Opinions from A. Williams et al. 2000

  • 'Aberia belongs to Rhactorthidae'
  • 'Aboriginella belongs to Lingulellotretidae'
  • 'Absenticosta belongs to Plicatiferini'
  • 'Acanthalosia belongs to Dasyalosiinae'
  • 'Acanthambonia belongs to Siphonotretidae'
  • 'Acanthatia belongs to Araksalosiinae'
  • 'Acanthocosta belongs to Tolmatchoffiini'
  • 'Acanthocrania belongs to Craniidae'
  • 'Acanthoplecta belongs to Levitusini'
  • 'Acanthoproductus belongs to Semiproductini'
  • 'Acanthorthis belongs to Platystrophiidae'
  • 'Acanthotoechia belongs to Polytoechiidae'
  • 'Acareorthis belongs to Chileidae'
  • 'Acculina belongs to Leptellininae'
  • 'Achunoproductus is a subjective synonym of Schrenkiella'
  • 'Acosarina belongs to Schizophoriidae'
  • 'Acritosia belongs to Teguliferininae'
  • 'Acrosaccus belongs to Disciniidae'
  • 'Acrothele belongs to Acrothelinae'
  • 'Acrothelidae belongs to Acrotheloidea'
  • 'Acrothelinae belongs to Acrothelidae'
  • 'Acrotheloidea belongs to Lingulida'
  • 'Acrothyra belongs to Acrotretidae'
  • 'Acrotreta belongs to Acrotretidae'
  • 'Acrotretacea is replaced by Acrotretoidea'
  • 'Acrotretella belongs to Torynelasmatidae'
  • 'Acrotretida belongs to Lingulata'
  • 'Acrotretidae belongs to Acrotretoidea'
  • 'Acrotretoidea belongs to Acrotretida'
  • 'Actinomena belongs to Strophomeninae'
  • 'Adairia is a subjective synonym of Inflatia'
  • 'Adectorhynchinae belongs to Areostrophiidae'
  • 'Adectorhynchus belongs to Adectorhynchinae'
  • 'Adensu belongs to Adensuidae'
  • 'Adensuidae belongs to Trimerelloidea'
  • 'Adiaphragma is a subjective synonym of Leptagonia'
  • 'Admixtella belongs to Polytoechiidae'
  • 'Admodorugosus belongs to Levitusini'
  • 'Adriana belongs to Poikilosakinae'
  • 'Aegiria belongs to Aegiromeninae'
  • 'Aegiria (Epelidoaegiria) was reranked as Epelidoaegiria and belongs to Aegiromeninae'
  • 'Aegiromeninae belongs to Xenambonitidae'
  • 'Aegironetes is a subjective synonym of Aegiria'
  • 'Aesopomum belongs to Areostrophiinae'
  • 'Agelesia belongs to Agelesiinae'
  • 'Agelesiinae belongs to Aulostegidae'
  • 'Agramatia belongs to Rhytialosiinae'
  • 'Agyrekia belongs to Kutorginidae'
  • 'Ahtiella belongs to Ahtiellinae'
  • 'Ahtiellinae belongs to Taffiidae'
  • 'Airtonia belongs to Airtoniinae'
  • 'Airtoniinae belongs to Anopliidae'
  • 'Akatchania belongs to Anidanthinae'
  • 'Akelina belongs to Plectambonitinae'
  • 'Akmolina belongs to Ephippelasmatidae'
  • 'Aktassia belongs to Acrotretidae'
  • 'Alatoproductus belongs to Sentosiini'
  • 'Alatorthotetina belongs to Meekellinae'
  • 'Aldanotreta belongs to Cryptotretidae'
  • 'Alexenia belongs to Spyridiophorini'
  • 'Alichovia belongs to Siphonotretidae'
  • 'Alimbella belongs to Anomalorthidae'
  • 'Alisina belongs to Trematobolidae'
  • 'Alitaria belongs to Paramarginiferini'
  • 'Allanetes belongs to Notiochonetinae'
  • 'Altaeorthis is a subjective synonym of Dolerorthis'
  • 'Altaestrophia is a subjective synonym of Leptodontella'
  • 'Ambardella is a subjective synonym of Pleurorthis'
  • 'Ambonorthella belongs to Rhipidomellinae'
  • 'Ametoria belongs to Juresaniini'
  • 'Amictocracens belongs to Acrotretidae'
  • 'Amosina belongs to Strophochonetinae'
  • 'Amphistrophia belongs to Amphistrophiinae'
  • 'Amphistrophiella was reranked as Amphistrophia (Amphistrophiella) and belongs to Amphistrophia'
  • 'Amphistrophiidae belongs to Strophomenoidea'
  • 'Amphistrophiinae belongs to Amphistrophiidae'
  • 'Amphistrophiella (Amsdenostrophiella) is a subjective synonym of Amphistrophia (Amphistrophiella)'
  • 'Anabolotreta belongs to Acrotretidae'
  • 'Anatreta is a subjective synonym of Pomeraniotreta'
  • 'Anchigonites belongs to Gonambonitidae'
  • 'Ancistrocrania belongs to Craniidae'
  • 'Ancylostrophia is a subjective synonym of Teichostrophia'
  • 'Andalucinetes belongs to Strophochonetinae'
  • 'Andobolus belongs to Problematica'
  • 'Anechophragma is a subjective synonym of Calyptolepta'
  • 'Anechophragma rarum is recombined as Calyptolepta rarum'
  • 'Anelotreta belongs to Acrotretidae'
  • 'Anemonaria belongs to Paucispiniferini'
  • 'Angulotreta belongs to Acrotretidae'
  • 'Angusticardinia belongs to Angusticardiniidae'
  • 'Angusticardiniidae belongs to Dalmanelloidea'
  • 'Anidanthinae belongs to Linoproductidae'
  • 'Anidanthus belongs to Anidanthinae'
  • 'Anisopleurella belongs to Sowerbyellinae'
  • 'Anomaloglossa belongs to Obolinae'
  • 'Anomalorthidae belongs to Orthoidea'
  • 'Anomalorthis belongs to Anomalorthidae'
  • 'Anoplia belongs to Anopliinae'
  • 'Anopliella belongs to Anopliinae'
  • 'Anopliidae belongs to Chonetoidea'
  • 'Anopliinae belongs to Anopliidae'
  • 'Anopliopsis belongs to Anopliinae'
  • 'Anoptambonites belongs to Hesperomenidae'
  • 'Ansehia belongs to Cooperininae'
  • 'Antiquatonia belongs to Retariini'
  • 'Anx belongs to Glossellinae'
  • 'Apatobolus belongs to Obolinae'
  • 'Apatomorpha belongs to Palaeostrophomeninae'
  • 'Apatoskenidioides is a nomen dubium'
  • 'Aphanomena is a subjective synonym of Eostropheodonta'
  • 'Aphelotreta belongs to Acrotretidae'
  • 'Apheoorthina belongs to Eoorthidae'
  • 'Apheoorthis belongs to Eoorthidae'
  • 'Apicilirella is a subjective synonym of Xystostrophia'
  • 'Apollonorthis belongs to Plectorthidae'
  • 'Apomatella belongs to Clitambonitidae'
