recombined as Reussia reussi' according to Maksimova 1972
'Dalmanites reussi is recombined as Reussiana reussi' according to Snajdr 1987
'Dalmanites reussi belongs to Dalmanites' according to Barrande 1846
'Dalmanitina belongs to Dalmanitidae'
'Dalmanitina (Eodalmanitina) was reranked as Eodalmanitina and belongs to Dalmanitidae'
'Dalmaniturus belongs to Dalmanitidae'
'Damesella belongs to Damesellidae'
'Damiaoaspis belongs to Lorenzellidae'
'Danangouia is a subjective synonym of Parabadiella'
'Dananzhuangaspis belongs to Proasaphiscidae'
'Danzhaiaspis belongs to Alokistocaridae'
'Dartonaspis belongs to Elviniidae'
'Dasometopus belongs to Holocephalinidae'
'Dayongia belongs to Encrinuridae'
'Daytonia belongs to Dalmanitidae'
'Deacybele belongs to Encrinuridae'
'Deadwoodia is a subjective synonym of Wuhuia'
'Deanaspis belongs to Trinucleidae'
'Deanokephalus belongs to Remopleurididae'
'Dechenella belongs to Proetidae'
'Dechenella (Dechenella) tesca is recombined as Ormistonia tesca' according to Maksimova 1978
'Dechenella (Monodechenella) was reranked as Monodechenella and belongs to Proetidae'
'Dechenella (Pedinodechenella) was reranked as Pedinodechenella and belongs to Proetidae'
'Dechenella martenbergensis is recombined as Clavibole martenbergensis' according to Hahn et al. 1982
'Dechenellurus ursus belongs to Dechenellurus' according to Maksimova 1960
'Deckera belongs to Dokimocephalidae'
'Declivolithus is a subjective synonym of Bohemoharpes'
'Decordinaspis belongs to Trinucleidae'
'Decoroproetus belongs to Tropidocoryphidae'
'Decoroscutellum belongs to Styginidae'
'Decus belongs to Acrocephalitidae'
'Degamella belongs to Cyclopygidae'
'Deiphon belongs to Cheiruridae'
'Deiracephalus belongs to Llanoaspididae'
'Deiradonyx belongs to Dolichometopidae'
'Deissella is a subjective synonym of Bolaspidella'
'Dekalymene belongs to Calymenidae'
'Delagnostus belongs to Agnostina'
'Delaria belongs to Proetidae'
'Delgadoa belongs to Styginidae'
'Delgadodiscus is a subjective synonym of Delgadella'
'Delgadoia is a subjective synonym of Delgadella'
'Dellea belongs to Dokimocephalidae'
'Dellea punctata belongs to Dellea'
'Delleana belongs to Dokimocephalidae'
'Delocare belongs to Acastidae'
'Deloops belongs to Acastidae'
'Delops belongs to Dalmanitidae'
'Deltacare belongs to Trilobita'
'Deltacephalaspis belongs to Calmoniidae'
'Deltadechenella belongs to Proetidae'
'Deltadiscus is a subjective synonym of Eodiscus'
'Deltina belongs to Ptychopariidae'
'Demeterops belongs to Pilekiidae'
'Denaspis belongs to Solenopleuridae'
'Denckmannites belongs to Phacopidae'
'Denemarkia belongs to Tropidocoryphidae'
'Densonella is a subjective synonym of Menomonia'
'Dentaloscutellum belongs to Styginidae'
'Dereimsia is a subjective synonym of Bouleia'
'Derikaspis belongs to Proasaphiscidae'
'Despujolsia belongs to Saukiandidae'
'Destombesites belongs to Dalmanitidae'
'Destombesites was reranked as Eudolatites (Destombesites) and belongs to Eudolatites' according to Snadjr 1987
'Deucalion is a nomen dubium'
'Devonocoryphe is a nomen nudum'
'Devonodontochile is a subjective synonym of Zlichovaspis'
'Diacoryphe belongs to Proetidae'
'Diademaproetus belongs to Tropidocoryphidae'
'Dianops belongs to Phacopidae'
'Diaphanometopidae belongs to Phacopida'
'Diaphanometopus belongs to Diaphanometopidae'
'Diatemnus is a subjective synonym of Bienvillia'
'Dicanthopyge belongs to Aphelaspididae'
'Dicellocephalus finalis is recombined as Diplapatokephalus finalis'
'Diceratocephalina belongs to Acrocephalitidae'
'Diceratocephalus belongs to Diceratocephalidae'
'Diceratocephalus armatus belongs to Diceratocephalus' according to Lu 1954
'Diceratopyge belongs to Ceratopygidae'
'Dicerodiscus belongs to Hebediscidae'
'Dichagnostus is an objective synonym of Pleuroctenium'
'Dichelepyge belongs to Ceratopygidae'
'Dicranogmus belongs to Lichidae'
'Dicranopeltis belongs to Lichidae'
'Dicranopeltoides is a subjective synonym of Dicranopeltis'
'Dicranurus belongs to Odontopleuridae'
'Dictyites is a subjective synonym of Tsinania'
'Didrepanon belongs to Cheiruridae'
'Didwudina belongs to Dokimocephalidae'
'Dienstina belongs to Phacopidae'
'Dignagnostus belongs to Agnostina'
'Digonus belongs to Homalonotidae'
'Digrypos belongs to Dionididae'
'Dikelocephaliidae is corrected as Dikelocephalidae and belongs to Asaphida'
'Dikelocephalopsis belongs to Hungaiidae'
'Dikelocephalus belongs to Dikelocephalidae'
'Dikelokephalina belongs to Hungaiidae'
'Dilatalimbus belongs to Anomocaridae'
'Dilataspis belongs to Dinesidae'
'Dimastocephalus is a subjective synonym of Carolinites'
'Dimeropyge belongs to Dimeropygidae'
'Dimeropygiella belongs to Dimeropygidae'
'Dindymene belongs to Encrinuridae'
'Dindymenella is a subjective synonym of Oedicybele'
'Dinesus belongs to Dinesidae'
'Dionide belongs to Dionididae'
'Dionide miaopoensis belongs to Dionide' according to Lu 1975
'Dionidella belongs to Dionididae'
'Dionidepyga is a subjective synonym of Dionide'
'Dionididae belongs to Asaphida'
'Dipentaspis belongs to Damesellidae'
'Dipharus is a subjective synonym of Hebediscus'
'Diplagnostus belongs to Diplagnostidae'
'Diplapatokephalus belongs to Remopleurididae'
'Dipleura belongs to Homalonotidae'
'Dipleuropyge belongs to Ceratopygidae'
'Diplolichas is a subjective synonym of Radiolichas'
'Dipyrgotes belongs to Damesellidae'
'Dipyrogotes belongs to Damesellidae'
'Discomesites is a subjective synonym of Pagetides'
'Discomesites fragum is recombined as Pagetides fragum'
'Distazeris belongs to Catillicephalidae'
'Paradistazeris is a subjective synonym of Agelagma'
'Distyrax belongs to Encrinuridae'
'Ditomopyge belongs to Proetidae'
'Dividuagnostus belongs to Metagnostidae'
'Dixiphopyge belongs to Aulacopleuridae'
'Dohmiella is a subjective synonym of Gerastos'
'Dokimocephalidae belongs to Ptychopariida'
'Dokimocephalus belongs to Dokimocephalidae'
'Dolerasaphus is a subjective synonym of Paramegalaspis'
'Dolerobasilicus is a subjective synonym of Basilicus'
'Dolerolichia belongs to Saukiandidae'
'Dolgaia is a subjective synonym of Kaninia'
'Dolgeuloma belongs to Eulomidae'
'Dolichagnostus is corrected as Dolichoagnostus and belongs to Diplagnostidae'
'Dolichoharpes belongs to Harpetidae'
'Dolichometopsis belongs to Dolichometopidae'
'Dolichometopus belongs to Dolichometopidae'
'Dolichometopus (Housia) was reranked as Housia and belongs to Pterocephaliidae'
'Doremataspis belongs to Liostracinidae'
'Dorypygina belongs to Dorypygidae'
'Douposiella belongs to Ptychopariidae'
'Drabia belongs to Phylacteridae'
'Drepanopyge belongs to Yinitidae'
'Drepanura belongs to Damesellidae'
'Drepanuroides belongs to Yinitidae'
'Paradrepanuroides is a subjective synonym of Qingkouia' according to W. Zhang et al. 1997
'Dresbachia belongs to Menomoniidae'
'Drevermannia belongs to Proetidae'
'Drevermannia (Palpebralia) herrmanni belongs to Drevermannia (Palpebralia)' according to Richter and Richter 1943
'Drevermannia (Palpebralia) palpebralis is recombined as Palpebralia palpebralis'
'Drevermannia (Prodrevermannia) was reranked as Prodrevermannia and belongs to Tropidocoryphidae'
'Dreyfussina belongs to Dalmanitidae'
'Drotops belongs to Phacopidae'
'Drumaspis belongs to Elviniidae'
'Dubhglasina belongs to Harpetidae'
'Ductina belongs to Phacopidae'
'Dudleyaspis belongs to Odontopleuridae'
'Dudu belongs to Proetidae'
'Duftonia belongs to Dalmanitidae'
'Duibianaspis belongs to Idahoiidae'
'Dulanaspis belongs to Styginidae'
'Dunderbergella belongs to Asaphiscidae'
'Dunderbergia belongs to Elviniidae'
'Durinia belongs to Lonchocephalidae'
'Duyunaspis belongs to Oryctocephalidae'
'Dysplanus belongs to Illaenidae'
'Dytremacephalus belongs to Elviniidae'
'Dytremacephalus asperaxis belongs to Dytremacephalus'
'Ebenzeria is an objective synonym of Elliptocephala'
'Eccaparadoxides is a subjective synonym of Phanoptes'
'Eccoptochile belongs to Cheiruridae'
'Echinophacops belongs to Phacopidae'
'Echinopyge belongs to Acastidae'
'Ectenaspis belongs to Asaphidae'
'Ectenonotus belongs to Pliomeridae'
'Ectillaenus belongs to Illaenidae'
'Edelsteinaspis belongs to Edelsteinaspididae'
'Edgellia is an objective synonym of Trinucleus'
'Edithiella belongs to Asaphiscidae'
'Ehmania belongs to Alokistocaridae'
'Ehmaniella belongs to Alokistocaridae'
'Eirelithus belongs to Trinucleidae'
'Ejinaspis belongs to Solenopleuridae'
'Ekwanoscutellum belongs to Styginidae'
'Elandaspis belongs to Anomocaridae'
'Elankaspis is a subjective synonym of Pseudokainella'
'Elatius is a subjective synonym of Kingaspidoides'
'Elbaspis is a subjective synonym of Miraspis'
'Elburgia belongs to Elviniidae'
'Eldoradia belongs to Bolaspididae'
'Eldredgeops belongs to Phacopidae'
'Elegantaspis belongs to Aphelaspididae'
'Elegestina belongs to Chengkouaspididae'
'Eleutherocentrus belongs to Bathyuridae'
'Elganellus belongs to Redlichiidae'
'Elicicola belongs to Yunnanocephalidae'
'Elimaproetus belongs to Proetidae'
'Elkanaspis is a subjective synonym of Pseudokainella'
'Elkia belongs to Dikelocephalidae'
'Ellipsocephalidae belongs to Ptychopariida'
'Ellipsocephaloides belongs to Ellipsocephaloididae'
'Ellipsocephaloididae belongs to Ptychopariida'
'Ellipsocephalus belongs to Ellipsocephalidae'
'Ellipsostrenua belongs to Ellipsocephalidae'
'Ellipsotaphrus belongs to Cyclopygidae'
'Ellipsuella is a nomen nudum'
'Elliptocephala belongs to Holmiidae'
'Elliptophillipsia belongs to Proetidae'
'Ellsaspis belongs to Raphiophoridae'
'Elongatanileus belongs to Nileidae'
'Elrathiella belongs to Alokistocaridae'
'Elrathina is a subjective synonym of Ptychoparella'
'Elvinaspis belongs to Elviniidae'
'Elvinaspis explicatus belongs to Elvinaspis' according to Ergaliev 2001
'Elvinia belongs to Elviniidae'
'Elviniella belongs to Elviniidae'
'Elviniidae belongs to Ptychopariida'
'Elvinoides belongs to Elviniidae'
'Elviraspis belongs to Elviniidae'
'Elyaspis belongs to Elviniidae'
'Elyx belongs to Conocoryphidae'
'Emanuelaspis belongs to Asaphidae'
'Emeidiscus is a subjective synonym of Tsunyidiscus'
'Emmrichella is a subjective synonym of Lioparia' according to Zhang 1985
'Emmrichops belongs to Cyclopygidae'
'Emsurella belongs to Cheilocephalidae'
'Emsurina belongs to Pilekiidae'
'Enammocephalus belongs to Palaeolenidae'
'Enantiaspis belongs to Metadoxididae'
'Encrinuraspis is a subjective synonym of Cromus'
'Encrinuraspis optimus is recombined as Cromus optimus' according to Struve 1980
'Encrinurella belongs to Pliomeridae'
'Encrinuroides belongs to Encrinuridae'
'Encrinuroides uncatus is recombined as Prophysemataspis uncatus'
'Encrinurus belongs to Encrinuridae'
'Endoaspis is a subjective synonym of Annamitella'
'Endymionia belongs to Raphiophoridae'
'Entomaspis belongs to Harpetidae'
'Entomostracites is a subjective synonym of Paradoxides'
'Entomostracites expansus is recombined as Asaphus expansus'
'Entomostracites extenuatus is recombined as Megistaspidella extenuatus'
'Entomostracites laciniatus is recombined as Lichas laciniatus'
'Entomostracites paradoxissimus is recombined as Paradoxides paradoxissimus'
'Entomostracites pisiformis is recombined as Agnostus pisiformis'
'Entsyna belongs to Ptychopariidae'
'Eoacidaspis belongs to Lichakephalidae'
'Eoanomocarella belongs to Anomocarellidae'
'Eoapatokephalus belongs to Remopleurididae'
'Eoasaphus belongs to Asaphidae'
'Eobronteus belongs to Styginidae'
'Eocatuniella belongs to Anomocaridae'
'Eocheirurus belongs to Trilobita'
'Eochuangia belongs to Leiostegiidae'
'Eocorycephalus is an objective synonym of Synphoria'
'Eocorynexochus belongs to Corynexochidae'
'Eocryphops belongs to Phacopidae'
'Eocyphinium belongs to Proetidae'
'Eocyrtosymbole belongs to Proetidae'
'Eocyrtosymbole magnifica belongs to Eocyrtosymbole' according to Pillet 1973
'Eodindymene belongs to Encrinuridae'
'Eodiscus tingi is recombined as Tsunyidiscus tingi' according to Zhang and Jell 1987
'Eodontopleura belongs to Amgaspididae'
'Eodrevermannia belongs to Proetidae'
'Eodrevermannia (Erbenaspis) was reranked as Erbenaspis and belongs to Proetidae'
'Eodrevermannia kettneri belongs to Eodrevermannia' according to Chlupáč 1965
'Eodrevermannia kettneri is recombined as Moravocoryphe kettneri' according to Pribyl and Vanĕk 1978
'Eoharpes belongs to Harpetidae'
'Eohomalonotus belongs to Homalonotidae'
'Eoisotelus belongs to Asaphidae'
'Eokochaspis belongs to Ptychopariidae'
'Eokosovopeltis belongs to Styginidae'
'Eoleonaspis belongs to Odontopleuridae'
'Eomalungia belongs to Estaingiidae'
'Eomonorachus belongs to Pterygometopidae'
'Eopalpebralia belongs to Drevermanniinae' according to Alberti 2000
'Eophacops belongs to Phacopidae'
'Eoproetus belongs to Asaphiscidae'
'Eoptychaspis belongs to Ptychaspididae'
'Eoptychoparia is a subjective synonym of Ptychoparella'
'Eorobergia belongs to Remopleurididae'
'Eosaukia belongs to Saukiidae'
'Eoscutellum belongs to Styginidae'
'Eoshengia belongs to Lisaniidae'
'Eosoptychoparia is a subjective synonym of Zhenganites'
'Eosoptychopyge is a subjective synonym of Zhenganites'
'Eospencia belongs to Ptychopariidae'
'Eotrinucleus belongs to Harpetidae'
'Eowuhuia belongs to Ptychaspididae'
'Erbenia belongs to Asaphiscidae'
'Erbenicoryphe belongs to Tropidocoryphidae'
'Erbenites belongs to Proetidae'
'Erbia belongs to Dinesidae'
'Erbiella belongs to Dinesidae'
'Erbina belongs to Dinesidae'
'Erbiopsidella belongs to Dinesidae'
'Erbiopsis belongs to Dinesidae'
'Erdoradites belongs to Alokistocaridae'
'Eremiproetus belongs to Tropidocoryphidae'
'Erixanium belongs to Aphelaspididae'
'Ermanella belongs to Bathyuridae'
'Erratencrinurus belongs to Encrinuridae'
'Erzishania belongs to Antagmidae'
'Eshelmania is a subjective synonym of Dellea'
'Esmeraldina is a subjective synonym of Holmia'
'Esseigania belongs to Tsinaniidae'
'Estaingia belongs to Estaingiidae'
'Estaingiidae belongs to Ptychopariida'
'Estoniops belongs to Pterygometopidae'
'Eteraspis belongs to Asaphiscidae'
'Etheridgaspis belongs to Hystricuridae'
'Eucalymene is a subjective synonym of Pseudocalymene'
'Eudechenella is an objective synonym of Dechenella'
'Eudolatites belongs to Dalmanitidae'
'Eudolatites (Banilatites) belongs to Eudolatites' according to Destombes 1972
'Eudolatites (Deloites) was reranked as Deloites and belongs to Dalmanitidae'
'Eugonocare belongs to Aphelaspididae'
'Euloma belongs to Eulomidae'
'Euloma (Plecteuloma) was reranked as Plecteuloma and belongs to Eulomidae'
'Eulomella belongs to Trilobita'
'Eulomidae belongs to Ptychopariida'
'Eulomina belongs to Bathycheilidae'
'Euonchonotina belongs to Olenidae'
'Euptychaspis belongs to Ptychaspididae'
'Eurekia belongs to Eurekiidae'
'Eurodeois is a subjective synonym of Amphoton'
'Eurostina belongs to Ptychopariidae'
'Eurudagnostus is a subjective synonym of Oncagnostus'
'Eurycare belongs to Olenidae'
'Eutrimerocephalus is an objective synonym of Trimerocephalus'
'Evagena belongs to Proetidae'
'Evropeites belongs to Pliomeridae'
'Exallaspis belongs to Odontopleuridae'
'Exastipyx belongs to Styginidae'
'Exigua belongs to Plethopeltidae'
'Eymekops belongs to Proasaphiscidae'
'Ezhimia belongs to Saukiandidae'
'Ezhuangia belongs to Dolichometopidae'
'Fabulaspis belongs to Trilobita'
'Faciura belongs to Trilobita'
'Failleana belongs to Styginidae'