  • 'Aporthophyla belongs to Taffiinae'
  • 'Aporthophylina belongs to Taffiinae'
  • 'Apsilingula belongs to Lingulidae'
  • 'Apsocalymma belongs to Orthotetidae'
  • 'Apsotreta belongs to Acrotretidae'
  • 'Araksalosia belongs to Araksalosiinae'
  • 'Araksalosiidae belongs to Strophalosioidea'
  • 'Araksalosiinae belongs to Araksalosiidae'
  • 'Araxilevis belongs to Tyloplectini'
  • 'Arbizustrophia belongs to Strophodontidae'
  • 'Archaeorthis belongs to Nanorthidae'
  • 'Archaiosteges belongs to Echinosteginae'
  • 'Archeochonetes belongs to Strophochonetinae'
  • 'Articalosia is a misspelling of Arcticalosia'
  • 'Arcticalosia belongs to Dasyalosiinae'
  • 'Arctitreta belongs to Streptorhynchinae'
  • 'Arctireta is a misspelling of Arctitreta'
  • 'Arctochonetes belongs to Rugosochonetinae'
  • 'Arctohedra belongs to Arctohedridae'
  • 'Arctohedridae belongs to Protorthoidea'
  • 'Arcualla was reranked as Isorthis (Arcualla) and belongs to Isorthis'
  • 'Arcuaminetes belongs to Caenanopliinae'
  • 'Ardiviscus belongs to Leioproductini'
  • 'Ardmosteges belongs to Teguliferininae'
  • 'Arenorthis belongs to Heterorthidae'
  • 'Areostrophia belongs to Areostrophiinae'
  • 'Areostrophiidae belongs to Chilidiopsoidea'
  • 'Areostrophiinae belongs to Areostrophiidae'
  • 'Argentiproductus belongs to Productinini'
  • 'Artimyctella belongs to Problematica'
  • 'Artiotreta belongs to Scaphelasmatidae'
  • 'Aseptella belongs to Plicatiferini'
  • 'Aseptonetes belongs to Devonochonetinae'
  • 'Asioproductus is a subjective synonym of Transennatia'
  • 'Askepasma belongs to Cryptotretidae'
  • 'Asperlinus belongs to Auriculispininae'
  • 'Aspinosella is a subjective synonym of Kutorginella'
  • 'Astraborthis belongs to Anomalorthidae'
  • 'Asturistrophia was reranked as Strophodonta (Asturistrophia) and belongs to Strophodonta'
  • 'Asymmetrochonetes belongs to Strophochonetinae'
  • 'Asymphylotoechia belongs to Polytoechiidae'
  • 'Atelelasma belongs to Clitambonitidae'
  • 'Atelelasmoidea belongs to Gonambonitidae'
  • 'Atelestegastus belongs to Cooperininae'
  • 'Athyridida belongs to Rhynchonellata'
  • 'Atlantida belongs to Plectorthidae'
  • 'Auchmerella belongs to Donalosiinae'
  • 'Aulacella belongs to Rhipidomellinae'
  • 'Aulacophoria belongs to Schizophoriidae'
  • 'Aulacorhynchus is replaced by Isogramma'
  • 'Aulie belongs to Hesperomenidae'
  • 'Aulonotreta belongs to Aulonotretidae'
  • 'Aulonotretidae belongs to Linguloidea'
  • 'Auloprotonia belongs to Dictyoclostinae'
  • 'Aulosteges belongs to Aulosteginae'
  • 'Aulostegidae belongs to Aulostegoidea'
  • 'Aulosteginae belongs to Aulostegidae'
  • 'Aulostegoidea belongs to Strophalosiidina'
  • 'Auricolispina is a misspelling of Auriculispina'
  • 'Auriculispina belongs to Auriculispininae'
  • 'Auriculispininae belongs to Monticuliferidae'
  • 'Austinella belongs to Plaesiomyinae'
  • 'Australosia belongs to Donalosiinae'
  • 'Australostrophia belongs to Strophochonetinae'
  • 'Austrohedra belongs to Eoorthidae'
  • 'Austronoplia belongs to Retichonetinae'
  • 'Avonia belongs to Avoniini'
  • 'Avonia (Quasiavonia) was reranked as Quasiavonia and belongs to Avoniini'
  • 'Avoniini belongs to Overtoniinae'
  • 'Babina belongs to Strophochonetinae'
  • 'Bagnorthis is a subjective synonym of Onniella'
  • 'Bagrasia is a subjective synonym of Ericiatia'
  • 'Bagrasiini belongs to Sentosiinae'
  • 'Bailliena belongs to Horridoniini'
  • 'Baissalosteges belongs to Echinosteginae'
  • 'Bajanhongorella belongs to Furcitellinae'
  • 'Bajanorthis is a nomen dubium'
  • 'Balakhonia belongs to Linoproductinae'
  • 'Balkhasheconcha belongs to Waagenoconchini'
  • 'Bancroftina belongs to Dalmanellinae'
  • 'Bandoproductus belongs to Linoproductinae'
  • 'Barbaestrophia belongs to Leptostrophiidae'
  • 'Barbarorthis belongs to Hesperorthidae'
  • 'Barbatulella belongs to Obolinae'
  • 'Barroisella belongs to Lingulidae'
  • 'Barunkhuraya belongs to Avoniini'
  • 'Bathymyonia belongs to Juresaniini'
  • 'Baturria belongs to Proschizophoriidae'
  • 'Bekkeromena was reranked as Kiaeromena (Bekkeromena) and belongs to Kiaeromena'
  • 'Beleutella belongs to Gigantoproductini'
  • 'Bellaclathrus belongs to Buxtoniini'
  • 'Bellimurina belongs to Furcitellinae'
  • 'Bibatiola belongs to Paramarginiferini'
  • 'Bicarinatina belongs to Pseudolingulidae'
  • 'Bicia belongs to Obolellidae'
  • 'Bicuspina belongs to Triplesiidae'
  • 'Biernatia belongs to Biernatidae'
  • 'Biernatidae belongs to Acrotretoidea'
  • 'Biernatium belongs to Mystrophoridae'
  • 'Billingsella belongs to Billingsellidae'
  • 'Billingsellida belongs to Strophomenata'
  • 'Billingsellidae belongs to Billingselloidea'
  • 'Billingsellidina belongs to Billingsellida'
  • 'Billingselloidea belongs to Billingsellidina'
  • 'Bilobia belongs to Leptestiidae'
  • 'Bimuria belongs to Bimuriidae'
  • 'Bimuriidae belongs to Plectambonitoidea'
  • 'Biparetis belongs to Furcitellinae'
  • 'Bistramia belongs to Linguloidea'
  • 'Blyskavomena is a subjective synonym of Dactylogonia'
  • 'Bohemiella belongs to Bohemiellidae'
  • 'Bohemiellidae belongs to Orthoidea'
  • 'Boicinetes belongs to Chonetinae'
  • 'Bojarinovia belongs to Naukatidae'
  • 'Bojodouvillina belongs to Protodouvillininae'
  • 'Bomina belongs to Botsfordiidae'
  • 'Boonderella is a subjective synonym of Phaceloorthis'
  • 'Boonderella fasciculata is recombined as Phaceloorthis fasciculata'
  • 'Borua belongs to Ahtiellinae'
  • 'Bothrionia belongs to Paramarginiferini'
  • 'Bothrostegium belongs to Streptorhynchinae'
  • 'Boticium belongs to Draboviinae'
  • 'Botsfordia belongs to Botsfordiidae'
  • 'Botsfordiidae belongs to Acrotheloidea'
  • 'Boucotstrophia belongs to Strophodontidae'
  • 'Bowanorthis belongs to Wangyuiidae'
  • 'Bozshakolia belongs to Ceratretidae'
  • 'Brachymimulus belongs to Triplesiidae'
  • 'Brachyprion belongs to Leptostrophiidae'
  • 'Bracteoleptaena belongs to Leptaeninae'
  • 'Brahimorthis belongs to Eoorthidae'
  • 'Brandysia belongs to Cremnorthidae'
  • 'Brasilioproductus belongs to Tolmatchoffiini'
  • 'Breileenia belongs to Breileeniini'
  • 'Breileeniini belongs to Marginiferinae'
  • 'Brevipelta belongs to Obolellidae'
  • 'Brochocarina belongs to Orthotetidae'
  • 'Broeggeria belongs to Elkaniidae'
  • 'Bulahdelia belongs to Levipustulini'
  • 'Buntoxia belongs to Juresaniini'
  • 'Burovia belongs to Horridoniini'
  • 'Buxtonia belongs to Buxtoniini'
  • 'Buxtoniella belongs to Waagenoconchini'
  • 'Buxtoniinae belongs to Productidae'
  • 'Buxtoniini belongs to Buxtoniinae'
  • 'Buxtonioides belongs to Buxtoniini'
  • 'Bynguanoia belongs to Naukatidae'
  • 'Bystromena belongs to Glyptomeninae'
  • 'Cacemia belongs to Heterorthidae'
  • 'Cactosteges belongs to Rhamnariinae'
  • 'Caenanoplia belongs to Caenanopliinae'
  • 'Caenanopliinae belongs to Anopliidae'
  • 'Caenotreta is a subjective synonym of Opsiconidion'
  • 'Caeroplecia belongs to Triplesiidae'
  • 'Calliomarginatia is a subjective synonym of Kutorginella'
  • 'Calliprotonia belongs to Calliprotoniini'
  • 'Calliprotoniini belongs to Echinoconchinae'
  • 'Callytharrella belongs to Dictyoclostinae'
  • 'Calyptolepta belongs to Grorudiidae'
  • 'Campylorthis belongs to Plaesiomyinae'
  • 'Canalilatus belongs to Zhanatellidae'
  • 'Cancrinella belongs to Grandaurispininae'
  • 'Cancrinelloides belongs to Auriculispininae'
  • 'Canthylotreta belongs to Acrotretidae'
  • 'Capillomesolobinae belongs to Rugosochonetidae'
  • 'Capillomesolobus belongs to Capillomesolobinae'
  • 'Capillonia belongs to Svalbardiinae'
  • 'Caplinoplia belongs to Caenanopliinae'
  • 'Cardinocrania belongs to Lyttoniinae'
  • 'Caricula belongs to Paucispiniferini'
  • 'Carinastrophia belongs to Areostrophiinae'
  • 'Cariniferella belongs to Cortezorthinae'
  • 'Carlinia belongs to Productini'
  • 'Carringtonia belongs to Rugaurini'
  • 'Casquella belongs to Glossellinae'
  • 'Castellaroina belongs to Leptostrophiidae'
  • 'Cathaysia belongs to Paramarginiferini'
  • 'Caucasiproductinae belongs to Sentosiidae'
  • 'Caucasiproductus belongs to Caucasiproductinae'
  • 'Caucasoproductinae is replaced by Paucispiniferini'
  • 'Caucasoproductus belongs to Paucispiniferini'
  • 'Cedulia is a subjective synonym of Rhyssochonetes'
  • 'Celdobolus belongs to Siphonotretidae'
  • 'Celebetes belongs to Chonetellini'
  • 'Celidocrania is a subjective synonym of Acanthocrania'
  • 'Celtanoplia belongs to Caenanopliinae'
  • 'Ceocypea belongs to Epiceliinae'
  • 'Ceratreta belongs to Ceratretidae'
  • 'Ceratretidae belongs to Acrotretoidea'
  • 'Chaganella belongs to Hesperomenidae'
  • 'Chalimochonetes is an objective synonym of Boicinetes'
  • 'Chaoiella belongs to Dictyoclostinae'
  • 'Chaoina belongs to Productida'
  • 'Chattertonia belongs to Productellinae'
  • 'Chaulistomella belongs to Plaesiomyinae'
  • 'Chelononia belongs to Streptorhynchinae'
  • 'Chengxiangoproductus is a misspelling of Chenxianoproductus'
  • 'Chenxianoproductus is a subjective synonym of Alatoproductus'
  • 'Chianella belongs to Auriculispininae'
  • 'Chile belongs to Chileidae'
  • 'Chileida belongs to Chileata'
  • 'Chileidae belongs to Matutelloidea'
  • 'Chilenochonetes is corrected as Yagonia and belongs to Anopliinae'
  • 'Chilianshania belongs to Monticuliferinae'
  • 'Chilidiopsidae belongs to Chilidiopsoidea'
  • 'Chilidiopsididae is a misspelling of Chilidiopsidae'
  • 'Chilidiopsinae belongs to Chilidiopsidae'
  • 'Chilidiopsis is a subjective synonym of Coolinia'
  • 'Chilidiopsoidea belongs to Orthotetidina'
  • 'Chilidorthis belongs to Bohemiellidae'
  • 'Chlupacina belongs to Strophochonetinae'
  • 'Choanodus belongs to Poikilosakinae'
  • 'Chonetacea is replaced by Chonetoidea'
  • 'Chonetella belongs to Chonetellini'
  • 'Chonetellidae is replaced by Chonetellini'
  • 'Chonetellini belongs to Productininae'
  • 'Chonetes belongs to Chonetinae'
  • 'Dienerella is an objective synonym of Waagenites'
  • 'Chonetida is replaced by Chonetidina'
  • 'Chonetidae belongs to Chonetoidea'
  • 'Chonetidina belongs to Productida'
  • 'Chonetina belongs to Anopliinae'
  • 'Chonetinae belongs to Chonetidae'
  • 'Chonetinella belongs to Rugosochonetinae'
  • 'Chonetinetes belongs to Svalbardiinae'
  • 'Chonetipustula belongs to Quadratiinae'
  • 'Chonetoidea belongs to Aegiromeninae'
  • 'Chonetoidea belongs to Chonetidina'
  • 'Chonopectella belongs to Productida'
  • 'Chonopectinae was reranked as the family Chonopectidae and belongs to Strophalosioidea'
  • 'Chonopectoides belongs to Devonoproductinae'
  • 'Chonopectus belongs to Chonopectidae'
  • 'Chonosteges belongs to Chonosteginae'
  • 'Chonosteginae belongs to Aulostegidae'