'Falanaspis belongs to Alsataspididae'
'Falcatoproetus is a subjective synonym of Proetus'
'Fallagnostus is a subjective synonym of Condylopyge'
'Famatinolithus belongs to Trinucleidae'
'Fandianaspis belongs to Redlichiina'
'Fatocephalus is a subjective synonym of Pseudokainella'
'Feilongshania belongs to Oryctocephalidae'
'Fenestraspis belongs to Dalmanitidae'
'Fenghuangella belongs to Diceratocephalidae'
'Ferenepea belongs to Nepeidae'
'Ferralsia belongs to Palaeolenidae'
'Feruminops belongs to Acastidae'
'Fieldaspis belongs to Zacanthoididae'
'Fimbriomarrolithus is an objective synonym of Telaeomarrolithus'
'Fissanomocarella belongs to Anomocarellidae'
'Fissocephalus belongs to Harpetidae'
'Flabellocephalus belongs to Pterocephaliidae'
'Flexicalymene belongs to Calymenidae'
'Flexicalymene (Onnicalymene) was reranked as Onnicalymene and belongs to Calymenidae'
'Folliceps belongs to Nepeidae'
'Forchhammeria belongs to Anomocaridae'
'Fordaspis belongs to Dorypygidae'
'Forillonaria belongs to Dalmanitidae'
'Formonia belongs to Proetidae'
'Formosagnostus is a subjective synonym of Hadragnostus'
'Formosocephalus belongs to Anomocaridae'
'Forteyops belongs to Cheiruridae'
'Foulonia belongs to Cheiruridae'
'Fragiscutum belongs to Encrinuridae'
'Frammia belongs to Encrinuridae'
'Francovichia belongs to Dalmanitidae'
'Fremontia belongs to Olenellidae'
'Frencrinuroides belongs to Encrinuridae'
'Frithjofia belongs to Proetidae'
'Fritzolenellus belongs to Olenellidae'
'Frognaspis belongs to Ityophoridae'
'Fuchouia belongs to Dolichometopidae'
'Parafuchouia is a subjective synonym of Amphoton'
'Fuminaspis belongs to Metadoxididae'
'Fuquania belongs to Anomocaridae'
'Furacopyge belongs to Dalmanitidae'
'Furcalithus belongs to Trinucleidae'
'Fuscinipyge belongs to Proetidae'
'Fuyunia belongs to Asaphidae'
'Gabriceraurus belongs to Cheiruridae'
'Gabriellus belongs to Olenellidae'
'Galeaspis belongs to Catillicephalidae'
'Galerosaukia belongs to Saukiidae'
'Gamonedaspis belongs to Dalmanitidae'
'Ganinella belongs to Proetidae'
'Ganovexopyge belongs to Alokistocaridae'
'Gaoloupingia belongs to Shumardiidae'
'Gaotanaspis belongs to Ptychopariidae'
'Gaotania belongs to Odontopleuridae'
'Gapeevella belongs to Proetidae'
'Gaphuraspis belongs to Ptychopariidae'
'Gastropolus belongs to Cyclopygidae'
'Geesops belongs to Phacopidae'
'Gelasene belongs to Edelsteinaspididae'
'Genevievella belongs to Llanoaspididae'
'Gentilapsis is a nomen nudum'
'Georgiellus is an objective synonym of Elliptocephala'
'Georhithronella belongs to Proetidae'
'Geraldinella belongs to Archaeaspididae'
'Gerasaphes belongs to Asaphidae'
'Devonoproetus is a subjective synonym of Proetus'
'Gerastos (Oehlertaspis) was reranked as Oehlertaspis and belongs to Proetidae'
'Gerastos (Oehlertaspis) belongs to Gerastos' according to Pillet and Vanek 1973
'Germaropyge is a subjective synonym of Ellipsocephalus'
'Gibbocephalus is an objective synonym of Crotalocephalina'
'Gigantopygus belongs to Gigantopygidae'
'Gignopeltis belongs to Bathyuridae'
'Gigoutella belongs to Palaeolenidae'
'Giordanella belongs to Dolerolenidae'
'Girandia belongs to Pagodiidae'
'Girvanagnostus is a subjective synonym of Arthrorhachis'
'Girvanopyge belongs to Cyclopygidae'
'Gitarra belongs to Proetidae'
'Glaberagnostus belongs to Agnostina'
'Glabrella belongs to Ellipsocephalidae'
'Glabretina belongs to Hystricuridae'
'Glaphurina belongs to Raymondinidae'
'Glaphurus belongs to Raymondinidae'
'Glaphyraspis belongs to Lonchocephalidae'
'Globampyx belongs to Raphiophoridae'
'Globulaspis belongs to Odontopleuridae'
'Globusia belongs to Proetidae'
'Glockeria is an objective synonym of Phacopidella'
'Gloria is replaced by Gloriagloria'
'Gloriagloria belongs to Proasaphiscidae'
'Glossopleura belongs to Dolichometopidae'
'Glyphanellus belongs to Anomocaridae'
'Glyphaspellus belongs to Anomocaridae'
'Glyphaspis belongs to Anomocarellidae'
'Glyphopeltis belongs to Marjumiidae'
'Glyptagnostidae belongs to Agnostida'
'Glyptagnostus belongs to Glyptagnostidae'
'Glyptambon belongs to Dalmanitidae'
'Glyptometopsis belongs to Dokimocephalidae'
'Glyptometopus belongs to Dokimocephalidae'
'Gog belongs to Asaphidae'
'Gogiura belongs to Asaphidae'
'Gogoella belongs to Pliomeridae'
'Goldfieldia is a subjective synonym of Lancastria'
'Goldfussia is an objective synonym of Scutellum'
'Goldfussia is replaced by Goldfussius' according to Barrande 1852
'Goldfussius is an objective synonym of Goldfussia'
'Goldillaenoides belongs to Styginidae'
'Goldillaenus belongs to Styginidae'
'Goldius is a subjective synonym of Scutellum'
'Gondwanaspis is a subjective synonym of Taemasaspis'
'Gondwanaspis mrirtensis is recombined as Taemasaspis mrirtensis'
'Goniophrys belongs to Telephinidae'
'Goniopleura is a nomen oblitum'
'Goniotelina belongs to Bathyuridae'
'Gonioteloides belongs to Redlichiina'
'Goniotelus belongs to Bathyuridae'
'Goodsiraspis is a subjective synonym of Malimanaspis'
'Gourdonia belongs to Acastidae'
'Goycoia belongs to Trilobita'
'Gracemerea belongs to Proetidae'
'Graciella belongs to Lonchocephalidae'
'Grandagnostus belongs to Agnostina'
'Grandioculus belongs to Proasaphiscidae'
'Granolenus belongs to Dolerolenidae'
'Granolenus midi belongs to Granolenus' according to Jago 1980
'Granularaspis [misspelled as Granularapis] belongs to Corynexochida' according to Sepkoski 2002
'Granularaspis belongs to Dolichometopidae'
'Granularia is replaced by Granularaspis'
'Granuloagnostus belongs to Metagnostidae'
'Gravicalymene belongs to Calymenidae'
'Griffithidella belongs to Proetidae'
'Griffithides belongs to Proetidae'
'Griffithides (Particeps) was reranked as Particeps and belongs to Proetidae'
'Grinnellaspis belongs to Bathyuridae'
'Griphasaphus belongs to Asaphidae'
'Groenwallia belongs to Andrarinidae'
'Groenwallina belongs to Andrarinidae'
'Guandacolithus belongs to Trinucleidae'
'Guangyuanaspis belongs to Abadiellidae'
'Guankouia belongs to Proasaphiscidae'
'Guichenia belongs to Dalmanitidae'
'Guizhouanomocare belongs to Anomocaridae'
'Guizhoudiscus is a subjective synonym of Tsunyidiscus' according to Zhang and Jell 1987
'Guizhoupliomerops belongs to Pliomeridae'
'Gunnia belongs to Ptychopariidae'
'Gymnagnostus belongs to Agnostidae'
'Gymnostomix belongs to Trinucleidae'
'Gyroma is a subjective synonym of Agniesella'
'Gyrometopus belongs to Diaphanometopidae'
'Haasia belongs to Proetidae'
'Habrocephalus belongs to Palaeolenidae'
'Hadragnostus belongs to Ammagnostidae'
'Hadrocephalites belongs to Ptychopariidae'
'Hadromeros belongs to Cheiruridae'
'Hadrorachus belongs to Calmoniidae'
'Hadrorachus is replaced by Hadrorakos' according to Del 1940
'Hadrorakos is an objective synonym of Hadrorachus'
'Haibowania is a subjective synonym of Damesella'
'Hallaspis is a subjective synonym of Pemphigaspis'
'Hamashania belongs to Saukiidae'
'Hamatolenus belongs to Ellipsocephalidae'
'Hamiroproetus belongs to Proetidae'
'Hammannopyge belongs to Cheiruridae'
'Hammatocnemis is a subjective synonym of Ovalocephalus'
'Hanburia belongs to Dolichometopidae'
'Hanchungolithus belongs to Trinucleidae'
'Hancrania belongs to Olenidae'
'Hancrania brevilimbata belongs to Hancrania' according to Kobayashi 1962
'Hanivella belongs to Anomocaridae'
'Haniwa belongs to Remopleurididae'
'Haniwoides belongs to Ceratopygidae'
'Hanjiangaspis belongs to Rorringtoniidae'
'Hanshania belongs to Anomocarellidae'
'Hanzhongaspis belongs to Isocolidae'
'Hapalopleura belongs to Alsataspididae'
'Haploconus is replaced by Dimeropyge' according to Opik 1937
'Hapsiceraurus belongs to Cheiruridae'
'Hapsidocare belongs to Kaolishaniidae'
'Harataspis belongs to Anomocaridae'
'Hardyia belongs to Missisquoiidae'
'Hardyoides belongs to Norwoodiidae'
'Harpidella belongs to Aulacopleuridae'
'Harpides belongs to Harpididae'
'Harpididae belongs to Harpetida'
'Harpidoides belongs to Harpididae'
'Harpillaenus belongs to Illaenidae'
'Harringtonacaste belongs to Acastidae'
'Harrisia is replaced by Clelandia' according to Cossmann 1902
'Harrisia parabola is recombined as Clelandia parabola'
'Harrisia parabola is recombined as Clelandia parabola' according to Cossmann 1902
'Hartella belongs to Conocoryphidae'
'Hartshillia belongs to Corynexochidae'
'Hartshillina belongs to Corynexochidae'
'Hassiabole belongs to Proetidae'
'Hastagnostus belongs to Agnostina'
'Hatangia belongs to Proasaphiscidae'
'Hausmannia is an objective synonym of Odontochile'
'Hausmannia is an objective synonym of Odontochile'
'Hausmannia is a subjective synonym of Dalmanites'
'Hawkinsaspis belongs to Lonchocephalidae'
'Hawkinsia is replaced by Hawkinsaspis'
'Hebediscina belongs to Yukoniidae'
'Hebediscus is a subjective synonym of Dipharus'
'Hebediscus orientalis is recombined as Hupeidiscus orientalis'
'Hedinaspis belongs to Ceratopygidae'
'Hedstroemia belongs to Proetidae'
'Helepagetia belongs to Eodiscidae'
'Helieranella belongs to Olenidae'
'Heliocephalus is a subjective synonym of Dalmanites'
'Helioharpes is a subjective synonym of Harpes'
'Heliomera belongs to Cheiruridae'
'Heliomeroides belongs to Cheiruridae'
'Helioproetoides is a nomen nudum'
'Helioproetus belongs to Proetidae'
'Heliopyge belongs to Acastidae'
'Helokybe belongs to Proetidae'
'Hemiarges belongs to Lichidae'
'Hemibarrandia belongs to Panderiidae'
'Hemigyraspis is a subjective synonym of Asaphellus'
'Hemikaolishania belongs to Kaolishaniidae'
'Hemirhodon belongs to Dolichometopidae'
'Hemisphaerocoryphe is a subjective synonym of Sphaerocoryphe'
'Henadoparia belongs to Cedariidae'
'Heptabronteus is a subjective synonym of Kosovopeltis'
'Hercantyx belongs to Damesellidae'
'Hermosella is a subjective synonym of Jegorovaia'
'Herse belongs to Solenopleuridae'
'Hesslerides belongs to Proetidae'
'Heterocaryon belongs to Harpetidae'
'Heterocyclopyge is a subjective synonym of Selenoptychus'
'Hexacopyge belongs to Remopleurididae'
'Hexacosta belongs to Acastidae'
'Hexianella is a subjective synonym of Brackebuschia'
'Heyelingella is a subjective synonym of Iranoleesia'
'Hibbertia belongs to Harpetidae'
'Hicksia belongs to Dorypygidae'
'Hidascutellum belongs to Styginidae'
'Highgatella belongs to Olenidae'
'Hillyardina belongs to Hystricuridae'
'Hindermeyeria is a subjective synonym of Strenuaeva'
'Hintzeia belongs to Pliomeridae'
'Hispaniaspis belongs to Odontopleuridae'
'Histiomona belongs to Damesellidae'
'Hoekaspis belongs to Asaphidae'
'Holasaphus belongs to Ptychopariidae'
'Holcacephalus belongs to Norwoodiidae'
'Holdenia belongs to Isocolidae'
'Holia belongs to Cheiruridae'
'Hollardia belongs to Tropidocoryphidae'
'Hollardops belongs to Acastidae'
'Holmdalia belongs to Marjumiidae'
'Holmia rowei is recombined as Esmeraldina rowei'
'Holocephalina belongs to Holocephalinidae'
'Holocephalinidae belongs to Ptychopariida'
'Holocephalites belongs to Holocephalinidae'
'Holometopus is replaced by Warburgella'
'Holotrachelus belongs to Holotrachelidae'
'Holoubkocheilus belongs to Bavarillidae'
'Holubaspis belongs to Hystricuridae'
'Holyoakia belongs to Emuellidae'
'Homagnostus belongs to Agnostidae'
'Homalonotidae belongs to Phacopida'
'Homalonotus belongs to Homalonotidae'
'Homalopteon belongs to Nileidae'
'Homalopyge belongs to Asaphidae'
'Homotelus is a subjective synonym of Isotelus'
'Honania is a subjective synonym of Grandioculus'
'Hongjunshaoia belongs to Yinitidae'
'Hongshiyanaspis belongs to Metadoxididae'
'Hopolichoides belongs to Lichidae'
'Hospes belongs to Trilobita'
'Houmengia belongs to Antagmidae'
'Howellaspis belongs to Menomoniidae'
'Hsuaspis is a subjective synonym of Estaingia'
'Huaibeia belongs to Proasaphiscidae'
'Huainania belongs to Inouyiidae'
'Huayuania belongs to Anomocarellidae'
'Huemacaspis belongs to Homalonotidae'
'Hukasawaia belongs to Remopleurididae'
'Humeia belongs to Proetidae'
'Humilogriffithides belongs to Proetidae'
'Hunanaspis belongs to Anomocaridae'
'Hunanocephalus [misspelled as Hunnanocephalus] belongs to Corynexochida' according to Sepkoski 2002
'Hunanocephalus belongs to Oryctocephalidae'
'Hunanoproetus belongs to Proetidae'
'Hunanopyge belongs to Ceratopygidae'
'Hundwarella belongs to Proasaphiscidae'
'Hungaia belongs to Hungaiidae'
'Hungaiidae belongs to Asaphida'
'Hungioides belongs to Hungaiidae'
'Hunnebergia belongs to Asaphidae'
'Huntonia is replaced by Huntoniatonia'
'Huntoniatonia belongs to Dalmanitidae'
'Hupeia belongs to Estaingiidae'
'Hupeidiscus is a subjective synonym of Tsunyidiscus'
'Hupeolenus belongs to Ellipsocephalidae'
'Huzhuia belongs to Solenopleuridae'
'Hyboaspis belongs to Illaenidae'
'Hybocephalus belongs to Trilobita'
'Hydrolaenus is a subjective synonym of Thaleops'
'Hypagnostus belongs to Peronopsidae'
'Hypaproetus belongs to Proetidae'
'Hyperagnostus is a subjective synonym of Pseudorhaptagnostus'
'Hyperbolochilus belongs to Hystricuridae'
'Hypermecaspis belongs to Olenidae'
'Hyperoparia belongs to Solenopleuridae'
'Hypodicranotus belongs to Remopleurididae'
'Hypothetica is a subjective synonym of Entomaspis'
'Hyrokybe belongs to Cheiruridae'
'Hysterolenus belongs to Ceratopygidae'
'Hysteropleura belongs to Menomoniidae'
'Hystricuridae belongs to Proetida'
'Hystricurus belongs to Hystricuridae'
'Iberocoryphe belongs to Homalonotidae'
'Ibexaspis belongs to Pliomeridae'
'Ichangia belongs to Estaingiidae'
'Ichangia ichangensis belongs to Ichangia' according to Chang 1965
'Ichangolithus is a subjective synonym of Hanchungolithus'
'Ichiyamella is a subjective synonym of Parayoungia'
'Ichiyamella subglobula is recombined as Parayoungia subglobula'
'Idahoia is a subjective synonym of Saratogia'
'Idahoiidae belongs to Asaphida'
'Iddingsia belongs to Dokimocephalidae'
'Idiomesus belongs to Ptychaspididae'
'Idiorapha belongs to Trilobita'
'Idolagnostus belongs to Agnostidae'
'Igarkiella belongs to Anomocaridae'
'Iglesiella belongs to Redlichiidae'
'Ignoproetus belongs to Tropidocoryphidae'
'Ignotogregatus belongs to Ignotogregatidae'
'Ijacephalus belongs to Acrocephalitidae'
'Illaenoides belongs to Styginidae'
'Illaenopsis belongs to Nileidae'
'Illaenula belongs to Phacopidae'
'Illaenurus belongs to Illaenuridae'
'Illaenus belongs to Illaenidae'
'Illaenus conifrons is recombined as Thaleops conifrons'
'Incaia belongs to Trinucleidae'
'Incisopyge is a subjective synonym of Novakella'
'Inglefieldia belongs to Alokistocaridae'
'Ingriops belongs to Pterygometopidae'
'Iniospheniscus belongs to Diplagnostidae'
'Iniotoma belongs to Asaphiscidae'
'Inkouia belongs to Olenidae'
'Innitagnostus is a subjective synonym of Agnostus'
'Inouyina belongs to Namanoiidae'
'Inouyops belongs to Lorenzellidae'
'Inoyellaspis belongs to Lorenzellidae'
'Interalia belongs to Lonchocephalidae'
'Interproetus belongs to Tropidocoryphidae'
'Iohomia belongs to Anomocaridae'
'Iolgia belongs to Redlichiina'
'Iranaspidion belongs to Proetidae'
'Iranaspis belongs to Leiostegiidae'
'Irannella is a subjective synonym of Maladioidella'
'Irannella is a subjective synonym of Maladioidella' according to Shergold and Sdzuy 1984
'Iranoleesia belongs to Proasaphiscidae'
'Irgitkhemia belongs to Redlichiidae'
'Iriania is a subjective synonym of Brachymetopus'
'Iriania jayae is recombined as Brachymetopus jayae'
'Irinia belongs to Anomocaridae'
'Irvingella belongs to Elviniidae'
'Irvingelloides belongs to Trilobita'
'Isabelinia belongs to Asaphidae'
'Isalaux belongs to Pterygometopidae'
'Isbergia belongs to Rorringtoniidae'
'Ischyrophyma is a subjective synonym of Celmus'
'Ischyrotoma belongs to Dimeropygidae'
'Ishpella belongs to Trilobita'
'Isocolidae belongs to Ptychopariida'
'Isoprusia belongs to Odontopleuridae'
'Isoteloides belongs to Asaphidae'
'Isotelus belongs to Asaphidae'
'Issafenia is a nomen nudum'
'Issafeniella belongs to Ellipsocephalidae'
'Isyrakopeltis belongs to Asaphidae'
'Itagnostus is a subjective synonym of Peronopsis' according to Robison 1988
'Itagnostus is a subjective synonym of Peronopsis'
'Ithycephalus belongs to Kingstoniidae'
'Ithyektyphus belongs to Marjumiidae'
'Ityophoridae belongs to Ptychopariida'
'Ivanopleura belongs to Odontopleuridae'
'Iveria belongs to Eulomidae'
'Ivshinagnostus belongs to Agnostidae'
'Ivshinaspis belongs to Remopleurididae'
'Ivshiniellus is a subjective synonym of Atops'
'Iwayaspis is a subjective synonym of Pseudoyuepingia'
'Iwayaspis asaphoides is recombined as Pseudoyuepingia asaphoides'
'Jakutus belongs to Jakutidae'
'Jangudaspis belongs to Ptychopariidae'
'Jangudaspis princeps belongs to Jangudaspis' according to Ogienko 1956
'Jeffersonia belongs to Bathyuridae'
'Jegorovaia belongs to Alsataspididae'
'Jeholaspis is an objective synonym of Saukioides'
'Jenkinsonia belongs to Alokistocaridae'
'Jessievillia belongs to Elviniidae'
'Jialaopsis belongs to Ptychopariidae'
'Jiangjunshania belongs to Lorenzellidae'
'Jiangnania belongs to Diceratocephalidae'
'Jiangsuaspis belongs to Proasaphiscidae'
'Jiangsucephalus belongs to Proasaphiscidae'
'Jianxilithus is corrected as Janxilithus and belongs to Trinucleidae'
'Jiia belongs to Remopleurididae'
'Jimanomocare belongs to Anomocaridae'
'Jincella belongs to Solenopleuridae'
'Jinghediscus is a subjective synonym of Mallagnostus'
'Jingyangia belongs to Redlichiidae'
'Jiubaspis belongs to Proasaphiscidae'
'Jiumenia belongs to Ptychopariidae'
'Jixianaspis belongs to Wuaniidae'
'Jixianella belongs to Proasaphiscidae'
'Jixiania is replaced by Jixianella' according to Zhang 2001
'Jixiania jixianensis is recombined as Jixianella jixianensis' according to Zhang 2001
'Johntempleia belongs to Encrinuridae'
'Jonotus belongs to Trilobita'
'Josephulus belongs to Pliomeridae'
'Josina is a subjective synonym of Knechtelia'
'Jubileia belongs to Pterocephaliidae'
'Judaiella belongs to Jakutidae'
'Judomia belongs to Judomiidae'
'Jujuyaspis belongs to Olenidae'
'Jujuyops belongs to Calmoniidae'
'Juliaspis belongs to Namanoiidae'
'Junggarella belongs to Cheiruridae'
'Juraspis belongs to Anomocaridae'
'Juriietella belongs to Trilobita'
'Kabuqiia belongs to Solenopleuridae'
'Kadyella belongs to Ellipsocephalidae'
'Kailia belongs to Encrinuridae'
'Kailia (Parakailia) curvata belongs to Kailia (Parakailia)' according to Wu 1979
'Kailia (Parakailia) lata belongs to Kailia (Parakailia)' according to Wu 1979
'Kainella belongs to Remopleurididae'
'Kainisiniella [misspelled as Kainisiliellina] belongs to Asaphidae'
'Kainops belongs to Phacopidae'
'Kaltykelina belongs to Ceratopygidae'
'Kameschkoviella belongs to Ellipsocephalidae'
'Kamlacus is a nomen nudum'
'Kaninia belongs to Asaphiscidae'
'Kaniniella belongs to Asaphiscidae'
'Kanoshia belongs to Pliomeridae'
'Kaolishania belongs to Kaolishaniidae'
'Kaolishaniella belongs to Kaolishaniidae'
'Karagandoides belongs to Solenopleuridae'
'Karginella belongs to Proetidae'
'Kasatchaspis belongs to Crepicephalidae'
'Kaskia belongs to Proetidae'
'Kassinius belongs to Namanoiidae'
'Kathleenella belongs to Ptychaspididae'
'Kathrynia belongs to Harpetidae'
'Kathwaia belongs to Proetidae'
'Kaufmannella belongs to Ceratopygidae'
'Kawina belongs to Cheiruridae'
'Kayseraspis belongs to Asaphidae'
'Kayserops belongs to Acastidae'
'Kazachstania belongs to Dalmanitidae'
'Kazelia belongs to Changshaniidae'
'Kazellina is a subjective synonym of Kazelia' according to Suvorova and Chernysheva 1960
'Kazellina is a subjective synonym of Kazelia'
'Kazellina amsassiensis is recombined as Kazelia amsassiensis'
'Kazellina amsassiensis belongs to Kazellina' according to Sivov 1955
'Keeleaspis belongs to Edelsteinaspididae'
'Kegeliella is a subjective synonym of Gerastos'
'Keithia belongs to Ptychaspididae'
'Keithiella belongs to Ptychaspididae'
'Kendallina belongs to Parabolinoididae'
'Kennacryphaeus belongs to Acastidae'
'Kepingaspis belongs to Redlichiidae'
'Kepisis belongs to Leiostegiidae'
'Kerakephalichas is a subjective synonym of Amphilichas'
'Kerberodiscus is a subjective synonym of Leptochilodiscus'
'Kerbinella is a subjective synonym of Sukhanaspis'
'Kerfornella belongs to Homalonotidae'
'Kettneraspis belongs to Odontopleuridae'
'Ketyna is a subjective synonym of Kujandaspis'
'Khalfinella belongs to Proetidae'
'Kielania belongs to Harpetidae'
'Lowtheria is a subjective synonym of Kielania'
'Kijanella belongs to Ellipsocephalidae'
'Kindbladia belongs to Dokimocephalidae'
'Kinderlania belongs to Holotrachelidae'
'Kingaspis belongs to Ellipsocephalidae'
'Kingaspis (Kingaspidoides) was reranked as Kingaspidoides and belongs to Ellipsocephalidae'
'Kingstonia belongs to Kingstoniidae'
'Kingstoniidae belongs to Ptychopariida'
'Kiowaia belongs to Dokimocephalidae'
'Kirkdomina belongs to Styginidae'
'Kirkella belongs to Asaphidae'
'Kistocare belongs to Alokistocaridae'
'Klabavia belongs to Asaphidae'
'Klotziella belongs to Dolichometopidae'
'Kloucekia belongs to Acastidae'
'Knechtelia belongs to Menomoniidae'
'Kobayashella belongs to Aphelaspididae'
'Kobayashia belongs to Asaphidae'
'Kobayashipeltis belongs to Styginidae'
'Kochaspis belongs to Ptychopariidae'
'Kochiella belongs to Ptychopariidae'
'Kochiellina belongs to Ptychopariidae'
'Kochina belongs to Ptychopariidae'
'Kodymaspis belongs to Nileidae'
'Koenigia is an objective synonym of Homalonotus'
'Kogenium belongs to Ceratopygidae'
'Kokuria belongs to Anomocaridae'
'Kolbaspis belongs to Redlichinidae'
'Kolbinella belongs to Anomocaridae'
'Koldinia belongs to Plethopeltidae'
'Koldiniella belongs to Plethopeltidae'
'Koldinioidia belongs to Shumardiidae'
'Kolihapeltis belongs to Styginidae'
'Kollarcephalus belongs to Proetidae'
'Kolpura is a subjective synonym of Eymekops'
'Kolymella belongs to Cheiruridae'
'Kolymoproetus belongs to Proetidae'
'Kolymoproetus multisegmentatus belongs to Kolymoproetus' according to Maksimova 1978
'Komaspidella belongs to Kingstoniidae'
'Komaspis is a subjective synonym of Irvingella'
'Koneprusia belongs to Odontopleuridae'
'Koneprusites belongs to Tropidocoryphidae'
'Kontrastina belongs to Ordosiidae'
'Kooteniella belongs to Dorypygidae'
'Kooteniellina belongs to Dorypygidae'
'Koptura belongs to Proasaphiscidae'
'Koraipsis belongs to Pilekiidae'
'Kormagnostella is a subjective synonym of Kormagnostus'
'Korobovia belongs to Calodiscidae'
'Kosovopeltis belongs to Styginidae'
'Kotuia belongs to Anomocaridae'
'Kotysopeltis is corrected as Kotisopeltis and belongs to Styginidae'
'Kounamkites is corrected as Kuonamkites and belongs to Ptychopariidae'
'Kozlowskiaspis belongs to Calmoniidae'
'Krattaspis belongs to Cheiruridae'
'Krolina belongs to Ellipsocephalidae'
'Ktenoura belongs to Cheiruridae'
'Kueichowia belongs to Kueichowiidae'
'Kueichowiidae belongs to Redlichiida'
'Kujandaspis belongs to Eulomidae'
'Kujandina belongs to Elviniidae'
'Kuljumbina belongs to Plethopeltidae'
'Kuljumbina kulyumbensis is recombined as Plethopeltoides kulyumbensis'
'Kulmiella belongs to Proetidae'
'Kulyumbopeltis is a subjective synonym of Plethopeltoides'
'Kunshanaspis belongs to Oryctocephalidae'
'Kuraspis belongs to Lonchocephalidae'
'Kuraspoides belongs to Lonchocephalidae'
'Kushanopyge is a subjective synonym of Monkaspis' according to Zhang and Jell 1987
'Kutsingocephalus belongs to Proasaphiscidae'
'Kweichowilla belongs to Shumardiidae'
'Kymagnostus belongs to Agnostidae'
'Kymataspis belongs to Ellipsocephalidae'
'Kyphocephalus belongs to Dokimocephalidae'
'Labiostrella belongs to Pterocephaliidae'
'Labiostria is a subjective synonym of Aphelaspis'
'Labradoria belongs to Edelsteinaspididae'
'Lachnostoma belongs to Asaphidae'
'Lacorsalina belongs to Remopleurididae'
'Lacunoporaspis belongs to Proetidae'
'Ladadiscus is a subjective synonym of Mallagnostus'
'Laethoprusia belongs to Odontopleuridae'
'Lakaspis belongs to Nileidae'
'Laminurus belongs to Ptychopariidae'
'Lamproscutellum belongs to Styginidae'
'Lancastria belongs to Oryctocephalidae'
'Landyia belongs to Pilekiidae'
'Laneites belongs to Cheiruridae'
'Langgonbole belongs to Proetidae'
'Langgonia belongs to Encrinuridae'
'Langyashania belongs to Idahoiidae'
'Lannacus is a subjective synonym of Megalaspides'
'Laoyingshania belongs to Ptychopariidae'
'Lapidaria belongs to Asaphidae'
'Larifugula belongs to Kingstoniidae'
'Lasarchopyge belongs to Scharyiidae'
'Laticephalus belongs to Edelsteinaspididae'
'Latiglobusia belongs to Proetidae'
'Latikingaspis belongs to Ellipsocephalidae'
'Latilorenzella belongs to Wuaniidae'
'Latiproetus belongs to Proetidae'
'Latiredlichia belongs to Redlichiidae'
'Latoucheia belongs to Ellipsocephalidae'
'Latuzella belongs to Ellipsocephalidae'
'Lauzonella belongs to Idahoiidae'
'Lecanoaspis belongs to Cheilocephalidae'
'Lecanopleura belongs to Marjumiidae'
'Lecanopyge belongs to Illaenuridae'
'Lehua belongs to Cheiruridae'
'Leichneyella belongs to Anomocaridae'
'Leimitzia belongs to Hungaiidae'
'Leiobienvillia belongs to Olenidae'
'Leiocoryphe belongs to Plethopeltidae'
'Leioscutellum belongs to Styginidae'
'Leiostegina belongs to Homalonotidae'
'Leiostegium belongs to Leiostegiidae'
'Leiostegium (Euleiostegium) belongs to Leiostegium' according to Zhou and Zhan 1978
'Leiostegium (Euleiostegium) latilimbatum belongs to Leiostegium (Euleiostegium)' according to Zhou and Zhang 1978
'Leiostrototropis belongs to Pliomeridae'
'Leiostrototropis phlegeri belongs to Leiostrototropis' according to Raymond 1937
'Lejopyge calva is a subjective synonym of Lejopyge laevigata' according to Daily and Jago 1975
'Lenacare belongs to Alokistocaridae'
'Lenadiscus belongs to Yukoniidae'
'Lenaspis belongs to Jakutidae'
'Leocephalus belongs to Eurekiidae'
'Leonaspis belongs to Odontopleuridae'
'Lepidoproetus belongs to Tropidocoryphidae'
'Lepidoproetus (Dipharangus) was reranked as Dipharangus and belongs to Tropidocoryphidae'
'Leptopilus belongs to Trilobita'
'Leptoplastides [misspelled as Leptoplastoides] belongs to Olenidae' according to Moore 1959
'Leptoplastides belongs to Olenidae'
'Leptoplastus belongs to Olenidae'
'Lermontovia belongs to Ellipsocephalidae'
'Lermontoviella belongs to Antagmidae'
'Leurostega belongs to Olenidae'
'Levisaspis belongs to Norwoodiidae'
'Levisella belongs to Idahoiidae'
'Levisia belongs to Solenopleuridae'
'Liangshanaspis is a subjective synonym of Platycoryphe'
'Liangshanocephalus belongs to Isocolidae'
'Liaoningaspis belongs to Monkaspididae'
'Liaoningella belongs to Monkaspididae'
'Liaotropis belongs to Kaolishaniidae'
'Liaotropis tropis belongs to Liaotropis' according to Schrank 1975
'Liaoyangaspis is a subjective synonym of Lioparia'
'Lichakephalus belongs to Lichakephalidae'
'Lichapyge is a subjective synonym of Macropyge'
'Lichas belongs to Lichidae'
'Lichas (Ceratarges) was reranked as Ceratarges and belongs to Lichidae'
'Lichas (Conolichas) was reranked as Conolichas and belongs to Lichidae'
'Lichas (Echinolichas) was reranked as Echinolichas and belongs to Lichidae'
'Euarges is a subjective synonym of Acanthopyge'
'Lichas (Euarges) mephisto is recombined as Mephiarges mephisto'
'Lichas (Hoplolichas) was reranked as Hoplolichas and belongs to Lichidae'
'Lichas (Metopolichas) was reranked as Metopolichas and belongs to Lichidae'
'Oncholichas is an objective synonym of Arctinurus'
'Platopolichas is a subjective synonym of Uralichas'
'Lichas (Platylichas) was reranked as Platylichas and belongs to Lichidae'
'Plusiarges is a subjective synonym of Trochurus'
'Pterolichas is an objective synonym of Arctinurus'
'Lichas (Uralichas) was reranked as Uralichas and belongs to Lichidae'
'Lichas branikensis is recombined as Lobopyge branikensis'
'Lichengia belongs to Saukiidae'
'Licnocephala belongs to Bathyuridae'
'Liexiaspis belongs to Pliomeridae'
'Liexiaspis zhengjiaensis belongs to Liexiaspis' according to Liu 1982
'Ligiscus belongs to Styginidae'
'Limataceps belongs to Ellipsocephalidae'
'Limbadiscus is a subjective synonym of Natalina'
'Limpeina belongs to Eulomidae'
'Linguagnostus belongs to Diplagnostidae'
'Linguaphillipsia belongs to Proetidae'
'Linguaproetus belongs to Tropidocoryphidae'
'Linguchuangia belongs to Leiostegiidae'
'Lingukainella belongs to Remopleurididae'
'Linguocalymene belongs to Calymenidae'
'Liobole (Panibole) was reranked as Panibole and belongs to Proetidae'
'Liobolina belongs to Proetidae'
'Liocalymene belongs to Calymenidae'
'Liocare belongs to Anomocarellidae'
'Liocnemis belongs to Pterygometopidae'
'Lioharpes belongs to Harpetidae'
'Liokootenia belongs to Dorypygidae'
'Liolophops belongs to Phacopidae'
'Liomegalaspides belongs to Asaphidae'
'Lioparella belongs to Proasaphiscidae'
'Liopeishania belongs to Anomocarellidae'
'Liopelta belongs to Anomocarellidae'
'Liosolenopleura belongs to Solenopleuridae'
'Liostracina belongs to Liostracinidae'
'Liostracinoides is a subjective synonym of Phylacterus'
'Liostracinoides is a subjective synonym of Phylacterus' according to Westrop 1989
'Liostracus is replaced by Andrarina'
'Liparges is an objective synonym of Dicranogmus'
'Liriamnica belongs to Shumardiidae'
'Lisania belongs to Lisaniidae'
'Lisaniella is a subjective synonym of Redlichaspis'
'Lisogoragnostus belongs to Peronopsidae'
'Lisogorites belongs to Asaphidae'
'Listroa belongs to Aphelaspididae'
'Litagnostus is a subjective synonym of Pseudagnostus'
'Litaspis belongs to Edelsteinaspididae'
'Litavkaspis belongs to Agraulidae'
'Litocephalus belongs to Aphelaspididae'
'Litometopus belongs to Weymouthiidae'
'Liuheaspis belongs to Damesellidae'
'Liwia belongs to Nektaspida'
'Llandovacaste belongs to Acastidae'
'Llanoaspidella belongs to Llanoaspididae'
'Llanoaspididae belongs to Ptychopariida'
'Llanoaspis belongs to Llanoaspididae'
'Lloydia belongs to Leiostegiidae'
'Lloydolithus belongs to Trinucleidae'
'Lobocephalina is a subjective synonym of Conokephalina'
'Lobopyge belongs to Lichidae'
'Nitidulopyge is a subjective synonym of Perunaspis'
'Lochkovella belongs to Phacopidae'
'Lochmanaspis belongs to Eurekiidae'
'Lodenicia belongs to Tropidocoryphidae'
'Loeipyge belongs to Brachymetopidae'
'Loganellus belongs to Idahoiidae'
'Loganopeltis belongs to Harpididae'
'Loganopeltoides belongs to Harpididae'
'Lohanpopsis belongs to Remopleurididae'
'Lomsucaspis belongs to Anomocaridae'
'Lonchocephalidae belongs to Ptychopariida'
'Lonchocephalus belongs to Lonchocephalidae'
'Lonchodomas belongs to Raphiophoridae'
'Longduia belongs to Yinitidae'
'Longianda belongs to Saukiandidae'
'Longiproetus belongs to Proetidae'
'Longxumenia belongs to Anomocaridae'
'Loparella belongs to Eulomidae'
'Lopeuloma belongs to Eulomidae'
'Lophiokephalion belongs to Proetidae'
'Lophoholcus belongs to Saukiidae'
'Lophosaukia belongs to Saukiidae'
'Lordshillia belongs to Trinucleidae'
'Lorenzella belongs to Lorenzellidae'