  • 'Chonostegoidella is a subjective synonym of Alatoproductus'
  • 'Chonostegoides belongs to Chonosteginae'
  • 'Chonostrophia belongs to Chonostrophiidae'
  • 'Chonostrophiella belongs to Chonostrophiidae'
  • 'Chonostrophiidae belongs to Chonetoidea'
  • 'Christianella is a subjective synonym of Christiania'
  • 'Christiania belongs to Christianiidae'
  • 'Christianiidae belongs to Strophomenoidea'
  • 'Chrustenopora belongs to Chrustenoporidae'
  • 'Chrustenoporidae belongs to Enteletoidea'
  • 'Chynistrophia belongs to Leptostrophiidae'
  • 'Cilinella belongs to Heterorthidae'
  • 'Cinctifera belongs to Semicostellini'
  • 'Cinerorthis belongs to Glyptorthidae'
  • 'Clavodalejina belongs to Rhipidomellinae'
  • 'Cliftonia belongs to Triplesiidae'
  • 'Clinambon belongs to Clitambonitidae'
  • 'Clistotrema is a subjective synonym of Keyserlingia'
  • 'Clitambonites belongs to Clitambonitidae'
  • 'Clitambonitidae belongs to Clitambonitoidea'
  • 'Clitambonitidina belongs to Billingsellida'
  • 'Clitambonitoidea belongs to Clitambonitidina'
  • 'Colaptomena belongs to Rafinesquininae'
  • 'Collemataria belongs to Lyttoniinae'
  • 'Collumatus belongs to Cyclacanthariinae'
  • 'Comatopoma belongs to Giraldiellidae'
  • 'Companteris belongs to Productini'
  • 'Compressoproductinae belongs to Monticuliferidae'
  • 'Compressoproductus belongs to Compressoproductinae'
  • 'Comuquia belongs to Costispiniferini'
  • 'Connectoproductus is a subjective synonym of Linoprotonia'
  • 'Conodiscinae belongs to Acrothelidae'
  • 'Conodiscus belongs to Conodiscinae'
  • 'Conotreta belongs to Acrotretidae'
  • 'Contradouvillina belongs to Protodouvillininae'
  • 'Coolinia belongs to Chilidiopsinae'
  • 'Coolkilella belongs to Linoproductinae'
  • 'Cooperina belongs to Cooperininae'
  • 'Cooperinidae belongs to Aulostegoidea'
  • 'Cooperininae belongs to Cooperinidae'
  • 'Corbicularia belongs to Caenanopliinae'
  • 'Cordatomyonia belongs to Proschizophoriidae'
  • 'Corineorthis belongs to Plectorthidae'
  • 'Coronalosia belongs to Strophalosiinae'
  • 'Cortezorthinae belongs to Dalmanellidae'
  • 'Cortezorthis belongs to Cortezorthinae'
  • 'Coscinarina belongs to Richthofeniidae'
  • 'Coscinophora belongs to Lyttoniinae'
  • 'Costachonetes belongs to Caenanopliinae'
  • 'Costachonetina belongs to Caenanopliinae'
  • 'Costalosiella belongs to Dasyalosiinae'
  • 'Costatumulus belongs to Auriculispininae'
  • 'Costellariinae is a subjective synonym of Institellinae'
  • 'Costellarina belongs to Institellinae'
  • 'Costiferina belongs to Paucispiniferini'
  • 'Costisorthis belongs to Isorthinae'
  • 'Costispinifera belongs to Costispiniferini'
  • 'Costispiniferini belongs to Overtoniinae'
  • 'Costisteges belongs to Chonosteginae'
  • 'Costistrophomena was reranked as Katastrophomena (Costistrophomena) and belongs to Katastrophomena'
  • 'Costistrophonella is a subjective synonym of Strophonella'
  • 'Costitrimerella belongs to Trimerellidae'
  • 'Craigella belongs to Triplesiidae'
  • 'Crania belongs to Craniidae'
  • 'Craniacea is corrected as Cranioidea and belongs to Craniida'
  • 'Craniida belongs to Craniata'
  • 'Craniidae belongs to Cranioidea'
  • 'Craniops belongs to Craniopsidae'
  • 'Craniopsida belongs to Craniata'
  • 'Craniopsidae belongs to Craniopsioidea'
  • 'Craniopsioidea belongs to Craniopsida'
  • 'Craniotreta belongs to Acrotretoidea'
  • 'Craniscus belongs to Craniidae'
  • 'Craspedalosia belongs to Strophalosiinae'
  • 'Craspedelia belongs to Bimuriidae'
  • 'Craspedona belongs to Institellinae'
  • 'Cremnorthidae belongs to Plectorthoidea'
  • 'Cremnorthis belongs to Cremnorthidae'
  • 'Crinistrophia was reranked as Douvillinella (Crinistrophia) and belongs to Douvillinella'
  • 'Cristicoma belongs to Torynelasmatidae'
  • 'Cristiferina is a subjective synonym of Paucicrura'
  • 'Crossacanthia belongs to Plicatiferini'
  • 'Crossalosia belongs to Dasyalosiinae'
  • 'Crossiskenidium belongs to Skenidiidae'
  • 'Crozonorthis belongs to Platyorthidae'
  • 'Cryptothyris belongs to Dalmanellinae'
  • 'Cryptotreta belongs to Cryptotretidae'
  • 'Cryptotretidae belongs to Paterinoidea'
  • 'Ctenalosia belongs to Ctenalosiinae'
  • 'Ctenalosiinae belongs to Aulostegidae'
  • 'Ctenochonetes belongs to Strophochonetinae'
  • 'Cubacula belongs to Juresaniini'
  • 'Curticia belongs to Curticiidae'
  • 'Curticiidae belongs to Acrotretoidea'
  • 'Cyclantharia is a misspelling of Cyclacantharia'
  • 'Cyclacantharia belongs to Cyclacanthariinae'
  • 'Cyclacanthariidae belongs to Richthofenioidea'
  • 'Cyclacanthariinae belongs to Cyclacanthariidae'
  • 'Cycladigera belongs to Linoporellidae'
  • 'Cyclocoelia belongs to Cyclocoeliidae'
  • 'Cyclocoeliidae belongs to Plectorthoidea'
  • 'Cyclomyonia belongs to Paurorthidae'
  • 'Cymbistropheodonta is a subjective synonym of Strophodonta'
  • 'Cymbithyris belongs to Billingsellidae'
  • 'Cymbricia belongs to Bohemiellidae'
  • 'Cymoproductus belongs to Paramarginiferini'
  • 'Cymostrophia belongs to Protodouvillininae'
  • 'Cyndalia belongs to Gemmellaroiidae'
  • 'Cyphomena is a subjective synonym of Dactylogonia'
  • 'Cyphomena (Cyphomenoidea) is reassigned into Bellimurina'
  • 'Cyphotalosia belongs to Quadratiinae'
  • 'Cyrbasiotreta belongs to Siphonotretidae'
  • 'Cyrtalosia belongs to Incisiini'
  • 'Cyrtoniscus is a subjective synonym of Plicanoplia'
  • 'Cyrtonotella belongs to Nanorthidae'
  • 'Cyrtonotreta belongs to Acrotretidae'
  • 'Dactylogonia belongs to Furcitellinae'
  • 'Dactylotreta belongs to Acrotretidae'
  • 'Dagnachonetes belongs to Dagnachonetinae'
  • 'Dagnachonetinae belongs to Chonetidae'
  • 'Dalejina belongs to Rhipidomellinae'
  • 'Dalejodiscus was reranked as Plectodonta (Dalejodiscus) and belongs to Plectodonta'
  • 'Dalinuria belongs to Costispiniferini'
  • 'Dalmanella belongs to Dalmanellinae'
  • 'Dalmanellidae belongs to Dalmanelloidea'
  • 'Dalmanellidina belongs to Orthida'
  • 'Dalmanellinae belongs to Dalmanellidae'
  • 'Dalmanelloidea belongs to Dalmanellidina'
  • 'Dalmanellopsis belongs to Draboviinae'
  • 'Danocrania belongs to Craniidae'
  • 'Dasyalosia belongs to Dasyalosiinae'
  • 'Dasyalosiinae belongs to Strophalosiidae'
  • 'Dasysaria belongs to Dictyoclostinae'
  • 'Datangia belongs to Gigantoproductini'
  • 'Daviesiella belongs to Daviesiellidae'
  • 'Daviesiellidae belongs to Chonetoidea'
  • 'Davoustia belongs to Eodevonariidae'
  • 'Dawsonelloides belongs to Strophochonetinae'
  • 'Dearbornia is a subjective synonym of Acrothele'
  • 'Dedzetina belongs to Resserellinae'
  • 'Delepinea belongs to Delepineinae'
  • 'Delepineinae belongs to Rugosochonetidae'
  • 'Demonedys belongs to Anopliinae'
  • 'Dengalosia belongs to Chonopectidae'
  • 'Densepustula belongs to Juresaniini'
  • 'Derbyella belongs to Scacchinellinae'
  • 'Derbyia belongs to Derbyiidae'
  • 'Derbyiidae belongs to Orthotetoidea'
  • 'Derbyoides belongs to Orthotetidae'
  • 'Desistrophia belongs to Mesodouvillininae'
  • 'Desmoinesia belongs to Breileeniini'
  • 'Desmorthis belongs to Plectorthidae'
  • 'Devonalosia belongs to Donalosiinae'
  • 'Devonamphistrophia belongs to Amphistrophiinae'
  • 'Devonaria belongs to Caenanopliinae'
  • 'Devonochonetes belongs to Devonochonetinae'
  • 'Devonochonetinae belongs to Chonetidae'
  • 'Devonoproductinae belongs to Monticuliferidae'
  • 'Devonoproductus belongs to Devonoproductinae'
  • 'Diambonia is a subjective synonym of Leangella'
  • 'Diambonioidea belongs to Grorudiidae'
  • 'Diandongia belongs to Botsfordiidae'
  • 'Diaphragmus belongs to Productini'
  • 'Dicellomus belongs to Obolinae'
  • 'Diceromyonia belongs to Platyorthidae'
  • 'Dichacaenia belongs to Donalosiinae'
  • 'Dicoelosia belongs to Dicoelosiidae'
  • 'Dicoelosiidae belongs to Dalmanelloidea'
  • 'Dicoelostrophia belongs to Dicoelostrophiinae'
  • 'Dicoelostrophiinae belongs to Douvillinidae'
  • 'Dicondylotreta belongs to Acrotretidae'
  • 'Dictyobolus is a subjective synonym of Lamanskya'
  • 'Dictyoclostidae was reranked as the subfamily Dictyoclostinae and belongs to Productidae'
  • 'Dictyoclostoidea belongs to Schrenkiellinae'
  • 'Dictyoclostus belongs to Dictyoclostinae'
  • 'Dictyonella is replaced by Eodictyonella'
  • 'Dictyonellida belongs to Chileata'
  • 'Dictyonina belongs to Paterinidae'
  • 'Dictyonites belongs to Paterinidae'
  • 'Dictyostrophia belongs to Strophodontidae'
  • 'Dicystoconcha belongs to Permianellidae'
  • 'Didymoparcium belongs to Tyronellidae'
  • 'Dignomia belongs to Linguloidea'
  • 'Dinobolus belongs to Trimerellidae'
  • 'Dinorthis belongs to Plaesiomyinae'
  • 'Dinorthis (Pionorthis) was reranked as Pionorthis and belongs to Plaesiomyinae'
  • 'Dinorthis (Retrorsirostra) was reranked as Retrorsirostra and belongs to Plaesiomyinae'
  • 'Diochthofera belongs to Orthidae'
  • 'Diorthelasma belongs to Draboviinae'
  • 'Diparelasma belongs to Finkelnburgiidae'
  • 'Diplanus belongs to Derbyiidae'
  • 'Miniplanus is a subjective synonym of Streptopomum'
  • 'Diplonorthis belongs to Nanorthidae'
  • 'Dipunctella is a subjective synonym of Dicystoconcha'
  • 'Diraphora belongs to Bohemiellidae'
  • 'Discina belongs to Disciniidae'
  • 'Discinacea is corrected as Discinoidea and belongs to Lingulida'
  • 'Discinidae is corrected as Disciniidae and belongs to Discinoidea'
  • 'Discinisca belongs to Disciniidae'
  • 'Discinisca (Discradisca) was reranked as Discradisca and belongs to Disciniidae'
  • 'Discinopsis belongs to Craniopsidae'
  • 'Discomyorthis belongs to Rhipidomellinae'
  • 'Discotreta belongs to Conodiscinae'
  • 'Ditreta belongs to Acrotretidae'
  • 'Doleroides belongs to Plectorthidae'
  • 'Dolerorthis belongs to Hesperorthidae'
  • 'Dolichomocelypha belongs to Problematica'
  • 'Donalosia belongs to Donalosiinae'
  • 'Donalosiinae belongs to Araksalosiidae'
  • 'Dorashamia belongs to Costispiniferini'
  • 'Dorsirugatia belongs to Productinini'
  • 'Dorsoscyphus belongs to Derbyiidae'
  • 'Douvillina belongs to Douvillininae'
  • 'Douvillinaria belongs to Douvillininae'
  • 'Douvillinella belongs to Protodouvillininae'
  • 'Douvillinidae belongs to Strophomenoidea'
  • 'Douvillininae belongs to Douvillinidae'
  • 'Douvillinoides belongs to Douvillininae'
  • 'Douvinella belongs to Strophomenoidea'
  • 'Dowhatania belongs to Productini'
  • 'Drabodiscina belongs to Trematidae'
  • 'Drabovia belongs to Draboviinae'
  • 'Draboviidae belongs to Enteletoidea'
  • 'Draboviinae belongs to Draboviidae'
  • 'Drabovinella belongs to Draboviinae'
  • 'Drahanorhynchus belongs to Streptorhynchinae'
  • 'Drahanostrophia belongs to Adectorhynchinae'
  • 'Drummuckina belongs to Strophomeninae'