'Loshanella belongs to Remopleurididae'
'Loxonepea belongs to Nepeidae'
'Loxopeltis belongs to Trilobita'
'Luaspis belongs to Yunnanocephalidae'
'Lugalella belongs to Proetidae'
'Luia belongs to Anomocarellidae'
'Lunacephalus belongs to Pterocephaliidae'
'Lunolenus belongs to Abadiellidae'
'Luojiashania belongs to Proetidae'
'Luonanocephalus belongs to Proasaphiscidae'
'Luotuolingia belongs to Pterocephaliidae'
'Lusampa belongs to Trilobita'
'Lusatiops belongs to Ellipsocephalidae'
'Luvsanodiscus belongs to Hebediscidae'
'Luvsanodiscus [misspelled as Lavsanodiscus] belongs to Agnostida' according to Sepkoski 2002
'Luvsanodiscus gammatus belongs to Luvsanodiscus' according to Korobov 1980
'Luxella belongs to Ptychopariidae'
'Luyanhaoaspis belongs to Asaphiscidae'
'Luyanhaoia belongs to Asaphiscidae'
'Lycophron belongs to Asaphidae'
'Lydiaspis belongs to Anomocarellidae'
'Lygdozoon belongs to Dalmanitidae'
'Lynaspis belongs to Liostracinidae'
'Lyralichas belongs to Lichidae'
'Lyrapyge belongs to Encrinuridae'
'Lyriaspis belongs to Ptychopariidae'
'Macelloura belongs to Cheilocephalidae'
'Machairagnostus belongs to Diplagnostidae'
'Mackenziurus belongs to Encrinuridae'
'Macrogrammus belongs to Pilekiidae'
'Macronoda belongs to Ptychaspididae'
'Macropyge belongs to Ceratopygidae'
'Macropygella belongs to Ceratopygidae'
'Macroterolichas is a subjective synonym of Metopolichas'
'Macrotoxus belongs to Anomocaridae'
'Madaraspis belongs to Bathyuridae'
'Madarocephalus belongs to Catillicephalidae'
'Maduiya belongs to Aphelaspididae'
'Madygenia belongs to Rorringtoniidae'
'Magnacephalus belongs to Eurekiidae'
'Magnomma belongs to Olenidae'
'Mahaiella belongs to Proetidae'
'Maiaspis belongs to Solenopleuridae'
'Majiangia is a subjective synonym of Meitania'
'Maladia belongs to Eurekiidae'
'Maladioidella belongs to Idahoiidae'
'Malimanaspis belongs to Aulacopleuridae'
'Malinaspis belongs to Raphiophoridae'
'Malladaia belongs to Dalmanitidae'
'Malongullia belongs to Raphiophoridae'
'Malungia is a subjective synonym of Dolerolenus'
'Malungia laevigata is recombined as Dolerolenus laevigata'
'Malvinella belongs to Calmoniidae'
'Malykania belongs to Jakutidae'
'Manchurocephalus is a subjective synonym of Paracoosia'
'Mannopyge belongs to Proetidae'
'Mannschreekia is a subjective synonym of Theodenisia'
'Mansiella belongs to Acrocephalitidae'
'Mansuyella belongs to Ceratopygidae'
'Mansuyia belongs to Kaolishaniidae'
'Manublesia belongs to Solenopleuridae'
'Maotunia belongs to Proasaphiscidae'
'Mapania belongs to Mapaniidae'
'Mapanopsis belongs to Mapaniidae'
'Marekolithus belongs to Trinucleidae'
'Maritimella is a nomen nudum'
'Marjumia belongs to Marjumiidae'
'Marjumiidae belongs to Ptychopariida'
'Marrolithoides belongs to Trinucleidae'
'Marrolithus belongs to Trinucleidae'
'Marsaisia is a subjective synonym of Richterops'
'Maryvillia belongs to Kingstoniidae'
'Maspakites belongs to Conokephalinidae'
'Maspakites occidentalis belongs to Maspakites' according to Lazarenko and Nikiforov 1968
'Matania belongs to Catillicephalidae'
'Mataninella belongs to Solenopleuridae'
'Maurotarion belongs to Aulacopleuridae'
'Maustonia is a subjective synonym of Taenicephalus'
'Mayiella belongs to Mayiellidae'
'Mayopyge is a subjective synonym of Parasphaerexochus'
'Mayopyge zapata is recombined as Parasphaerexochus zapata'
'Mcnairia is a subjective synonym of Parehmania'
'Meadowtownella belongs to Odontopleuridae'
'Mecophrys [misspelled as Mecophyrs] belongs to Changshaniidae'
'Meeria is a subjective synonym of Idahoia'
'Megadunderbergia belongs to Elviniidae'
'Megagnostus belongs to Agnostina'
'Megagraulos belongs to Wuaniidae'
'Megalaspidella is a subjective synonym of Asaphellus'
'Megalaspides belongs to Asaphidae'
'Megalaspidicus is a nomen nudum'
'Megalaspis is replaced by Megistaspis'
'Plesiomegalaspis is a subjective synonym of Asaphellus'
'Megalisania belongs to Lisaniidae'
'Megalopsis belongs to Anomocarellidae'
'Megapalaeolenus belongs to Palaeolenidae'
'Megistaspis belongs to Asaphidae'
'Megistaspis (Ekeraspis) was reranked as Ekeraspis and belongs to Asaphidae'
'Megistaspis (Megistaspidella) was reranked as Megistaspidella and belongs to Asaphidae'
'Varvaspis is an objective synonym of Paramegistaspis'
'Meisterella belongs to Conokephalinidae'
'Meitanella belongs to Yinitidae'
'Meitania belongs to Ptychopariidae'
'Meitania (Promeitania) was reranked as Promeitania and belongs to Ptychopariidae'
'Meitanillaenus belongs to Styginidae'
'Mekynophrys is a subjective synonym of Basilicus'
'Memmatella belongs to Proasaphiscidae'
'Mendolaspis belongs to Raphiophoridae'
'Mendoparabolina is a subjective synonym of Bienvillia'
'Mendosina belongs to Remopleurididae'
'Mendospidella belongs to Dolichometopidae'
'Meneghinella belongs to Trilobita'
'Menevia is replaced by Meneviella'
'Meneviella belongs to Holocephalinidae'
'Meniscocoryphe belongs to Plethopeltidae'
'Meniscuchus belongs to Weymouthiidae'
'Menneraspidae is corrected as Menneraspididae and belongs to Redlichiida'
'Menocephalites belongs to Solenopleuridae'
'Menomonia belongs to Menomoniidae'
'Menoparia belongs to Remopleurididae'
'Menorcaspis belongs to Proetidae'
'Meringaspis is a subjective synonym of Damesops'
'Merlinia belongs to Asaphidae'
'Meropalla belongs to Leiostegiidae'
'Meroperix belongs to Styginidae'
'Mesagnostus is an objective synonym of Peronopsis'
'Mesetaia is a subjective synonym of Kingaspis'
'Mesotaphraspis belongs to Toernquistiidae'
'Metaacidaspis belongs to Lichakephalidae'
'Metabalangia belongs to Oryctocephalidae'
'Metabowmania is a subjective synonym of Hillyardina'
'Metacalymene belongs to Calymenidae'
'Metacanthina belongs to Acastidae'
'Metachangshania is a subjective synonym of Changshania'
'Metacryphaeus belongs to Calmoniidae'
'Metadoxides belongs to Metadoxididae'
'Metadoxididae belongs to Redlichiida'
'Metagnostidae belongs to Agnostida'
'Metakootenia belongs to Dorypygidae'
'Metalisania belongs to Lisaniidae'
'Metanomocare belongs to Anomocaridae'
'Metaphillipsia belongs to Proetidae'
'Metapilekia belongs to Pilekiidae'
'Metapliomerops belongs to Pilekiidae'
'Metaptychopyge belongs to Asaphidae'
'Metaredlichia belongs to Redlichiidae'
'Metaredlichioides is a subjective synonym of Ushbaspis' according to Zhang 1997
'Metascutellum belongs to Styginidae'
'Metayuepingia belongs to Asaphidae'
'Meteoraspis belongs to Tricrepicephalidae'
'Metisaspina belongs to Elviniidae'
'Metisaspis belongs to Llanoaspididae'
'Metopias is replaced by Metopolichas'
'Metopotropis belongs to Auritamidae'
'Mexicaspis belongs to Zacanthoididae'
'Mexicella belongs to Ptychopariidae'
'Mezocrotalus is a subjective synonym of Crotalocephalina'
'Miagnostus is an objective synonym of Lejopyge'
'Mianxiandiscus is a subjective synonym of Tsunyidiscus'
'Miaobanpoia belongs to Proasaphiscidae'
'Miaopopsis belongs to Raphiophoridae'
'Micagnostus belongs to Peronopsidae'
'Michaspis is a subjective synonym of Iranoleesia'
'Micmacca belongs to Chengkouiidae'
'Micmaccopsis belongs to Zacanthoididae'
'Microdiscus is a nomen vanum'
'Microparia belongs to Cyclopygidae'
'Microparia (Paramicroparia) was reranked as Paramicroparia and belongs to Cyclopygidae'
'Microparia (Paramicroparia) acuta is recombined as Paramicroparia acuta'
'Microryctocara belongs to Oryctocephalidae'
'Microscutellum belongs to Styginidae'
'Microspatulina belongs to Proetidae'
'Mictosaukia belongs to Saukiidae'
'Milaspis belongs to Corynexochidae'
'Mimocryphaeus belongs to Acastidae'
'Mindycrusta belongs to Asaphiscidae'
'Minicephalus belongs to Illaenuridae'
'Minkella belongs to Parabolinoididae'
'Minupeltis belongs to Solenopleuridae'
'Minupeltis definita belongs to Minupeltis'
'Minusella is a misspelling of Minusinella'
'Minusinella belongs to Metadoxididae'
'Mioptychopyge belongs to Asaphidae'
'Mirabole belongs to Proetidae'
'Miraculaspis belongs to Condylopygidae'
'Miracybele is a subjective synonym of Cybelurus'
'Miranda belongs to Conokephalinidae'
'Miranella belongs to Corynexochidae'
'Miraspis belongs to Odontopleuridae'
'Miriproetus belongs to Tropidocoryphidae'
'Missisquoia is a subjective synonym of Parakoldinioidia'
'Missisquoiidae belongs to Trilobita'
'Mitchellaspis is a subjective synonym of Batocara'
'Mitchellia is replaced by Mitchellaspis' according to Henningsmoen 1959
'Modellops is a subjective synonym of Hollardops'
'Modocia belongs to Marjumiidae'
'Modocia berkeyi is recombined as Camaraspoides berkeyi' according to Fredrickson 1949
'Modocia berkeyi is recombined as Camaraspis berkeyi' according to Grant 1965
'Modocia berkeyi is recombined as Camaraspis berkeyi'
'Monexagnostus is a subjective synonym of Peratagnostus'
'Mongolodiscus is a subjective synonym of Egyngolia'
'Mongolodiscus zaicevi is recombined as Egyngolia zaicevi'
'Monocheilus belongs to Dikelocephalidae'
'Monorakos belongs to Pterygometopidae'
'Monosulcatina belongs to Lonchocephalidae'
'Moravocoryphe belongs to Proetidae'
'Moretaeva belongs to Trilobita' according to Hupé 1960
'Morgatia belongs to Dalmanitidae'
'Morocconites belongs to Acastidae'
'Morosa belongs to Pterocephaliidae'
'Morosa brevispina belongs to Morosa'
'Morosa extensa belongs to Morosa'
'Moschoglossis belongs to Proetidae'
'Moxomia belongs to Olenidae'
'Mucronaspis belongs to Dalmanitidae'
'Mulciberaspis belongs to Styginidae'
'Mundocephalina belongs to Estaingiidae'
'Munija belongs to Solenopleuridae'
'Munijia belongs to Solenopleuridae'
'Murphycops is a subjective synonym of Acernaspis'
'Myinda belongs to Trinucleidae'
'Myindella belongs to Trinucleidae'
'Myoproetus is an objective synonym of Myoproetus'
'Myoproetus belongs to Proetidae'
'Myopsolenus belongs to Ellipsocephalidae'
'Mystrocephala belongs to Brachymetopidae'
'Mytocephala was reranked as Zeliszkella (Mytocephala) and belongs to Zeliszkella' according to Struve 1958
'Mytocephala belongs to Dalmanitidae'
'Myttonia belongs to Trinucleidae'
'Nadiyella belongs to Anomocaridae'
'Nagaproetus belongs to Tropidocoryphidae'
'Nahannia belongs to Asaphidae'
'Nahannicephalus belongs to Llanoaspididae'
'Namanoia belongs to Namanoiidae'
'Namanoiidae belongs to Trilobita'
'Nambeetella belongs to Raphiophoridae'
'Namuropyge (Coignops) was reranked as Coignops and belongs to Aulacopleuridae'
'Namuropyge (Coignops) belongs to Namuropyge' according to Gandl 1980
'Namuropyge (Coignops) martinezi belongs to Namuropyge (Coignops)' according to Gandl 1980
'Nangaoia belongs to Ptychopariidae'
'Nangaoia (Gedongaspis) was reranked as Gedongaspis and belongs to Ptychopariidae'
'Nangaoia (Gedongaspis) granulosa is recombined as Gedongaspis granulosa'
'Nangaoia (Gedongaspis) oblonga is recombined as Gedongaspis oblonga'
'Nangaops belongs to Ptychopariidae'
'Nanillaenus belongs to Illaenidae'
'Nankinolithus belongs to Trinucleidae'
'Nanlingia is a subjective synonym of Girvanopyge'
'Nannopeltis belongs to Ceratopygidae'
'Nanshanaspis belongs to Raphiophoridae'
'Naraoia belongs to Nektaspida'
'Nasocephalus belongs to Marjumiidae'
'Nassovia belongs to Ptychopariidae'
'Natmus belongs to Eulomidae'
'Naustia belongs to Remopleurididae'
'Nebidella is a subjective synonym of Conoredlichia'
'Nehanniaspis belongs to Edelsteinaspididae'
'Nelegeria belongs to Ellipsocephalidae'
'Nelsonia belongs to Ptychopariidae'
'Neltneria belongs to Neltneriidae'
'Neoacrocephalites belongs to Solenopleuridae'
'Neoagnostus is a subjective synonym of Pseudorhaptagnostus'
'Neoanomocarella belongs to Anomocarellidae'
'Neochilonorria belongs to Trilobita'
'Neoglaphyraspis belongs to Lonchocephalidae'
'Neohedinaspis belongs to Ceratopygidae'
'Neolenus belongs to Olenidae'
'Neolichas belongs to Lichidae'
'Neometacanthus belongs to Acastidae'
'Neopeltis belongs to Asaphidae'
'Neopoliellina belongs to Dolichometopidae'
'Neoprobolium belongs to Dalmanitidae'
'Paraproetus is replaced by Siciliproetus'
'Siciliproetus is a subjective synonym of Neogriffithides'
'Neoproetus (Triproetus) was reranked as Triproetus and belongs to Proetidae'
'Neopsilocephalina belongs to Nileidae'
'Neoredlichia belongs to Redlichiidae'
'Neoshirakiella belongs to Shirakiellidae'
'Neosolenopleurella belongs to Solenopleuridae'
'Neosynphoria is an objective synonym of Synphoria'
'Neotaenicephalus belongs to Trilobita'
'Nepea belongs to Nepeidae'
'Nepeidae belongs to Ptychopariida'
'Nephranops belongs to Phacopidae'
'Neptunagnostella is a subjective synonym of Geragnostus'
'Nericiaspis belongs to Olenidae'
'Nerudaspis belongs to Asaphidae'
'Neseuretus belongs to Calymenidae'
'Nevadia belongs to Nevadiidae'
'Nganasanella belongs to Aphelaspididae'
'Nieszkowskia belongs to Cheiruridae'
'Nilegna belongs to Solenopleuridae'
'Nileoides belongs to Asaphidae'
'Nileus belongs to Nileidae'
'Ninadiscus belongs to Weymouthiidae'
'Ninaspis belongs to Solenopleuridae'
'Ningkianites belongs to Asaphidae'
'Ningkianites ningkianensis belongs to Ningkianites' according to Lu 1975
'Ningkianolithus belongs to Trinucleidae'
'Niobe belongs to Asaphidae'
'Niobella belongs to Asaphidae'
'Niobides belongs to Asaphidae'
'Niobina belongs to Asaphidae'
'Nipponarges belongs to Lichidae'
'Nipponocalymene belongs to Calymenidae'
'Nitidocare belongs to Proetidae'
'Niuchangella belongs to Scharyiidae'
'Nixonella is a subjective synonym of Genevievella'
'Nobiliasaphus belongs to Asaphidae'
'Nodiceps belongs to Edelsteinaspididae'
'Noelaspis belongs to Idahoiidae'
'Nomadinis belongs to Monkaspididae'
'Nonix is a subjective synonym of Dicranopeltis'
'Norasaphus belongs to Asaphidae'
'Nordia belongs to Lonchocephalidae'
'Norinia belongs to Asaphidae'
'Norwoodella belongs to Norwoodiidae'
'Norwoodia belongs to Norwoodiidae'
'Notaiella belongs to Plethopeltidae'
'Notasaphus is a subjective synonym of Kootenia'
'Notoaphelaspis belongs to Aphelaspididae'
'Notopeltis belongs to Asaphidae'
'Novakella belongs to Cyclopygidae'
'Novaspis belongs to Trinucleidae'
'Novoameura belongs to Proetidae'
'Nucleurus belongs to Encrinuridae'
'Nunnaspis belongs to Proetidae'
'Nyaya belongs to Hystricuridae'
'Nyella belongs to Ptychopariidae'
'Obliteraspis belongs to Pliomeridae'
'Obrucheviaspis belongs to Dokimocephalidae'
'Octillaenus belongs to Illaenidae'
'Octobronteus belongs to Styginidae'
'Oculeus belongs to Remopleurididae'
'Oculichasmops belongs to Pterygometopidae'
'Oculomagnus is a subjective synonym of Benthamaspis'
'Odontocephalus belongs to Dalmanitidae'
'Odontochile belongs to Dalmanitidae'
'Odontochile (Erbenochile) was reranked as Erbenochile and belongs to Acastidae'
'Oedicybele belongs to Encrinuridae'
'Oehlertia is replaced by Oehlertaspis'
'Ogmasaphus belongs to Asaphidae'
'Ogmocnemis is a subjective synonym of Decoroproetus'
'Ogyginus belongs to Asaphidae'
'Ogygiocarella belongs to Asaphidae'
'Ogygiocaris belongs to Asaphidae'
'Ogygites belongs to Asaphidae'
'Ogygitoides belongs to Asaphidae'
'Ogygopsis belongs to Dorypygidae'
'Oidalaproetus belongs to Proetidae'
'Oinochoe belongs to Lichidae'
'Olegaspis belongs to Lonchocephalidae'
'Olekmaspis belongs to Ellipsocephalidae'
'Olenaspella belongs to Aphelaspididae'
'Olenekella belongs to Illaenuridae'
'Olenekina belongs to Ptychopariidae'
'Olenoides belongs to Dorypygidae'
'Olenopsis is replaced by Dolerolenus'