  • 'Duartea belongs to Yakovleviini'
  • 'Dubioleptina belongs to Sowerbyellinae'
  • 'Dulankarella belongs to Leptellininae'
  • 'Dyoros belongs to Svalbardiinae'
  • 'Dyschrestia belongs to Costispiniferini'
  • 'Dysoristidae belongs to Linguloidea'
  • 'Dysoristus belongs to Dysoristidae'
  • 'Dysprosorthis belongs to Chrustenoporidae'
  • 'Dzhebaglina belongs to Furcitellinae'
  • 'Eccentricosta belongs to Parachonetinae'
  • 'Echinalosia belongs to Dasyalosiinae'
  • 'Echinalosia (Notolosia) was reranked as Notolosia and belongs to Dasyalosiinae'
  • 'Echinaria belongs to Echinoconchini'
  • 'Echinauriella belongs to Costispiniferini'
  • 'Echinariella is a misspelling of Echinauriella'
  • 'Echinauris belongs to Costispiniferini'
  • 'Echinoconchella belongs to Karavankinini'
  • 'Echinoconchidae belongs to Echinoconchoidea'
  • 'Echinoconchinae belongs to Echinoconchidae'
  • 'Echinoconchini belongs to Echinoconchinae'
  • 'Echinoconchoidea belongs to Productidina'
  • 'Echinoconchus belongs to Echinoconchini'
  • 'Echinosteges belongs to Echinosteginae'
  • 'Echinosteginae belongs to Aulostegidae'
  • 'Ectenoglossa belongs to Glossellinae'
  • 'Edreja belongs to Botsfordiidae'
  • 'Edriosteges belongs to Echinosteginae'
  • 'Edriosteginae belongs to Aulostegidae'
  • 'Eichwaldia belongs to Eichwaldiidae'
  • 'Eichwaldiidae belongs to Eichwaldioidea'
  • 'Eichwaldioidea belongs to Dictyonellida'
  • 'Eilotreta is a subjective synonym of Onychotreta'
  • 'Elasmothyris belongs to Linoporellidae'
  • 'Elegesta belongs to Proschizophoriidae'
  • 'Elkania belongs to Elkaniidae'
  • 'Elkaniidae belongs to Linguloidea'
  • 'Elkanisca belongs to Elkaniidae'
  • 'Elliottella belongs to Paucispiniferini'
  • 'Elliptoglossa belongs to Elliptoglossinae'
  • 'Elliptoglossinae belongs to Obolidae'
  • 'Elliptostrophia is a subjective synonym of Rugoleptaena'
  • 'Engenella is a subjective synonym of Hesperonomiella'
  • 'Enigmalosia belongs to Donalosiinae'
  • 'Entacanthadus belongs to Marginiferini'
  • 'Enteletella belongs to Enteletidae'
  • 'Enteletes belongs to Enteletidae'
  • 'Enteletidae belongs to Enteletoidea'
  • 'Enteletina belongs to Enteletidae'
  • 'Enteletoidea belongs to Dalmanellidina'
  • 'Eoamphistrophia belongs to Amphistrophiinae'
  • 'Eochonetes belongs to Sowerbyellinae'
  • 'Eoconcha belongs to Nisusiidae'
  • 'Eoconulidae belongs to Acrotretoidea'
  • 'Eoconulus belongs to Eoconulidae'
  • 'Eocramatia belongs to Eocramatiidae'
  • 'Eodalmanella belongs to Ranorthidae'
  • 'Eodevonaria belongs to Eodevonariidae'
  • 'Eodevonariidae belongs to Chonetoidea'
  • 'Eodictyonella belongs to Eichwaldiidae'
  • 'Eodinobolus belongs to Trimerellidae'
  • 'Eodiorthelasma belongs to Draboviinae'
  • 'Eolissochonetes belongs to Svalbardiinae'
  • 'Eolyttonia belongs to Lyttoniinae'
  • 'Eomaoristrophia belongs to Mesodouvillininae'
  • 'Eomarginifera belongs to Kozlowskiini'
  • 'Eomarginiferina belongs to Paramarginiferini'
  • 'Eomegastrophia belongs to Leptostrophiidae'
  • 'Eoobolidae belongs to Linguloidea'
  • 'Eoobolus belongs to Eoobolidae'
  • 'Eoorthidae belongs to Plectorthoidea'
  • 'Eoorthis belongs to Eoorthidae'
  • 'Eopholidostrophia belongs to Eopholidostrophiidae'
  • 'Eopholidostrophiidae belongs to Strophomenoidea'
  • 'Eoplectodonta belongs to Sowerbyellinae'
  • 'Eoplectodonta (Ygerodiscus) belongs to Eoplectodonta'
  • 'Eoplicanoplia belongs to Protochonetinae'
  • 'Eoproductella belongs to Eoproductellinae'
  • 'Eoproductellinae belongs to Monticuliferidae'
  • 'Eorhipidomella belongs to Platyorthidae'
  • 'Eoscaphelasma belongs to Scaphelasmatidae'
  • 'Eoschuchertella belongs to Adectorhynchinae'
  • 'Eosericoidea is a subjective synonym of Leptella'
  • 'Eosiphonotreta belongs to Siphonotretidae'
  • 'Eosophragmophora belongs to Prokopiinae'
  • 'Eosotrematorthis belongs to Billingsellidae'
  • 'Eostrophalosia belongs to Donalosiinae'
  • 'Eostropheodonta belongs to Leptostrophiidae'
  • 'Eostrophomena belongs to Orthidiellidae'
  • 'Eostrophonella belongs to Strophonellidae'
  • 'Eothele belongs to Acrothelinae'
  • 'Ephippelasma belongs to Ephippelasmatidae'
  • 'Ephippelasmatidae belongs to Acrotretoidea'
  • 'Epicelia belongs to Epiceliinae'
  • 'Epiceliinae belongs to Cooperinidae'
  • 'Epitomyonia belongs to Dicoelosiidae'
  • 'Eremotoechia belongs to Polytoechiidae'
  • 'Eremotrema belongs to Dalmanellinae'
  • 'Ericiatia belongs to Bagrasiini'
  • 'Eridorthis belongs to Glyptorthidae'
  • 'Erinostrophia belongs to Leptostrophiidae'
  • 'Eripnifera belongs to Rhactorthidae'
  • 'Erismatina is a subjective synonym of Tropidelasma'
  • 'Esilia belongs to Strophomeninae'
  • 'Estlandia belongs to Gonambonitidae'
  • 'Etheridgina belongs to Pustulinae'
  • 'Etherilosia belongs to Strophalosiinae'
  • 'Euorthisina belongs to Euorthisinidae'
  • 'Euorthisinidae belongs to Plectorthoidea'
  • 'Eurytreta belongs to Acrotretidae'
  • 'Evenkina belongs to Evenkininae'
  • 'Evenkininae belongs to Plaesiomyidae'
  • 'Evenkinorthis is a subjective synonym of Nanorthis'
  • 'Expellobolus belongs to Obolinae'
  • 'Experilingula belongs to Obolinae'
  • 'Falafer belongs to Cooperininae'
  • 'Fallaxoproductus belongs to Compressoproductinae'
  • 'Famatinorthis belongs to Giraldiellidae'
  • 'Fanichonetes belongs to Rugosochonetinae'
  • 'Fardenia belongs to Chilidiopsinae'