'Olentella belongs to Aphelaspididae'
'Olenus belongs to Olenidae'
'Olenus salteri is recombined as Leptoplastides salteri'
'Olenus salteri is recombined as Leptoplastoides salteri' according to Chatterton 1996
'Oleorthis porosa belongs to Oleorthis' according to Havlicek 1968
'Olgaspis belongs to Redlichiidae'
'Oligometopus belongs to Cheilocephalidae'
'Omeipsis belongs to Taihungshaniidae'
'Ommokris is a subjective synonym of Dalmanites'
'Ompheter is a subjective synonym of Opipeuter'
'Onaraspis belongs to Metadoxididae'
'Onchocephalina belongs to Antagmidae'
'Onchocephalites belongs to Ptychopariidae'
'Onchocephalus belongs to Antagmidae'
'Onchometopus belongs to Asaphidae'
'Onchonotellus belongs to Catillicephalidae'
'Onchonotina is a subjective synonym of Onchonotellus'
'Onchonotopsis belongs to Catillicephalidae'
'Onchonotus belongs to Catillicephalidae'
'Onchopeltis belongs to Elviniidae'
'Onnia belongs to Trinucleidae'
'Onychopyge belongs to Ceratopygidae'
'Onycopyge belongs to Cheiruridae'
'Agnostonymus is a subjective synonym of Onymagnostus'
'Oodiscus belongs to Weymouthiidae'
'Oopsites belongs to Telephinidae'
'Oosthuizenella belongs to Calmoniidae'
'Opipeuter belongs to Telephinidae'
'Opoa belongs to Styginidae'
'Opsimasaphus is a subjective synonym of Birmanites'
'Opsimasaphus jaanussoni is recombined as Birmanites jaanussoni'
'Opsiosoryctocephalus belongs to Oryctocephalidae'
'Opsypharus is a subjective synonym of Failleana'
'Orbitoproetus belongs to Proetidae'
'Ordosia belongs to Ordosiidae'
'Oreisator is a subjective synonym of Erzishania'
'Orienturus belongs to Ptychopariidae'
'Orlovia belongs to Ptychopariidae'
'Orloviella belongs to Ptychopariidae'
'Ormathops belongs to Dalmanitidae'
'Ormistonia belongs to Proetidae'
'Ormistoniella belongs to Proetidae'
'Orometopus belongs to Alsataspididae'
'Orphanaspis belongs to Odontopleuridae'
'Orria is a subjective synonym of Bathyuriscus'
'Orriella is a subjective synonym of Bathyuriscus'
'Orthodorsum belongs to Anomocarellidae'
'Oryctocara belongs to Oryctocephalidae'
'Oryctocare belongs to Oryctocephalidae'
'Oryctocephalina belongs to Oryctocephalidae'
'Oryctocephalites belongs to Oryctocephalidae'
'Oryctocephaloides belongs to Oryctocephalidae'
'Oryctocephalops belongs to Oryctocephalidae'
'Oryctocephalus belongs to Oryctocephalidae'
'Orygmaspis belongs to Parabolinoididae'
'Osceolia belongs to Dikelocephalidae'
'Osekaspis belongs to Cheiruridae'
'Osmolskia belongs to Proetidae'
'Tricornotarion is a subjective synonym of Maurotarion'
'Otarion elegans belongs to Otarion' according to Munster 1842
'Otarion elegans is recombined as Skemmatocare elegans' according to Richter and Richter 1927
'Otarionella is a subjective synonym of Otarion'
'Otarozoum belongs to Lichidae'
'Ottenbyaspis belongs to Panderiidae'
'Ouijjania belongs to Bigotinidae'
'Ourikaia belongs to Ellipsocephalidae'
'Ovalocephalus belongs to Pliomeridae'
'Ovatoryctocara is a subjective synonym of Arthricocephalus'
'Oxyagnostus is a subjective synonym of Acmarhachis'
'Oxygonaspis is a subjective synonym of Pingquania'
'Pachyaspis belongs to Ptychopariidae'
'Danzhaina is a subjective synonym of Xingrenaspis'
'Pacificurus is a subjective synonym of Batocara'
'Paciphacops belongs to Phacopidae'
'Paedeumias belongs to Olenellidae'
'Paedeumias transitans belongs to Paedeumias'
'Paenebeltella belongs to Hystricuridae'
'Pagetia belongs to Eodiscidae'
'Pagetia (Sinopagetia) was reranked as Sinopagetia and belongs to Eodiscidae'
'Pagetia (Sinopagetia) huainanensis is recombined as Sinopagetia huainanensis'
'Pagetia (Sinopagetia) neimengguensis is recombined as Sinopagetia neimengguensis'
'Pagetiellus is a subjective synonym of Delgadella'
'Pagodia belongs to Pagodiidae'
'Pagodia (Lotosoides) was reranked as Lotosoides and belongs to Pagodiidae'
'Pagometopus belongs to Alsataspididae'
'Paivinia belongs to Pharostomatidae'
'Paladin belongs to Proetidae'
'Palaeadotes is a subjective synonym of Bergeronites'
'Palaeoharpes belongs to Harpetidae'
'Palaeolenella belongs to Palaeolenidae'
'Palaeolenidae belongs to Ptychopariida'
'Palaeolenides belongs to Palaeolenidae'
'Palaeolenus belongs to Palaeolenidae'
'Palaeophillipsia belongs to Proetidae'
'Palella belongs to Anomocaridae'
'Palaeocrepicephalus is an objective synonym of Kochaspis'
'Paleofossus belongs to Edelsteinaspididae'
'Paleooryctocephalus belongs to Oryctocephalidae'
'Palmerara belongs to Trilobita' according to Novack-Gottshall 2003
'Palmeraspis belongs to Ptychopariidae'
'Palpebralia was reranked as Drevermannia (Palpebralia) and belongs to Drevermannia' according to Richter and Richter 1943
'Palpebralia (Pontipalpebralia) was reranked as Pontipalpebralia and belongs to Proetidae'
'Palpebralia (Pontipalpebralia) belongs to Palpebralia' according to Lutke 1968
'Palpebralia (Pontipalpebralia) pontifera belongs to Palpebralia (Pontipalpebralia)' according to Lütke 1968
'Palquiella belongs to Alsataspididae'
'Pamirotellus is a subjective synonym of Brongniartella'
'Panacus belongs to Ptychopariidae'
'Panarchaegonus belongs to Scharyiidae'
'Panarchaeogonus belongs to Scharyiidae'
'Pandaspinapyga belongs to Cheiruridae'
'Panderia belongs to Panderiidae'
'Panderiidae belongs to Corynexochida'
'Panxinella belongs to Zacanthoididae'
'Paokannia belongs to Yinitidae'
'Papillicalymene belongs to Calymenidae'
'Papyriaspis belongs to Papyriaspididae'
'Paraacidaspis belongs to Lichakephalidae'
'Paraantagmus belongs to Antagmidae'
'Paraantagmus (Balangcunaspis) was reranked as Balangcunaspis and belongs to Ptychopariidae'
'Paraantagmus (Balangcunaspis) subcylindricus is recombined as Balangcunaspis subcylindricus'
'Paraantagmus (Balangcunaspis) transversus is recombined as Balangcunaspis transversus'
'Parabailiella belongs to Conocoryphidae'
'Parabarrandia belongs to Nileidae'
'Parabasilicus is a subjective synonym of Basilicus'
'Parabathycheilus is a subjective synonym of Bathycheilus'
'Parabellefontia belongs to Asaphidae'
'Parablackwelderia is a subjective synonym of Blackwelderia'
'Parabolina belongs to Olenidae'
'Parabolinella belongs to Olenidae'
'Parabolinoides belongs to Parabolinoididae'
'Parabolinoididae belongs to Asaphida'
'Parabolinopsis is a subjective synonym of Leptoplastides'
'Parabouleia belongs to Calmoniidae'
'Parabriscoia is a subjective synonym of Briscoia'
'Parabumasttides is a misspelling of Parabumastides'
'Parabumastides dayongensis belongs to Parabumastides' according to Ji 1987
'Paracalmonia belongs to Calmoniidae'
'Paracedaria belongs to Llanoaspididae'
'Paraceraurus belongs to Cheiruridae'
'Parachangshania belongs to Changshaniidae'
'Parachaunoproetus belongs to Proetidae'
'Parachuangia is a subjective synonym of Chuangia'
'Paracoosia belongs to Anomocaridae'
'Paracrepicephalus is an objective synonym of Tricrepicephalus'
'Paracrocephalites belongs to Solenopleuridae'
'Paracryphaeus belongs to Acastidae'
'Paracybantyx belongs to Styginidae'
'Paracybeloides belongs to Encrinuridae'
'Paradamesella belongs to Damesellidae'
'Paradechenella belongs to Proetidae'
'Paradoxides belongs to Paradoxididae'
'Paradoxides pusillus is recombined as Phanoptes pusillus'
'Paradoxididae belongs to Redlichiida'
'Paraenshia belongs to Elviniidae'
'Paraeosoptychoparia belongs to Ptychopariidae'
'Parafrithjofia belongs to Proetidae'
'Paraglobusia belongs to Proetidae'
'Paragnostus is an objective synonym of Condylopyge'
'Paragriffithides belongs to Proetidae'
'Paraharpes belongs to Harpetidae'
'Parahiolites belongs to Ptychopariidae'
'Parahomalonotus belongs to Homalonotidae'
'Parahousia belongs to Pterocephaliidae'
'Parahystricurus belongs to Hystricuridae'
'Paraichangia belongs to Estaingiidae'
'Parajialaopsis belongs to Inouyiidae'
'Parakailia belongs to Encrinuridae'
'Parakailia was reranked as Kailia (Parakailia) and belongs to Kailia' according to Wu 1979
'Parakingaspidoides is a nomen nudum'
'Parakoldinia belongs to Cheilocephalidae'
'Parakoldinioidia belongs to Missisquoiidae'
'Parakotuia belongs to Anomocaridae'
'Paralbertella belongs to Zacanthoididae'
'Paraleiolichas belongs to Lichidae'
'Paralejurus belongs to Styginidae'
'Paralevisia belongs to Ordosiidae'
'Paralichas is replaced by Amphilichas'
'Paralisaniella belongs to Lisaniidae'
'Paralorenzella belongs to Lorenzellidae'
'Paramalungia belongs to Dolerolenidae'
'Paramecephalus is a subjective synonym of Parahiolites'
'Paramegalaspis belongs to Asaphidae'
'Paramicmacca belongs to Ellipsocephalidae'
'Paranacaste is a subjective synonym of Bainella'
'Paranevadella belongs to Judomiidae'
'Paranomocare belongs to Anomocaridae'
'Paranomocarella belongs to Anomocarellidae'
'Paranorwoodia belongs to Norwoodiidae'
'Paranumia is a subjective synonym of Lunacrania'
'Paraolenoides belongs to Dorypygidae'
'Paraolenus belongs to Olenidae'
'Paraorlovia belongs to Asaphiscidae'
'Parapachyaspis belongs to Alokistocaridae'
'Parapagetia belongs to Hebediscidae'
'Parapalpebralia belongs to Proetidae'
'Parapalpebralia andegavensis belongs to Parapalpebralia' according to Pillet 1973
'Parapaokannia belongs to Yinitidae'
'Parapeishania is a subjective synonym of Peishania'
'Paraperiomma belongs to Ptychopariidae'
'Paraphillipsia belongs to Proetidae'
'Paraphillipsinella is a subjective synonym of Paraphillipsinella'
'Paraphillipsinella belongs to Styginidae'
'Paraphoreotropis is a subjective synonym of Tholifrons'
'Parapilekia belongs to Pilekiidae'
'Paraplagiura belongs to Ptychopariidae'
'Paraplesiograulos belongs to Agraulidae'
'Paraplethopeltis belongs to Hystricuridae'
'Paraplicatolina belongs to Olenidae'
'Parapliomera belongs to Pliomeridae'
'Parapoliella belongs to Dolichometopidae'
'Parapoulsenia belongs to Ptychopariidae'
'Paraprotolenella belongs to Ellipsocephalidae'
'Paraqingshuiheella belongs to Changshaniidae'
'Pararaia belongs to Estaingiidae'
'Pararedlichia is a subjective synonym of Eoredlichia'
'Parasajanaspis belongs to Redlichinidae'
'Parasolenopleura is a subjective synonym of Solenopleurina'
'Parasphaerexochus belongs to Cheiruridae'
'Paraszechuanella belongs to Leiostegiidae'
'Paratamdaspis belongs to Asaphidae'
'Paratamdaspis longiformis belongs to Paratamdaspis' according to Ergaliev 2001
'Paratermierella is a subjective synonym of Brevitermierella'
'Paratoernquistia belongs to Toernquistiidae'
'Paratollaspis is an objective synonym of Erbia'
'Paratretaspis belongs to Trinucleidae'
'Paratrinucleus belongs to Trinucleidae'
'Paratungusella belongs to Metadoxididae'
'Parawarburgella belongs to Proetidae'
'Parawarburgella taldyespensis belongs to Parawarburgella' according to Maksimova 1975
'Parayinites belongs to Yinitidae'
'Parayoungia belongs to Cheiruridae'
'Parehmania belongs to Alokistocaridae'
'Pareops belongs to Saukiandidae'
'Pareuloma belongs to Eulomidae'
'Parillaenus belongs to Illaenidae'
'Parisoceraurus belongs to Cheiruridae'
'Parkaspis belongs to Zacanthoididae'
'Parkesolithus belongs to Trinucleidae'
'Parvidumus belongs to Proetidae'
'Parvigena belongs to Tropidocoryphidae'
'Paryfenus belongs to Proetidae'
'Pateraspis belongs to Cheiruridae'
'Patomaspis belongs to Cheiruridae'
'Patomaspis pictus belongs to Patomaspis' according to Ogienko 1974
'Patronaspis belongs to Idahoiidae'
'Pauciella belongs to Pterocephaliidae'
'Pearylandia belongs to Marjumiidae'
'Peculicephalina belongs to Trilobita'
'Pedinaspis belongs to Pterocephaliidae'
'Pedinocephalina belongs to Alokistocaridae'
'Pedinocephalites belongs to Pterocephaliidae'
'Pedinocephalus belongs to Parabolinoididae'
'Pedinocoryphe belongs to Proetidae'
'Pedinopariops belongs to Phacopidae'
'Peichiashania belongs to Kaolishaniidae'
'Peishania belongs to Anomocarellidae'
'Peishanoides belongs to Anomocarellidae'
'Pelicephalus belongs to Pterocephaliidae'
'Pelitlina belongs to Acastidae'
'Peltabellia belongs to Bathyuridae'
'Peltocare belongs to Olenidae'
'Peltura belongs to Olenidae'
'Pelturina belongs to Olenidae'
'Pemphigaspis belongs to Catillicephalidae'
'Penarosa belongs to Nepeidae'
'Penchiopsis belongs to Asaphidae'
'Pennaia belongs to Calmoniidae'
'Pensacola belongs to Yunnanocephalidae'
'Pentagnostus is a subjective synonym of Ptychagnostus'
'Pentagonalia amouslekensis is recombined as Delgadella amouslekensis'
'Peracheilus belongs to Catillicephalidae'
'Perakaspis belongs to Tropidocoryphidae'
'Perakaspis (Bailielloides) belongs to Perakaspis' according to Kobayashi and Hamada 1972
'Perakaspis (Bailielloides) was reranked as Bailielloides and belongs to Proetidae'
'Perakaspis trapezoidalis belongs to Perakaspis' according to Kobayashi and Hamada 1972
'Peraspis belongs to Nileidae'
'Peratagnostus is a subjective synonym of Phaldagnostus'
'Perexigupyge belongs to Proetidae'
'Periomma belongs to Antagmidae'
'Periommella belongs to Ptychopariidae'
'Perioura is a subjective synonym of Modocia'
'Perirehaedulus belongs to Encrinuridae'
'Perischoclonus belongs to Styginidae'
'Perissopliomera belongs to Pliomeridae'
'Perissopyge belongs to Aldonaiidae'
'Permoproetus is a subjective synonym of Ditomopyge'
'Perneraspis belongs to Solenopleuridae'
'Perryus belongs to Encrinuridae'
'Perunaspis belongs to Lichidae'
'Pesaia belongs to Elviniidae'
'Petigurus belongs to Bathyuridae'
'Petrbokia belongs to Nileidae'
'Petruninaspis belongs to Marjumiidae'
'Phacopidella belongs to Phacopidae'
'Phacopidina belongs to Acastidae'
'Phacopina belongs to Calmoniidae'
'Phacopoidea belongs to Phacopida'
'Phacops (Acaste) downingiae macrops belongs to Phacops (Acaste) downingiae' according to Salter 1864
'Phacops (Acaste) downingiae macrops is recombined as Acastocephala macrops'
'Phacops (Boeckops) was reranked as Boeckops and belongs to Phacopidae'
'Phacops (Cryphops) was reranked as Cryphops and belongs to Phacopidae'
'Phacops (Omegops) was reranked as Omegops and belongs to Phacopidae'
'Phacops logani is recombined as Paciphacops logani' according to Maksimova 1972
'Phacops logani is recombined as Paciphacops logani'
'Phacops truncatocaudatus is recombined as Truncatometopus truncatocaudatus' according to Pillet 1960
'Phaeton is replaced by Phaetonides' according to Barrande 1847
'Phaeton is replaced by Phaetonides'
'Phaetonellus belongs to Tropidocoryphidae'
'Phaetonides is an objective synonym of Prionopeltis'
'Phalacroma belongs to Agnostidae'
'Phalagnostus belongs to Agnostidae'
'Phalangocephalus belongs to Dalmanitidae'
'Phanoptes belongs to Paradoxididae'
'Pharostoma is a subjective synonym of Prionocheilus'
'Pharostomatidae belongs to Phacopida'
'Pharostomina belongs to Pharostomatidae'
'Phaseolops [misspelled as Phaselops] belongs to Proetida' according to Fortey and Owens 1975
'Phaseolops belongs to Tropidocoryphidae'
'Phaseolops krafti belongs to Phaseolops' according to Šnajdr 1983
'Phaseolops krafti is recombined as Rokycanocoryphe krafti' according to Pribyl and Vanĕk 1987
'Philipsmithiana is a subjective synonym of Hollardops'
'Phillibole belongs to Proetidae'
'Phillibole (Cystispina) was reranked as Cystispina and belongs to Proetidae'
'Phillibole (Liobole) was reranked as Liobole and belongs to Proetidae'
'Phillibolina belongs to Proetidae'
'Philliboloides belongs to Proetidae'
'Phillipsia belongs to Proetidae'
'Phillipsia spatulata is recombined as Spatulina spatulata'
'Phillipsia verneuili belongs to Phillipsia' according to Barrande 1852
'Phillipsia verneuili is recombined as Dechenella verneuili' according to Kayser 1880
'Phillipsiidae is a subjective synonym of Proetidae'
'Phillipsinella belongs to Styginidae'
'Phillipsinellidae is a subjective synonym of Styginidae'
'Phoidagnostoides is a subjective synonym of Leiagnostus'
'Phoidagnostus belongs to Agnostina'
'Phoreotropis belongs to Pagodiidae'
'Phorocephala belongs to Telephinidae'
'Phylacops belongs to Cyclopygidae'
'Phylacteridae belongs to Ptychopariida'
'Phylacterus belongs to Phylacteridae'
'Phyllaspis belongs to Proetidae'
'Phyllaspis raniceps belongs to Phyllaspis' according to Richter 1863
'Physemataspis (Prophysemataspis) was reranked as Prophysemataspis and belongs to Encrinuridae'
'Pianaspis belongs to Papyriaspididae'
'Piaziella belongs to Ptychopariidae'
'Pilekia belongs to Pilekiidae'
'Piliolites belongs to Trilobita'
'Pilletina belongs to Acastidae'
'Piltonia belongs to Proetidae'
'Pinctus belongs to Dokimocephalidae'
'Pingluaspis is corrected as Pinglusapis and belongs to Ptychopariidae'
'Pingluia belongs to Solenopleuridae'
'Pingquania belongs to Damesellidae'
'Piochella [misspelled as Piochiella] belongs to Ptychopariidae'
'Pjatkovaspellus belongs to Anomocaridae'
'Placoparia belongs to Pliomeridae'
'Placoparina belongs to Cheiruridae'
'Placosema is a subjective synonym of Genevievella'
'Plaesiacomia belongs to Homalonotidae'
'Plagiolaria belongs to Phacopidae'
'Plagiura belongs to Ptychopariidae'
'Plagiurella is a subjective synonym of Plagiura'
'Planaspis belongs to Aldonaiidae'
'Planiscutellum belongs to Styginidae'
'Planocephalus belongs to Saukiandidae'
'Planodiscus is a subjective synonym of Parapagetia' according to Jell 1997
'Planodiscus patulus belongs to Planodiscus' according to Korobov 1980
'Planodiscus patulus is recombined as Parapagetia patulus' according to Jell 1997
'Planolimbus belongs to Ellipsocephalidae'
'Plasiaspis belongs to Encrinuridae'
'Platagnostus is a subjective synonym of Phalacroma'
'Platillaenus belongs to Illaenidae'
'Platyantyx belongs to Tropidocoryphidae'
'Platycalymene belongs to Calymenidae'
'Platycoryphe belongs to Homalonotidae'
'Platydiamesus belongs to Illaenuridae'
'Platyharpes is an objective synonym of Hibbertia'
'Platylichas (Rontrippia) was reranked as Rontrippia and belongs to Lichidae'
'Platylisania belongs to Lisaniidae'
'Platymetopus is replaced by Paralichas' according to Reed 1902
'Platymetopus is replaced by Paralichas'
'Platynotus is replaced by Arctinurus'
'Platypeltoides belongs to Nileidae'
'Platyscutellum belongs to Styginidae'
'Plebiellus belongs to Anomocarellidae'
'Plectasaphus belongs to Asaphidae'
'Plectrella belongs to Ptychaspididae'
'Plectrifer belongs to Rhyssometopidae'
'Plesionevadia belongs to Nevadiidae'
'Plethometopus is a subjective synonym of Plethopeltis'
'Plethopeltella belongs to Leiostegiidae'
'Plethopeltides belongs to Plethopeltidae'
'Plethopeltis belongs to Plethopeltidae'
'Plethopeltoides belongs to Plethopeltidae'
'Plicatolina belongs to Olenidae'
'Plicatolinella belongs to Olenidae'
'Pliomera belongs to Pliomeridae'
'Pliomera martelli is recombined as Pliomerina martelli'
'Pliomeraspis is an objective synonym of Pliomerina'
'Pliomerella belongs to Pliomeridae'
'Pliomerellus belongs to Trilobita'
'Pliomeridius belongs to Pliomeridae'
'Pliomerina belongs to Pliomeridae'
'Pliomeroides belongs to Pilekiidae'
'Pliomerops belongs to Pliomeridae'
'Plutonia is replaced by Plutonides'
'Plutonides belongs to Paradoxididae'
'Podoliproetus belongs to Proetidae'
'Podowrinella belongs to Pterygometopidae'
'Pogrebovites belongs to Panderiidae'
'Poletaevella belongs to Olenellina'
'Poliellaites belongs to Dolichometopidae'
'Poliellaspis belongs to Dolichometopidae'
'Poliellina belongs to Dolichometopidae'
'Polyariella belongs to Illaenuridae'
'Polycyrtaspis is corrected as Polycertaspis and belongs to Polycyrtaspididae'
'Polyeres is a nomen oblitum'
'Polypleuraspis belongs to Dolichometopidae'
'Ponumia is a subjective synonym of Aphelotoxon'
'Popigaia belongs to Dorypygidae'
'Poroscutellum belongs to Styginidae'
'Portaginus is a subjective synonym of Brongniartella'
'Portaginus robustus is recombined as Brongniartella robusta'
'Portentosus belongs to Remopleurididae'
'Porterfieldia belongs to Olenidae'
'Poshania belongs to Ordosiidae'
'Postfallotaspis belongs to Holmiidae'
'Poulsenella belongs to Ptychopariidae'
'Poulsenia belongs to Ptychopariidae'
'Pradesia belongs to Isocolidae'
'Pradoella belongs to Calymenidae'
'Praedechenella belongs to Proetidae'
'Praedechenella liniclivosa belongs to Praedechenella' according to Maksimova 1952
'Praepatokephalus belongs to Remopleurididae'
'Pragoproetus belongs to Proetidae'
'Prantlia belongs to Proetidae'
'Prehousia belongs to Pterocephaliidae'
'Presbynileus belongs to Asaphidae'
'Priceaspis belongs to Asaphidae'
'Fitzroyaspis is a subjective synonym of Priceaspis'
'Pricyclopyge belongs to Cyclopygidae'
'Primaspis belongs to Odontopleuridae'
'Primoriella belongs to Paradoxididae'
'Princetonella belongs to Dikelocephalidae'
'Prionocheilus belongs to Pharostomatidae'
'Prionopeltis belongs to Tropidocoryphidae'
'Prionopyge is an objective synonym of Onychopyge'
'Proagnostus belongs to Ammagnostidae'
'Proampyx belongs to Agraulidae'
'Proapatokephaloides belongs to Pterocephaliidae'
'Proapatokephalops belongs to Remopleurididae'
'Proasaphiscus belongs to Proasaphiscidae'
'Proaulacopleura is a subjective synonym of Aphelaspis'
'Proavus belongs to Solenopleuridae'
'Probilacunaspis belongs to Eulomidae'
'Probolichas belongs to Lichidae'
'Probolium is replaced by Neoprobolium'
'Probolops belongs to Calmoniidae'
'Probowmania belongs to Ptychopariidae'
'Probowmania (Mufushania) was reranked as Mufushania and belongs to Ptychopariidae'
'Probowmania (Mufushania) was reranked as Mufushania and belongs to Ptychopariidae'
'Proceratopyge belongs to Ceratopygidae'
'Prochuangia belongs to Pagodiidae'
'Prodalmanitina belongs to Diaphanometopidae'
'Prodalmanitina nikolayevi belongs to Prodalmanitina' according to Chugaeva 1968
'Prodamesella belongs to Trilobita'
'Prodiacoryphe belongs to Proetidae'
'Prodiacoryphe osmolskae belongs to Prodiacoryphe' according to Yuan 1988
'Prodontochile belongs to Dalmanitidae'
'Proehmaniella belongs to Alokistocaridae'
'Proerbia belongs to Dinesidae'
'Proetidella is a subjective synonym of Decoroproetus'
'Proetina belongs to Tropidocoryphidae'
'Proetocephalus belongs to Proetidae'
'Proetocephalus anceps belongs to Proetocephalus' according to Lütke 1977
'Proetopeltis belongs to Tropidocoryphidae'
'Proetus belongs to Proetidae'
'Proetus (Astroproetus) was reranked as Astroproetus and belongs to Proetidae'
'Proetus (Bohemiproetus) was reranked as Bohemiproetus and belongs to Proetidae'
'Clypoproetus is a subjective synonym of Astroproetus'
'Proetus (Cornuproetus) trautensteinensis is recombined as Xiphogonium trautensteinensis' according to Vanek and Valicek 2002
'Proetus (Crassiproetus) was reranked as Crassiproetus and belongs to Proetidae'
'Euproetus is an objective synonym of Proetus'
'Proetus (Gerastos) was reranked as Gerastos and belongs to Proetidae'
'Proetus (Neoproetus) was reranked as Neoproetus and belongs to Proetidae'
'Proetus (Piriproetus) was reranked as Piriproetus and belongs to Tropidocoryphidae'
'Proetus (Pribylia) was reranked as Pribylia and belongs to Tropidocoryphidae'
'Proetus (Pudoproetus) was reranked as Pudoproetus and belongs to Proetidae'
'Proetus (Tropidocoryphe) was reranked as Tropidocoryphe and belongs to Tropidocoryphidae'
'Warburgaspis is a subjective synonym of Decoroproetus'
'Proetus bohemicus is recombined as Bohemiproetus bohemicus'
'Proetus dillensis is recombined as Franconicabole dillensis'
'Proetus fallax belongs to Proetus' according to Barrande 1846
'Proetus girvanensis is recombined as Paraproetus girvanensis'
'Proetus intermedius is recombined as Interproetus intermedius' according to Šnajdr 1977
'Proetus listei is corrected as Proetus listeri and belongs to Proetus'
'Proetus loveni belongs to Proetus' according to Barrande 1846
'Proetus macrocephalus is recombined as Monodechenella macrocephala'
'Proetus pachydermatus is recombined as Pachyproetus pachydermatus' according to Lutke 1990
'Proetus parvigena is recombined as Parvigena parvigena'
'Proetus pulcher is recombined as Pulcherproetus pulcher' according to Lütke 1990
'Proetus rondeaui belongs to Proetus' according to Oehlert 1889
'Proetus rondeaui is recombined as Oehlertia rondeaui' according to Pillet 1973
'Proetus rondeaui is recombined as Oehlertaspis rondeaui' according to Pillet and Vanĕk 1974
'Proetus ryckholti is recombined as Ryckholtia ryckholti'
'Proetus ryckholti is corrected as Proetus ryckholtii and belongs to Proetus' according to Barrande 1846
'Prohedinella belongs to Olenidae'
'Prohedinia belongs to Papyriaspididae'
'Proichangia is a subjective synonym of Pararaia' according to Jell 1990
'Prokootenia belongs to Dorypygidae'
'Proliobole is a subjective synonym of Panibole'
'Proliostracus belongs to Ptychopariidae'
'Promegalaspides belongs to Asaphidae'
'Promegalaspides (Borogothus) was reranked as Borogothus and belongs to Asaphidae'
'Promesus is a subjective synonym of Macronoda'
'Proricephalus belongs to Ptychaspididae'
'Proromma belongs to Cheiruridae'
'Prosaukia belongs to Saukiidae'
'Proscharyia belongs to Asaphidae'
'Prosopiscus belongs to Prosopiscidae'
'Prospectatrix belongs to Cyclopygidae'
'Prostrix belongs to Encrinuridae'
'Prosymphysurus belongs to Dolichometopidae'
'Protacanthina belongs to Acastidae'
'Protagraulos belongs to Ellipsocephalidae'
'Protaitzehoia belongs to Damesellidae'
'Protemnites belongs to Elviniidae'
'Proteuloma belongs to Eulomidae'
'Protillaenus is a subjective synonym of Blountia'
'Protocalymene belongs to Calymenidae'
'Protocerauroides belongs to Cheiruridae'
'Protohedinia belongs to Ptychopariidae'
'Protolenella belongs to Ellipsocephalidae'
'Protolenella conica belongs to Protolenella' according to Qian and Yao 1974
'Protolenus belongs to Ellipsocephalidae'
'Protolloydolithus belongs to Trinucleidae'
'Protopeltura belongs to Olenidae'
'Protophillipsinella is a subjective synonym of Paraphillipsinella'
'Protopliomerella belongs to Pliomeridae'
'Protopliomerops belongs to Pliomeridae'
'Protopresbynileus belongs to Asaphidae'
'Protoptychopyge belongs to Asaphidae'
'Protoscutellum is a subjective synonym of Planiscutellum'
'Protostygina belongs to Styginidae'
'Protypus belongs to Dorypygidae'
'Prouktaspis belongs to Jakutidae'
'Proveedoria belongs to Alokistocaridae'
'Prozacanthoides belongs to Zacanthoididae'
'Pruvostinoides belongs to Ellipsocephalidae'
'Psalaspis belongs to Idahoiidae'
'Psalikilopsis belongs to Hystricuridae'
'Psalikilus belongs to Hystricuridae'
'Psephosthenaspis belongs to Bathyuridae'
'Pseudagnostina is a subjective synonym of Pseudagnostus'
'Pseudampyxina belongs to Raphiophoridae'
'Pseudanomocarina belongs to Proasaphiscidae'
'Arrhenaspis is a subjective synonym of Duibianaspis'
'Pseudasaphus limatus is recombined as Valdaites limatus' according to Balashova 1976
'Pseudatops belongs to Atopidae'
'Pseudichangia is a subjective synonym of Hsuaspis'
'Pseudoacrocephalites belongs to Trilobita' according to Courtessole and Pillet 1976
'Pseudoacrocephalites is replaced by Rosovaspis' according to Courtessole and Pillet 1976
'Pseudoacrocephalites belongs to Eulomidae'
'Pseudoalokistocare is a subjective synonym of Alokistocare'
'Pseudoasaphus belongs to Asaphidae'
'Pseudobarrandia is an objective synonym of Rokycania'
'Pseudobasilicus belongs to Asaphidae'
'Pseudobirmanites is a subjective synonym of Madygenia'
'Pseudocalymene belongs to Leiostegiidae'
'Pseudocheirurus belongs to Cheiruridae'
'Pseudoclelandia belongs to Trilobita'
'Pseudocryphaeus belongs to Acastidae'
'Pseudocybele belongs to Pliomeridae'
'Pseudocyclopyge is a nomen nudum' according to Ergaliev 1981
'Pseudodechenella belongs to Proetidae'
'Pseudodudu belongs to Proetidae'
'Pseudoerbia belongs to Dinesidae'
'Pseudoeteraspis belongs to Agraulidae'
'Pseudogriphasaphus belongs to Asaphidae'
'Pseudogygites belongs to Asaphidae'
'Pseudohysterolenus belongs to Ceratopygidae'
'Pseudohystricurus belongs to Dimeropygidae'
'Pseudokadyella belongs to Ellipsocephalidae'
'Pseudokainella belongs to Remopleurididae'
'Pseudokingstonia belongs to Cheilocephalidae'
'Pseudokoldinella belongs to Plethopeltidae'
'Pseudokoldinia belongs to Cheilocephalidae'
'Pseudokoldinioidia belongs to Missisquoiidae'
'Pseudolancastria is a subjective synonym of Lancastria'
'Pseudolenus belongs to Ellipsocephalidae'
'Pseudoliostracina is an objective synonym of Lioparia'
'Pseudolorenzella belongs to Lorenzellidae'
'Pseudomapania belongs to Mapaniidae'
'Pseudomegalaspis belongs to Asaphidae'
'Pseudomera belongs to Pliomeridae'
'Pseudomera kanoshensis is recombined as Kanoshia kanoshensis'
'Pseudomexicella belongs to Alokistocaridae'
'Pseudomonaspis is an objective synonym of Acidaspis'
'Pseudonileus is replaced by Protopresbynileus'
'Pseudonileus is an objective synonym of Hemibarrandia'
'Pseudoolenoides belongs to Bathyuridae'
'Pseudopaokannia belongs to Yinitidae'
'Pseudoperonopsis is a subjective synonym of Diplorrhina'
'Pseudopetigurus belongs to Isocolidae'
'Pseudophalacroma belongs to Ptychagnostidae'
'Pseudophillipsia belongs to Proetidae'
'Pseudoproetus belongs to Proetidae'
'Pseudoprotolenella belongs to Ellipsocephalidae'
'Pseudoptychoparia is an objective synonym of Yunnanocephalus'
'Pseudoptyocephalus belongs to Asaphidae'
'Pseudoresserops belongs to Chengkouaspididae'
'Pseudorhaptagnostus is a subjective synonym of Neoagnostus'
'Pseudosalteria belongs to Trilobita'
'Pseudosaratogia belongs to Dokimocephalidae'
'Pseudosarkia belongs to Trilobita'
'Pseudosaukia belongs to Elviniidae'
'Pseudosaukianda belongs to Saukiandidae'
'Pseudosolenoparia belongs to Solenopleuridae'
'Pseudosolenopleura belongs to Wuaniidae'
'Pseudospatulina belongs to Proetidae'
'Pseudospatulina belongs to Archegoninae' according to Hahn and Brauckmann 1989
'Pseudostygina belongs to Styginidae'
'Pseudotalbotina belongs to Lonchocephalidae'
'Pseudotermierella is a nomen nudum'
'Pseudotupolichas belongs to Lichidae'
'Pseudowaribole belongs to Proetidae'
'Pseudoyuepingia belongs to Ceratopygidae'
'Psilacella belongs to Cyclopygidae'
'Psilocara belongs to Olenidae'
'Psilocephalina belongs to Asaphidae'
'Psilocephalinella belongs to Nileidae'
'Psiloyuepingia is a subjective synonym of Tamdaspis'
'Psychopyge belongs to Acastidae'
'Ptarmigania belongs to Dolichometopidae'
'Ptarmiganoides belongs to Zacanthoididae'
'Pterocephalia belongs to Pterocephaliidae'
'Pterocephalidae is replaced by Pterocephaliidae'
'Petrocephaliidae is a misspelling of Pterocephaliidae'
'Pterocephalops belongs to Dikelocephalidae'
'Pterocoryphe belongs to Tropidocoryphidae'
'Pteroparia belongs to Tropidocoryphidae'
'Pterygometopidae belongs to Phacopida'
'Pterygometopus belongs to Pterygometopidae'
'Ptilillaenus belongs to Illaenidae'
'Acidusus is a subjective synonym of Ptychagnostus'
'Ptychaspis belongs to Ptychaspididae'
'Ptychocephalus is corrected as Ptyocephalus and belongs to Asaphidae'