  • 'Fardeniinae is a subjective synonym of Chilidiopsinae'
  • 'Fascicoma belongs to Acrotretidae'
  • 'Fascicostella belongs to Resserellinae'
  • 'Fasciculina belongs to Finkelnburgiidae'
  • 'Fascifera belongs to Draboviinae'
  • 'Fascistropheodonta belongs to Strophodontidae'
  • 'Fascizetina belongs to Resserellinae'
  • 'Fengzuella belongs to Trimerellidae'
  • 'Ferganoproductus belongs to Plicatiferini'
  • 'Ferrax belongs to Productorthinae'
  • 'Ferrobolus belongs to Dysoristidae'
  • 'Fezzanoglossa belongs to Glossellinae'
  • 'Ffynnonia belongs to Platystrophiidae'
  • 'Fibulistrophia is a subjective synonym of Douvillinella'
  • 'Filiconcha belongs to Auriculispininae'
  • 'Fimbriaria is replaced by Fimbrinia'
  • 'Fimbrinia belongs to Overtoniini'
  • 'Finkelnburgia belongs to Finkelnburgiidae'
  • 'Finkelnburgiidae belongs to Plectorthoidea'
  • 'Fistulogonites belongs to Clitambonitidae'
  • 'Flabellitesia belongs to Hesperorthidae'
  • 'Flexaria belongs to Buxtoniini'
  • 'Floweria belongs to Adectorhynchinae'
  • 'Fluctuaria belongs to Linoproductinae'
  • 'Foliomena belongs to Foliomenidae'
  • 'Fordinia belongs to Obolinae'
  • 'Foveola belongs to Obolinae'
  • 'Frankiella belongs to Dagnachonetinae'
  • 'Fulcriphoria belongs to Proschizophoriidae'
  • 'Furcitella belongs to Furcitellinae'
  • 'Furcitellinae belongs to Strophomenidae'
  • 'Fusichonetes belongs to Rugosochonetinae'
  • 'Fusiproductus belongs to Anidanthinae'
  • 'Gacella belongs to Gacellinae'
  • 'Gacellinae belongs to Chilidiopsidae'
  • 'Galateastrophia belongs to Strophodontidae'
  • 'Galeatella belongs to Leioproductini'
  • 'Gamonetes is an objective synonym of Pleurochonetes'
  • 'Gamphalosia belongs to Leptostrophiidae'
  • 'Gasconsia belongs to Trimerellidae'
  • 'Gegenella is a subjective synonym of Meekella'
  • 'Gelidorthina belongs to Giraldiellidae'
  • 'Gelidorthis belongs to Giraldiellidae'
  • 'Gemmellaroia belongs to Gemmellaroiidae'
  • 'Gemmellaroiella is a subjective synonym of Gemmellaroia'
  • 'Gemmellaroiidae belongs to Richthofenioidea'
  • 'Gemmulicosta is a subjective synonym of Buxtonioides'
  • 'Geniculifera belongs to Levitusini'
  • 'Geniculina belongs to Furcitellinae'
  • 'Geniculomclearnites was reranked as Mclearnites (Geniculomclearnites) and belongs to Mclearnites'
  • 'Geyerella belongs to Meekellinae'
  • 'Gibberostrophia belongs to Leptostrophiidae'
  • 'Gibbochonetes belongs to Delepineinae'
  • 'Gigantoproductinae belongs to Monticuliferidae'
  • 'Gigantoproductini belongs to Gigantoproductinae'
  • 'Gigantoproductus belongs to Gigantoproductini'
  • 'Giraldiella belongs to Giraldiellidae'
  • 'Giraldiellidae belongs to Plectorthoidea'
  • 'Glabrichonetina belongs to Anopliinae'
  • 'Gladiostrophia belongs to Mesodouvillininae'
  • 'Glaphyrorthis belongs to Eoorthidae'
  • 'Glaphyorthis is a misspelling of Glaphyrorthis'
  • 'Globiella belongs to Auriculispininae'
  • 'Globosobucina belongs to Richthofeniidae'
  • 'Globosochonetes belongs to Caenanopliinae'
  • 'Globosoproductus belongs to Gigantoproductini'
  • 'Glossella belongs to Glossellinae'
  • 'Glossellinae belongs to Obolidae'
  • 'Glossoleptaena belongs to Leptaeninae'
  • 'Glossorthinae belongs to Productorthidae'
  • 'Glossorthis belongs to Glossorthinae'
  • 'Glottidia belongs to Lingulidae'
  • 'Glyptacrothele is a subjective synonym of Acrothele'
  • 'Glyptambonites belongs to Palaeostrophomeninae'
  • 'Glyptias belongs to Botsfordiidae'
  • 'Glyptoglossella belongs to Glossellinae'
  • 'Glyptomena belongs to Glyptomeninae'
  • 'Glyptomenidae belongs to Strophomenoidea'
  • 'Glyptomeninae belongs to Glyptomenidae'
  • 'Glyptoria belongs to Protorthidae'
  • 'Glyptorthinae was reranked as the family Glyptorthidae and belongs to Orthoidea'
  • 'Glyptorthis belongs to Glyptorthidae'
  • 'Glyptosteges belongs to Institellinae'
  • 'Gonambonites belongs to Gonambonitidae'
  • 'Gonambonitidae belongs to Clitambonitoidea'
  • 'Gondolina belongs to Gondolininae'
  • 'Gondolininae belongs to Aulostegidae'
  • 'Goniarina belongs to Schuchertellinae'
  • 'Goniotrema belongs to Palaeostrophomeninae'
  • 'Gorgostrophia belongs to Strophodontidae'
  • 'Gorjanskya belongs to Obolinae'
  • 'Grammoplecia belongs to Triplesiidae'
  • 'Grandaurispina belongs to Grandaurispininae'
  • 'Grandaurispininae belongs to Linoproductidae'
  • 'Grandiproductella belongs to Leioproductini'
  • 'Gratiosina is an objective synonym of Transennatia'
  • 'Grorudia belongs to Grorudiidae'
  • 'Grorudiidae belongs to Plectambonitoidea'
  • 'Grumantia is a subjective synonym of Arctitreta'
  • 'Guangdongina is a subjective synonym of Dicystoconcha'
  • 'Guangjiayanella is a subjective synonym of Dicystoconcha'
  • 'Gubleria is a subjective synonym of Leptodus'
  • 'Guistrophia belongs to Adectorhynchinae'
  • 'Guizhouella is an objective synonym of Kueichowella'
  • 'Gunnarella belongs to Strophomenoidea'
  • 'Gunningblandella belongs to Sowerbyellinae'
  • 'Guttasella belongs to Ahtiellinae'
  • 'Gyroselenella belongs to Trimerellidae'
  • 'Hadrotreta belongs to Acrotretidae'
  • 'Hallinetes belongs to Devonochonetinae'
  • 'Hanaeproductus is a subjective synonym of Striatoproductella'
  • 'Hansotreta belongs to Acrotretidae'
  • 'Harknessella belongs to Harknessellidae'