'Ptychometopus belongs to Pharostomatidae'
'Ptychoparella belongs to Ptychopariidae'
'Ptychoparia belongs to Ptychopariidae'
'Ptychoparia intermedia is recombined as Changqingia intermedia' according to Zan 1992
'Ptychoparia theano belongs to Ptychoparia' according to Walcott 1905
'Ptychoparia theano is recombined as Emmrichella theano' according to Walcott 1911
'Ptychoparia theano is recombined as Lioparia theano' according to Zhang and Jell 1987
'Ptychoparioides is a subjective synonym of Ptychoparia'
'Ptychoparopsis belongs to Ellipsocephalidae'
'Ptychopleurites belongs to Pagodiidae'
'Ptychopyge belongs to Asaphidae'
'Ptychopyge aciculata is recombined as Valdaites aciculatus' according to Balashova 1976
'Ptychopyge aciculata is recombined as Valdaites aciculatus'
'Pugilator belongs to Remopleurididae'
'Pugionicauda belongs to Kingstoniidae'
'Pulcherproetus belongs to Proetidae'
'Pulchricapitus belongs to Pterocephaliidae'
'Pumilina belongs to Aldonaiidae'
'Punctaspis belongs to Trilobita'
'Punctularia is a subjective synonym of Ptychopleurites'
'Punillaspis belongs to Calmoniidae'
'Punka belongs to Bathyuridae'
'Pyraustocranium belongs to Telephinidae'
'Pytine belongs to Raphiophoridae'
'Pyttstrigis belongs to Idahoiidae'
'Qiaodiella belongs to Mayiellidae'
'Qiaotingaspis belongs to Mayiellidae'
'Qingkouia belongs to Yinitidae'
'Qingshuihella belongs to Elviniidae'
'Qingzhenaspis belongs to Zacanthoididae'
'Qinlingia is replaced by Qinlingialingia'
'Qinlingia henanensis is recombined as Qinlingialingia henanensis'
'Qinlingia magnoccipitis is recombined as Qinlingialingia magnoccipitis'
'Qinlingia transversa is recombined as Qinlingialingia transversa'
'Qinlingialingia belongs to Anomocaridae'
'Quadragnostus is a subjective synonym of Diplorrhina'
'Quadraticephalus is a subjective synonym of Changia'
'Quadratoproetus belongs to Tropidocoryphidae'
'Quebecaspis belongs to Lonchocephalidae'
'Quinquecosta belongs to Pliomeridae'
'Quitacetra belongs to Mapaniidae'
'Quitalia belongs to Mapaniidae'
'Quyuania belongs to Styginidae'
'Raaschella is a subjective synonym of Glaphyraspis'
'Raashellina belongs to Lonchocephalidae'
'Rabienops belongs to Phacopidae'
'Rabuloproetus belongs to Tropidocoryphidae'
'Radiaspis belongs to Odontopleuridae'
'Radiolichas belongs to Lichidae'
'Radioscutellum belongs to Styginidae'
'Radiurus belongs to Cheiruridae'
'Radnoria belongs to Brachymetopidae'
'Rampartaspis is a subjective synonym of Leptoplastides'
'Rananasus belongs to Bathyuridae'
'Randaynia belongs to Bathyuridae'
'Randicephalus belongs to Dikelocephalidae'
'Ranunculoproetus belongs to Tropidocoryphidae'
'Raphioampyx belongs to Raphiophoridae'
'Raphiophorus belongs to Raphiophoridae'
'Rasettaspis belongs to Illaenuridae'
'Rasettia belongs to Illaenuridae'
'Ratinkaspis belongs to Cheiruridae'
'Rawlinsella belongs to Bolaspididae'
'Raymondarges is a subjective synonym of Dicranopeltis' according to Tripp 1957
'Raymondarges is a subjective synonym of Dicranopeltis'
'Raymondaspis belongs to Styginidae'
'Raymondella belongs to Raphiophoridae'
'Raymondia is a misspelling of Raymondina'
'Raymondina belongs to Raymondinidae'
'Reacalymene belongs to Calymenidae'
'Realaspis belongs to Saukiandidae'
'Rectifrontinella belongs to Anomocaridae'
'Redlichaspis belongs to Lisaniidae'
'Redlichia (Pteroredlichia) was reranked as Pteroredlichia and belongs to Redlichiidae'
'Redlichops belongs to Redlichiidae'
'Reedaspis is an objective synonym of Raymondella'
'Reediella belongs to Proetidae'
'Reedocalymene belongs to Calymenidae'
'Reedolithus belongs to Trinucleidae'
'Reedops belongs to Phacopidae'
'Regina belongs to Ptychopariidae'
'Regius belongs to Ptychopariidae'
'Rejkocephalus belongs to Paradoxididae'
'Remipyga belongs to Cheiruridae'
'Remizites belongs to Olenidae'
'Remopleurella belongs to Remopleurididae'
'Remopleurides belongs to Remopleurididae'
'Remopleuridiella belongs to Remopleurididae'
'Remopleuridioides is a subjective synonym of Nileus'
'Renniella belongs to Calmoniidae'
'Repinaella belongs to Fallotaspididae'
'Reraspis belongs to Cheiruridae'
'Resimopsis belongs to Palaeolenidae'
'Resseraspis belongs to Illaenuridae'
'Resseria belongs to Trilobita'
'Resserops belongs to Saukiandidae'
'Resseropsis is a nomen nudum'
'Retamaspis belongs to Dalmanitidae'
'Reticuloharpes is a subjective synonym of Harpes'
'Reubenella belongs to Leiostegiidae'
'Reuscholithus belongs to Trinucleidae'
'Reussia is replaced by Reussiana' according to Snajdr 1987
'Reussiana belongs to Dalmanitidae'
'Rhadinopleura belongs to Alsataspididae'
'Rhaptagnostus is a subjective synonym of Pseudagnostus'
'Rhax is replaced by Rhaxeros'
'Rhaxeros belongs to Styginidae'
'Rhenogriffides belongs to Proetidae'
'Rhenops belongs to Acastidae'
'Rhinophacops belongs to Phacopidae'
'Rhinoreedops belongs to Phacopidae'
'Rhinotarion is a subjective synonym of Harpidella'
'Rhinotarion is a subjective synonym of Harpidella'
'Rhodotypiscus is a subjective synonym of Doryagnostus'
'Rhombampyx belongs to Raphiophoridae'
'Rhyssometropus belongs to Rhyssometopidae'
'Richardsonella belongs to Remopleurididae'
'Richardsonella laciniosa belongs to Richardsonella' according to Shergold 1972
'Richardsonella laciniosa is recombined as Mendosina laciniosa' according to Shergold 1975
'Richterarges belongs to Lichidae'
'Richteraspis belongs to Tropidocoryphidae'
'Richterella belongs to Proetidae'
'Richterops belongs to Saukiandidae'
'Rimouskia belongs to Solenopleuridae'
'Rinconia belongs to Ellipsocephalidae'
'Ritella belongs to Dokimocephalidae'
'Robergia belongs to Remopleurididae'
'Robergiella belongs to Remopleurididae'
'Rochaeva is a nomen nudum'
'Roksaspis belongs to Parabolinoididae'
'Rokycania is a subjective synonym of Illaenopsis'
'Rokycanocoryphe belongs to Tropidocoryphidae'
'Roncellia belongs to Dalmanitidae'
'Rondocephalus belongs to Dinesidae'
'Rongxiella belongs to Encrinuridae'
'Rorringtonia belongs to Rorringtoniidae'
'Rosovaspis is an objective synonym of Dolgeuloma'
'Rossaspis belongs to Pliomeridae'
'Rowia is a subjective synonym of Parehmania'
'Ruichengaspis belongs to Wuaniidae'
'Ruichengella is a subjective synonym of Plagiura'
'Ruzickaia is a subjective synonym of Conokephalina'
'Sacha belongs to Llanoaspididae'
'Sachaspis belongs to Anomocaridae'
'Sagavia belongs to Cyclopygidae'
'Sagitaspis belongs to Pagodiidae'
'Sagitoides belongs to Pagodiidae'
'Sailycaspis belongs to Ellipsocephalidae'
'Saimachia belongs to Dokimocephalidae'
'Salankanaspis belongs to Ptychopariidae'
'Saltaspis belongs to Olenidae'
'Salteria is a subjective synonym of Meneviella'
'Salterocoryphe belongs to Calymenidae'
'Salterolithus belongs to Trinucleidae'
'Ulricholithus is a subjective synonym of Broeggerolithus'
'Sambremeusaspis belongs to Phacopidae'
'Sanaschtykgolia belongs to Corynexochidae'
'Sanbernardaspis belongs to Asaphidae'
'Sandoveria belongs to Oryctocephalidae'
'Sangzhiscutellum belongs to Styginidae'
'Sanidopyge belongs to Acastidae'
'Sao belongs to Solenopleuridae'
'Saonella belongs to Kingstoniidae'
'Sapushania belongs to Redlichiidae'
'Sarassina belongs to Redlichiidae'
'Saratogia belongs to Idahoiidae'
'Sardaspis is a subjective synonym of Blayacina'
'Sardoredlichia belongs to Redlichiidae'
'Sarkia belongs to Sarkiidae'
'Sarkiidae belongs to Trilobita'
'Saukia belongs to Saukiidae'
'Saukiella belongs to Saukiidae'
'Saukioides belongs to Ptychaspididae'
'Scabrella belongs to Homalonotidae'
'Scabriscutellum belongs to Styginidae'
'Sceptaspis belongs to Pterygometopidae'
'Schaderthalaspis belongs to Proetidae'
'Schagonaria belongs to Paradoxididae'
'Schantungia belongs to Leiostegiidae'
'Scharyia belongs to Scharyiidae'
'Scharyiidae belongs to Proetida'
'Schistocephalus belongs to Palaeolenidae'
'Schistometopus belongs to Ptychopariidae'
'Schizophillipsia belongs to Proetidae'
'Schizophorus is a subjective synonym of Asaphus'
'Schizoproetina belongs to Proetidae'
'Schizoproetoides belongs to Proetidae'
'Schizoproetus belongs to Proetidae'
'Schizostylus belongs to Calmoniidae'
'Schmalenseeia belongs to Burlingiidae'
'Schoharia belongs to Dalmanitidae'
'Schopfaspis belongs to Alokistocaridae'
'Schoriecare belongs to Anomocaridae'
'Schoriella belongs to Anomocaridae'
'Schyilaspis belongs to Marjumiidae'
'Scinocephalus belongs to Remopleurididae'
'Scintilla belongs to Anomocaridae'
'Scopelochasmops belongs to Pterygometopidae'
'Scotiella belongs to Acastidae'
'Scotoharpes belongs to Harpetidae'
'Scottia is replaced by Ganovexopyge'
'Sculptaspis belongs to Remopleurididae'
'Sculptella belongs to Remopleurididae'
'Sculptoproetus belongs to Tropidocoryphidae'
'Scutellum belongs to Styginidae'
'Sdzuyella belongs to Holocephalinidae'
'Sdzuyomia belongs to Nevadiidae'
'Sectigena belongs to Ellipsocephalidae'
'Segmentagnostus is a subjective synonym of Corrugatagnostus'
'Seisonia belongs to Pilekiidae'
'Sekwiaspis belongs to Redlichinidae'
'Seleneceme belongs to Alsataspididae'
'Selenoharpes belongs to Harpetidae'
'Selenopeltis belongs to Odontopleuridae'
'Selenopeltoides belongs to Odontopleuridae'
'Selenoptychus belongs to Cyclopygidae'
'Selenoptychus rotundatus belongs to Selenoptychus' according to Hawle and Corda 1847
'Selenoptychus rotundatus is a subjective synonym of Heterocyclopyge pachycephala' according to Marek 1961
'Seletella is a subjective synonym of Onchonotellus'
'Seletoides belongs to Pagodiidae'
'Semadiscus belongs to Weymouthiidae'
'Semagnostus belongs to Agnostidae'
'Semicyclocephalus belongs to Plethopeltidae'
'Semiproetus belongs to Proetidae'
'Semisphaerocephalus belongs to Ptychopariidae'
'Senticucullus is a subjective synonym of Coronocephalus'
'Serksia is a nomen nudum'
'Serksioides is a nomen nudum'
'Serrania belongs to Bigotinidae'
'Sevillia belongs to Proetidae'
'Shabaella belongs to Oryctocephalidae'
'Shanghaia belongs to Dolichometopidae'
'Shanghaiaspis belongs to Solenopleuridae'
'Shantungia is corrected as Shangtungia and belongs to Damesellidae'
'Shatania belongs to Kueichowiidae'
'Shengia belongs to Lisaniidae'
'Shenjiawania belongs to Nileidae'
'Shergoldia belongs to Tsinaniidae'
'Shickshockia belongs to Marjumiidae'
'Shifangia belongs to Estaingiidae'
'Shilengshuia belongs to Antagmidae'
'Shipaiella belongs to Dorypygidae'
'Shitaia belongs to Idahoiidae'
'Shivelicus belongs to Corynexochidae'
'Shizhudiscus is a subjective synonym of Tsunyidiscus'
'Shumardia belongs to Shumardiidae'
'Shumardoella belongs to Shumardiidae'
'Shumardops belongs to Shumardiidae'
'Sibiriopeltis is a nomen nudum'
'Sichuanolenus belongs to Estaingiidae'
'Sigmakainella belongs to Remopleurididae'
'Sigmocheilus belongs to Pterocephaliidae'
'Signatops belongs to Phacopidae'
'Simaproetus belongs to Proetidae'
'Simulolenus is a subjective synonym of Olenus'
'Sinampyxina belongs to Raphiophoridae'
'Sinijanella belongs to Dolichometopidae'
'Sinobole belongs to Proetidae'
'Sinocrepicephalus belongs to Crepicephalidae'
'Sinocybele belongs to Encrinuridae'
'Sinocyrtoproetus belongs to Proetidae'
'Sinocyrtoproetus belongs to Proetidae' according to Yuan and Xiang 1998
'Sinoharpes is a subjective synonym of Dubhglasina'
'Sinolenus is a subjective synonym of Labradoria'
'Sinoparapilekia belongs to Pilekiidae'
'Sinosaukia belongs to Saukiidae'
'Sivovella belongs to Anomocaridae'
'Skelipyx belongs to Cheiruridae'
'Skemmatocare belongs to Proetidae'
'Skemmatopyge belongs to Proetidae'
'Skljarella belongs to Alsataspididae'
'Skreiaspis belongs to Agraulidae'
'Skryjagnostus belongs to Agnostina'
'Smeathenia is a subjective synonym of Salterolithus'
'Sokhretia belongs to Acastidae'
'Solenoparia bigranosa is recombined as Trachoparia bigranosa'
'Solenopleura belongs to Solenopleuridae'
'Solenopleuracea belongs to Ptychopariida' according to G. Geyer and E. Landing 2001
'Solenopleurella belongs to Solenopleuridae'
'Solenopleuridae belongs to Ptychopariida'
'Solenopleurina is an objective synonym of Herse'
'Solenopleuropsis belongs to Solenopleuridae'
'Solontzella belongs to Amgaspididae'
'Sombrerella belongs to Antagmidae'
'Songkania belongs to Aulacopleuridae'
'Songtaoia belongs to Hungaiidae'
'Songxites belongs to Dalmanitidae'
'Sonoraspis is a subjective synonym of Glossopleura'
'Soomaspis belongs to Nektaspida'
'Spathacalymene belongs to Calymenidae'
'Spatulina belongs to Proetidae'
'Spencella belongs to Ptychopariidae'
'Spencia belongs to Ptychopariidae'
'Spergenaspis belongs to Proetidae'
'Sphaerexochus belongs to Cheiruridae'
'Sphaerexochus hemicranium is recombined as Pseudosphaerexochus hemicranium'
'Sphaerocoryphe belongs to Cheiruridae'
'Sphaerometopus is a nomen nudum'
'Sphaerophthalmella belongs to Olenidae'
'Sphaerophthalmus belongs to Olenidae'
'Spinagnostus is a subjective synonym of Hypagnostus'
'Spinibole belongs to Proetidae'
'Spinibolops belongs to Proetidae'
'Spiniscutellum belongs to Styginidae'
'Spinodontochile is a subjective synonym of Zlichovaspis'
'Spinolimbella is a subjective synonym of Weberiphillipsia'
'Spinolimbella bella is recombined as Weberiphillipsia bella'
'Spinoredlichia is a subjective synonym of Pteroredlichia'
'Spirantyx belongs to Alsataspididae'
'Spizharaspis belongs to Trilobita'
'Spizharaspis rarus belongs to Spizharaspis' according to Ergaliev 2001
'Stapeleyella belongs to Trinucleidae'
'Staurocephalus belongs to Encrinuridae'
'Stauroholcus is a subjective synonym of Spencia'
'Stegnopsis belongs to Asaphidae'
'Stelckaspis belongs to Odontopleuridae'
'Stella belongs to Proasaphiscidae'
'Stenambon belongs to Pterocephaliidae'
'Stenoblepharum belongs to Tropidocoryphidae'
'Stenopareia belongs to Illaenidae'
'Stenopilus belongs to Plethopeltidae'
'Stenopilus convexus is recombined as Wanwanoglobus convexus'
'Stenorhachis belongs to Asaphidae'
'Stephanocare belongs to Damesellidae'
'Stephenaspis belongs to Zacanthoididae'
'Stigmacephaloides belongs to Parabolinoididae'
'Stigmacephalus belongs to Dikelocephalidae'
'Stigmadiscus belongs to Weymouthiidae'
'Stigmaspis belongs to Saukiidae'
'Stigmatoa belongs to Eulomidae'
'Stiktocybele belongs to Encrinuridae'
'Strenax (Sematiscus) fletcheri is recombined as Estaingia fletcheri'
'Strenax cerastes is recombined as Estaingia cerastes'
'Strenuaeva belongs to Ellipsocephalidae'
'Strenuella belongs to Ellipsocephalidae'
'Strettonia belongs to Dorypygidae'
'Strictagnostus belongs to Agnostidae'
'Strigambitus belongs to Pterocephaliidae'
'Strigigenalis belongs to Bathyuridae'
'Strotactinus belongs to Pliomeridae'
'Strotocephala belongs to Plethopeltidae'
'Struszia belongs to Encrinuridae'
'Struveaspis belongs to Phacopidae'
'Struveria belongs to Dalmanitidae'
'Stubblefieldia belongs to Cheiruridae'
'Stummiana belongs to Acastidae'
'Stygina belongs to Styginidae'
'Sudanomocarina belongs to Proasaphiscidae'
'Sukhanaspis belongs to Trilobita'
'Sulcatagnostus is a subjective synonym of Pseudagnostus'
'Sulcocephalus belongs to Dokimocephalidae'
'Suludella belongs to Conokephalinidae'
'Sunaspidella belongs to Sunaspididae'
'Sunina is an objective synonym of Anderssonella'
'Sunwaptia belongs to Ptychaspididae'
'Suriaspis belongs to Asaphidae'
'Svalbardites belongs to Olenidae'
'Svenax belongs to Peronopsidae'
'Sycophantia belongs to Cheiruridae'
'Symphysops belongs to Cyclopygidae'
'Symphysurina belongs to Nileidae'
'Symphysurus belongs to Nileidae'
'Synhomalonotus is a subjective synonym of Neseuretus'
'Synphoroides belongs to Dalmanitidae'
'Syspacephalus is a subjective synonym of Ptychoparella'
'Syspacheilus belongs to Marjumiidae'
'Szeaspis belongs to Proasaphiscidae'
'Szechuanaspis is a subjective synonym of Hebediscina'
'Szechuanaspis (Zhenbadiscus) belongs to Szechuanaspis' according to Zhang and Zhang 1980
'Zhenbadiscus is a subjective synonym of Hebediscina' according to Jell 1997
'Szechuanaspis longispinus belongs to Szechuanaspis' according to Qian and Yao 1974
'Szechuanaspis longispinus is recombined as Hebediscina longispinus' according to Jell 1997
'Szechuanella is replaced by Paraszechuanella'
'Szechuanolenus belongs to Estaingiidae'
'Tabatopygellina belongs to Dorypygidae'
'Tadakoustia belongs to Ellipsocephalidae'
'Taemasaspis belongs to Odontopleuridae'
'Taenicephalina belongs to Dokimocephalidae'
'Taenicephalites belongs to Aphelaspididae'
'Taenicephalus belongs to Parabolinoididae'
'Taenora belongs to Aphelaspididae'
'Tafnaspis is a subjective synonym of Carolinites'
'Tagenarella belongs to Llanoaspididae'
'Tagenarella eniseica belongs to Tagenarella' according to Lazarenko 1968
'Taidonorus is a nomen nudum'
'Taihangshania is replaced by Taihangshaniashania'
'Taihangshaniashania belongs to Damesellidae'
'Taihungshania belongs to Taihungshaniidae'
'Taishania belongs to Remopleurididae'
'Talbotina belongs to Lonchocephalidae'
'Talbotinella belongs to Olenidae'
'Tamaranella belongs to Aphelaspididae'
'Tamdaspis belongs to Ceratopygidae'
'Tangshanaspis is a subjective synonym of Missisquoia'
'Tangyaia is a subjective synonym of Lisogorites'
'Tankhella belongs to Proasaphiscidae'
'Taoyuania belongs to Hystricuridae'
'Tapinocalymene belongs to Calymenidae'
'Tarayagnostus is a subjective synonym of Machairagnostus'
'Tarayagnostus corrugatus is recombined as Machairagnostus corrugatus'
'Tarijactinoides belongs to Calmoniidae'
'Tarimella belongs to Shumardiidae'
'Tarricoia belongs to Nektaspida'
'Tarynaspis belongs to Namanoiidae'
'Tasagnostus is a subjective synonym of Diplagnostus'
'Tasmanaspis belongs to Hystricuridae'
'Tasmanaspis lewisi belongs to Tasmanaspis'
'Tasmanocephalus belongs to Missisquoiidae'
'Tatonaspis belongs to Illaenuridae'
'Tatulaspis belongs to Dokimocephalidae'
'Tavsenia belongs to Menomoniidae'
'Tawstockia belongs to Proetidae'
'Taxioura is a subjective synonym of Ogygopsis'
'Taynaella belongs to Proetidae'
'Taynaella insolita belongs to Taynaella' according to Spasskij 1989
'Tazemmourtia is a nomen nudum'
'Tchaiaspis belongs to Conocoryphidae'
'Tcherkesovia belongs to Proetidae'
'Tcherkesovia prima belongs to Tcherkesovia' according to Spassky 1989
'Tchernyshevioides belongs to Hebediscidae'
'Tchukeraspis belongs to Asaphidae'
'Tchuostachia belongs to Dokimocephalidae'
'Teichertops belongs to Phacopidae'
'Telaeomarrolithus belongs to Trinucleidae'
'Telephina belongs to Telephinidae'
'Telephus is replaced by Telephina'
'Tellerina belongs to Saukiidae'
'Temnoura belongs to Crepicephalidae'
'Tenuipeltis belongs to Styginidae'
'Terataspis belongs to Lichidae'
'Termieraspis belongs to Ellipsocephalidae'
'Termierella belongs to Ellipsocephalidae'
'Terranovella belongs to Lonchocephalidae'
'Terranovia belongs to Lichidae'
'Tersella belongs to Hystricuridae'
'Tesselacauda belongs to Pliomeridae'
'Tetinia belongs to Proetidae'
'Tetinia belongs to Warburgellinae' according to Adrain 1997
'Tetralichas is a subjective synonym of Amphilichas'
'Thalabaria belongs to Proetidae'
'Thaleops belongs to Styginidae'
'Theamataspis belongs to Styginidae'
'Thebanaspis belongs to Proetidae'
'Theodenisia belongs to Catillicephalidae'
'Theodensia belongs to Catillicephalidae'
'Thigriffides belongs to Proetidae'
'Tholifrons belongs to Diceratocephalidae'
'Tholus belongs to Agraulidae'
'Thomastus belongs to Styginidae'
'Thomondia belongs to Shumardiidae'
'Thompsonaspis is a subjective synonym of Parehmania'
'Thomsonaspis obscura is recombined as Parehmania obscura'
'Thoracocare belongs to Zacanthoididae'
'Thoralocolus belongs to Isocolidae'
'Thulincola belongs to Pharostomatidae'
'Thymurus belongs to Trilobita'
'Thysanopeltella belongs to Styginidae'
'Thysanopeltis belongs to Styginidae'
'Thysanopyge belongs to Asaphidae'
'Tibagya belongs to Calmoniidae'
'Timoraspis belongs to Proetidae'
'Tinaspis belongs to Leiostegiidae'
'Tingocephalus belongs to Kaolishaniidae'
'Tiresias belongs to Isocolidae'
'Toernquistia belongs to Toernquistiidae'
'Toernquistina belongs to Toernquistiidae'
'Tolanaspis belongs to Dorypygidae'
'Tolbinella belongs to Redlichiidae'
'Toletanaspis belongs to Dalmanitidae'
'Tollaspis belongs to Dinesidae'
'Tologoja is a subjective synonym of Sinodiscus'
'Tolstotchichaspis belongs to Plethopeltidae'
'Tomagnostella belongs to Ptychagnostidae'
'Tongshania is a subjective synonym of Douposiella'
'Tongxinaspis belongs to Dionididae'
'Tonkinella belongs to Oryctocephalidae'
'Toragnostus is a subjective synonym of Glaberagnostus'
'Torridella is a subjective synonym of Nixonella'
'Tosotychia is a subjective synonym of Prohedinia'
'Tostonia belongs to Eurekiidae'
'Townleyella belongs to Ptychopariidae'
'Toxochasmops belongs to Pterygometopidae'
'Toxotis belongs to Trilobita'
'Trachoparia belongs to Solenopleuridae'
'Trachycheilus belongs to Alokistocaridae'
'Trachylichas is an objective synonym of Dicranopeltis'
'Tramoria belongs to Remopleurididae'
'Trapelocera is an objective synonym of Ceratocephala'
'Trapezocephalina belongs to Trilobita'
'Trautensteinproetus is a subjective synonym of Xiphogonium'
'Trautensteinproetus verrucatus is recombined as Xiphogonium verrucatum' according to Vaněk and Valíček 2002
'Tretaspis belongs to Trinucleidae'
'Treveropyge belongs to Acastidae'
'Triangulaspis belongs to Ellipsocephalidae'
'Triangulina is a subjective synonym of Triangulaspis'
'Triarthrella belongs to Trilobita'
'Triarthroides belongs to Isocolidae'
'Triarthropsis belongs to Catillicephalidae'
'Triarthrus belongs to Olenidae'
'Tricopelta belongs to Pterygometopidae'
'Tricrepicephalidae belongs to Ptychopariida'
'Tricrepicephalus belongs to Tricrepicephalidae'
'Trigonaspis is replaced by Trigonyangaspis'
'Trigonaspis hujiaensis is recombined as Trigonyangaspis hujiaensis'
'Trigonoaspis is a subjective synonym of Lisogorites'
'Trigonocerca belongs to Asaphidae'
'Trigonocercella belongs to Asaphidae'
'Trigonyangaspis belongs to Ptychopariidae'
'Trilobus belongs to Trilobita' according to Brünnich 1781
'Trilobus caudatus is recombined as Dalmanites caudatus'
'Trilobus caudatus belongs to Trilobus' according to Brünnich 1781
'Trilobus caudatus is recombined as Dalmanites caudatus' according to Barrande 1852
'Trilobus dilatatus is recombined as Ogygiocaris dilatatus'
'Trimerocephalus belongs to Phacopidae'
'Trimerolichas belongs to Lichidae'
'Trimerus belongs to Homalonotidae'
'Trinia belongs to Corynexochidae'
'Trinodus belongs to Metagnostidae'
'Trinucleoides belongs to Dionididae'
'Trinucleus belongs to Trinucleidae'
'Triplagnostus is a subjective synonym of Ptychagnostus'
'Aristarius is a subjective synonym of Ptychagnostus'
'Trochurus belongs to Lichidae'
'Tropicoryphe belongs to Tropidocoryphidae'
'Tropidocare belongs to Proetidae'
'Tropidocoryphinae was reranked as the family Tropidocoryphidae and belongs to Proetida'
'Tropidopyge belongs to Ceratopygidae'
'Truncatometopus belongs to Pterygometopidae'
'Trymataspis belongs to Lonchocephalidae'
'Trypaulites belongs to Dalmanitidae'
'Tschernyschewiella belongs to Proetidae'
'Tsinania belongs to Tsinaniidae'
'Tsunyilichas is a subjective synonym of Dicranopeltis'
'Tuberaspis is a nomen nudum'
'Tukalandaspis belongs to Ptychopariidae'
'Tukalandaspis egens belongs to Tukalandaspis' according to Lazarenko 1968
'Tumicephalus belongs to Pterocephaliidae'
'Tumidulaspis belongs to Catillicephalidae'
'Tungtzuella belongs to Taihungshaniidae'
'Tuojiangella belongs to Catillicephalidae'
'Turantyx belongs to Cheiruridae'
'Turcopyge belongs to Acastidae'
'Turgicephalus belongs to Styginidae'
'Tuvanella belongs to Aldonaiidae'
'Tympanuella belongs to Alokistocaridae'
'Typhloniscus belongs to Calmoniidae'
'Typhloproetus belongs to Proetidae'
'Typhloproetus (Silesiops) was reranked as Silesiops and belongs to Proetidae'
'Uktaspis belongs to Jakutidae'
'Ullaspis belongs to Olenidae'
'Ulrichaspis belongs to Ptychopariidae'
'Ulugtella belongs to Illaenidae'
'Uncaspis belongs to Crepicephalidae'
'Unguliproetus belongs to Proetidae'
'Unicapeltis belongs to Styginidae'
'Uraloscutellum belongs to Styginidae'
'Urbanaspis belongs to Catillicephalidae'
'Uriarra belongs to Odontopleuridae'
'Urjungaspis belongs to Proasaphiscidae'
'Uromystrum belongs to Bathyuridae'
'Ursinella belongs to Zacanthoididae'
'Ushbaspis belongs to Redlichiidae'
'Usovinurus belongs to Anomocaridae'
'Usumunaspis belongs to Solenopleuridae'
'Utaspis belongs to Alokistocaridae'
'Utia belongs to Utiidae'
'Utiidae belongs to Ptychopariida'
'Uxunella belongs to Pterocephaliidae'
'Valdaites belongs to Asaphidae'
'Valenagnostus belongs to Agnostina'
'Validaspis belongs to Palaeolenidae'
'Valongia belongs to Cheiruridae'
'Valtorresia belongs to Idahoiidae'
'Vandergrachtia belongs to Proetidae'
'Vanuxemella belongs to Zacanthoididae'
'Varanella belongs to Raymondinidae'
'Variopelta belongs to Ptychopariidae'
'Varvia belongs to Nileidae'
'Verditerrina belongs to Menomoniidae'
'Verkholenella belongs to Asaphiscidae'
'Vermontella belongs to Ptychopariidae'
'Vernaculina belongs to Cedariidae'
'Vicinopeltis is an objective synonym of Vicinoproetus'
'Victorispina belongs to Pilekiidae'
'Vidria belongs to Proetidae'
'Vinicella belongs to Paradoxididae'
'Vistoia is a subjective synonym of Vanuxemella'
'Vittaella belongs to Proetidae'
'Vittaella vitta belongs to Vittaella' according to Alberti 1976
'Vogdesia belongs to Asaphidae'
'Volkops belongs to Pterygometopidae'
'Volkops volki belongs to Volkops' according to Struve 1959
'Volocephalina belongs to Ptychopariidae'
'Volonellus belongs to Aldonaiidae'
'Wagnerispina belongs to Proetidae'
'Waideggula belongs to Proetidae'
'Waisfeldaspis belongs to Styginidae'
'Walcottaspis belongs to Dikelocephalidae'
'Wallacia belongs to Encrinuridae'
'Walliserops belongs to Acastidae'
'Wandelella belongs to Papyriaspididae'
'Wangcunia belongs to Papyriaspididae'
'Wangzishia belongs to Yunnanocephalidae'
'Wanliangtingia is a subjective synonym of Apatokephalops'
'Wanshania belongs to Ordosiidae'
'Warburgella belongs to Proetidae'
'Podolites is replaced by Rugulites'
'Warburgella (Rugulites) was reranked as Rugulites and belongs to Proetidae'
'Waribole belongs to Proetidae'
'Weania belongs to Proetidae'
'Weberides is a subjective synonym of Paladin'
'Weberiphillipsia belongs to Proetidae'
'Weberopeltis belongs to Styginidae'
'Weeksina belongs to Lonchocephalidae'
'Weijiaspis belongs to Ptychopariidae'
'Welleraspis belongs to Catillicephalidae'
'Wenkchemnia is a subjective synonym of Bathyuriscus'
'Wentsuia belongs to Changshaniidae'
'Westergaardella belongs to Conokephalinidae'
'Westergaardia belongs to Olenidae'
'Westergaardites belongs to Olenidae'
'Westonaspis belongs to Phylacteridae'
'Weyeraspis belongs to Proetidae'
'Whittakerites belongs to Cheiruridae'
'Whittardolithus belongs to Trinucleidae'
'Whittingtonella belongs to Dokimocephalidae'
'Whittingtonia belongs to Odontopleuridae'
'Wilbernia belongs to Idahoiidae'
'Wilcoxaspis belongs to Ptychaspididae'
'Wilsonarella belongs to Dokimocephalidae'
'Winiskia belongs to Proetidae'
'Winterbergia belongs to Proetidae'
'Witryides belongs to Proetidae'
'Wolayella belongs to Tropidocoryphidae'
'Wongia belongs to Avoninidae'
'Wuhuia belongs to Dokimocephalidae'
'Wujiajiania belongs to Olenidae'
'Wutingshania belongs to Anomocaridae'
'Wuxunaspis is a subjective synonym of Xingrenaspis'
'Xanionurus is a subjective synonym of Radiaspis'
'Xela belongs to Redlichiidae'
'Xenadoche belongs to Proetidae'
'Xenasaphus belongs to Asaphidae'
'Xenoboloides belongs to Proetidae'
'Xenocheilos belongs to Norwoodiidae'
'Xenocybe belongs to Proetidae'
'Xenocyclopyge belongs to Cyclopygidae'
'Xenodechenella belongs to Proetidae'
'Xenodechenella chacomaensis belongs to Xenodechenella'
'Xenoredlichia belongs to Redlichiidae'
'Xenostegium belongs to Asaphidae'
'Xiangqianaspis belongs to Antagmidae'
'Xiangzhongella belongs to Proetidae'
'Xilingxia is a subjective synonym of Binodaspis'
'Xingrenaspis belongs to Ptychopariidae'
'Xinjiangia belongs to Raphiophoridae'
'Xiphogonium belongs to Tropidocoryphidae'
'Xishuiella is a subjective synonym of Drepanuroides'
'Xishuiella is a subjective synonym of Drepanuroides' according to W. Zhang et al. 1997
'Xiuqiella [misspelled as Xuigiella] belongs to Corynexochida' according to Sepkoski 2002
'Xiuqiella belongs to Chengkouiidae'
'Xiushuilithus belongs to Trinucleidae'
'Xylabion belongs to Cheiruridae'
'Xyoeax belongs to Styginidae'
'Xystocrania belongs to Cheiruridae'
'Xystridura belongs to Xystridurinae'
'Yabeia belongs to Solenopleuridae'
'Yanhaoia [misspelled as Yankaoia] belongs to Pterygometopidae'
'Yanshanaspis belongs to Proetidae'
'Yanshanaspis yanshanensis belongs to Yanshanaspis' according to Luo and Jiang 1985
'Yeshanaspis belongs to Ellipsocephalidae'
'Yichangaspis belongs to Proetidae'
'Yichangaspis yichangensis belongs to Yichangaspis' according to Xiang and Zhou 1987
'Yiliangellina belongs to Gigantopygidae'
'Yinganaspis belongs to Shumardiidae'
'Yinites belongs to Yinitidae'
'Yohoaspis belongs to Ptychopariidae'
'Yongwolia belongs to Anomocaridae'
'Yorkella belongs to Redlichiidae'
'Yosimuraspis belongs to Remopleurididae'
'Youngia belongs to Cheiruridae'
'Yuehsienszella belongs to Antagmidae'
'Yuepingia is a subjective synonym of Haniwoides'
'Yuknessaspis belongs to Ptychopariidae'
'Yukonaspis belongs to Catillicephalidae'
'Yukonia belongs to Yukoniidae'
'Yukonides belongs to Yukoniidae'
'Yumenaspis belongs to Alsataspididae'
'Yunnanaspidella belongs to Yinitidae'
'Yunnanaspis belongs to Yinitidae'
'Yunnanocephalidae belongs to Ptychopariida'
'Yunnanocephalus belongs to Yunnanocephalidae'
'Yurakia belongs to Illaenuridae'
'Zacanthoides belongs to Zacanthoididae'
'Zacanthopsis belongs to Zacanthoididae'
'Zacompsus belongs to Alsataspididae'
'Zaplaops belongs to Phacopidae'
'Zazvorkaspis belongs to Cheiruridae'
'Zbirovia belongs to Illaenidae'
'Zdicella belongs to Illaenidae'
'Zeliszkella belongs to Dalmanitidae'
'Zetaproetus belongs to Tropidocoryphidae'
'Zeteagnostus is a subjective synonym of Ptychagnostus'
'Zethus rex belongs to Zethus' according to Nieskowski 1857
'Zethus rex is recombined as Cybelella rex' according to Reed 1928
'Zethus rex is recombined as Atractopyge rex' according to Hennigsmoen 1959
'Zetillaenus belongs to Illaenidae'
'Zhegangula belongs to Proetidae'
'Zhenbaspis belongs to Chengkouiidae'
'Zhenganites belongs to Asaphidae'
'Zhifangia is a subjective synonym of Pudoproetus'
'Zhujia belongs to Tsinaniidae'
'Zhuozishania is a subjective synonym of Lioparella'
'Zhuxiella is a subjective synonym of Hsuaspis'
'Zigzuella is a nomen dubium'
'Zlichovaspis belongs to Dalmanitidae'
'Zuninaspis belongs to Asaphidae'