  • 'Harknessellidae belongs to Dalmanelloidea'
  • 'Haupiria belongs to Kutorginidae'
  • 'Haydenoides is a subjective synonym of Spinomarginifera'
  • 'Hebertella belongs to Plectorthidae'
  • 'Hedstroemina belongs to Rafinesquininae'
  • 'Helaspis belongs to Productellinae'
  • 'Helenaeproductus is a subjective synonym of Magniplicatina'
  • 'Helenaeproductus khubsugulensis is recombined as Magniplicatina khubsugulensis'
  • 'Heliomedusa belongs to Craniopsidae'
  • 'Helmersenia belongs to Siphonotretidae'
  • 'Hemichonetes belongs to Plicochonetinae'
  • 'Hemichonetes is an objective synonym of Chlupacina'
  • 'Hemipronites belongs to Clitambonitidae'
  • 'Heosomocelypha belongs to Problematica'
  • 'Hercosestria belongs to Hercosiidae'
  • 'Hercosia belongs to Hercosiidae'
  • 'Hercosiidae belongs to Richthofenioidea'
  • 'Hercostrophia belongs to Protodouvillininae'
  • 'Hesperinia belongs to Glyptomeninae'
  • 'Hesperomena belongs to Hesperomenidae'
  • 'Hesperomenidae belongs to Plectambonitoidea'
  • 'Hesperonomia belongs to Hesperonomiidae'
  • 'Hesperonomiella belongs to Hesperonomiidae'
  • 'Hesperonomiidae belongs to Orthoidea'
  • 'Hesperorthidae belongs to Orthoidea'
  • 'Hesperorthis belongs to Hesperorthidae'
  • 'Heteralosia belongs to Strophalosiinae'
  • 'Heteralosiinae is a subjective synonym of Strophalosiinae'
  • 'Heterorthella belongs to Heterorthidae'
  • 'Heterorthidae belongs to Dalmanelloidea'
  • 'Heterorthina belongs to Heterorthidae'
  • 'Heterorthis belongs to Heterorthidae'
  • 'Hibernodonta belongs to Rafinesquininae'
  • 'Hinganella is a subjective synonym of Iridistrophia'
  • 'Hingganoleptaena belongs to Leptaeninae'
  • 'Hipparionix belongs to Chilidiopsinae'
  • 'Hipparionyx belongs to Chilidiopsinae'
  • 'Hirnantia belongs to Draboviinae'
  • 'Hisingerella belongs to Acrotretidae'
  • 'Hollardina belongs to Leptaeninae'
  • 'Holotricharina belongs to Grandaurispininae'
  • 'Holtedahlina belongs to Strophomeninae'
  • 'Holynetes belongs to Holynetinae'
  • 'Holynetinae belongs to Anopliidae'
  • 'Homotreta belongs to Acrotretidae'
  • 'Hontorialosia belongs to Dasyalosiinae'
  • 'Horderleyella belongs to Harknessellidae'
  • 'Horridonia belongs to Horridoniini'
  • 'Horridoniini belongs to Leioproductinae'
  • 'Howellites belongs to Dalmanellinae'
  • 'Howseia belongs to Echinosteginae'
  • 'Huananochonetes belongs to Devonochonetinae'
  • 'Huatangia belongs to Paramarginiferini'
  • 'Hubeiproductus is a subjective synonym of Productus'
  • 'Humaella is a subjective synonym of Akelina'
  • 'Hunanoproductus belongs to Leioproductini'
  • 'Hyperobolus belongs to Zhanatellidae'
  • 'Hypolinoproductus is a subjective synonym of Dictyoclostoidea'
  • 'Hypopsia belongs to Orthotetellidae'
  • 'Hypselonetes belongs to Protochonetinae'
  • 'Hypsomoniidae belongs to Dalmanelloidea'
  • 'Hypsomyonia belongs to Hypsomoniidae'
  • 'Hystriculina belongs to Paucispiniferini'
  • 'Idioglyptus belongs to Strophomenoidea'
  • 'Idiorthis belongs to Proschizophoriidae'
  • 'Impiacus belongs to Levipustulini'
  • 'Incisiini belongs to Marginiferinae'
  • 'Incisius belongs to Incisiini'
  • 'Incorthis belongs to Heterorthidae'
  • 'Indigia is a subjective synonym of Schrenkiella'
  • 'Inflatia belongs to Yakovleviini'
  • 'Infurca belongs to Strophomeninae'
  • 'Ingria belongs to Plectambonitinae'
  • 'Iniproductus belongs to Rugaurini'
  • 'Institella belongs to Institellinae'
  • 'Institellinae belongs to Aulostegidae'
  • 'Institifera belongs to Institiferini'
  • 'Institiferini belongs to Overtoniinae'
  • 'Institina belongs to Institellinae'
  • 'Inversella belongs to Ahtiellinae'
  • 'Irboskites belongs to Donalosiinae'
  • 'Irhirea belongs to Plectorthidae'
  • 'Iridistrophia belongs to Chilidiopsinae'
  • 'Ishimia belongs to Palaeostrophomeninae'
  • 'Isochonetes belongs to Rugosochonetinae'
  • 'Isocrania belongs to Craniidae'
  • 'Isogramma belongs to Isogrammidae'
  • 'Isogrammidae belongs to Eichwaldioidea'
  • 'Isophragma belongs to Taphrodontinae'
  • 'Isorthidae is replaced by Isorthinae'
  • 'Isorthinae belongs to Dalmanellidae'
  • 'Isorthis belongs to Isorthinae'
  • 'Israelaria belongs to Protorthidae'
  • 'Issedonia belongs to Torynelasmatidae'
  • 'Ivshinella belongs to Obolellidae'
  • 'Jaanussonites belongs to Gonambonitidae'
  • 'Jakutella belongs to Sentosiini'
  • 'Jakutochonetes belongs to Rugosochonetinae'
  • 'Jakutoproductus belongs to Levipustulini'
  • 'Jakutostrophia belongs to Mesodouvillininae'
  • 'Jamesella belongs to Protorthidae'
  • 'Jevinellina is a subjective synonym of Jivinella'
  • 'Jezercia belongs to Chrustenoporidae'
  • 'Jercia is a misspelling of Jezercia'
  • 'Jielingia is a subjective synonym of Foliomena'
  • 'Jiguliconcha belongs to Paucispiniferini'
  • 'Jipuproductus belongs to Marginiferini'
  • 'Jivinella belongs to Eoorthidae'
  • 'Johnsonetes belongs to Strophochonetinae'
  • 'Jonesea belongs to Aegiromeninae'
  • 'Juresania belongs to Juresaniini'
  • 'Juresaniinae belongs to Echinoconchidae'
  • 'Juresaniini belongs to Juresaniinae'
  • 'Juxoldhamina is a subjective synonym of Leptodus'
  • 'Kadraliproductus belongs to Levitusini'
  • 'Kajnaria belongs to Leptellininae'
  • 'Kampella belongs to Harknessellidae'
  • 'Kansuella belongs to Gigantoproductini'
  • 'Karathele belongs to Botsfordiidae'
  • 'Karavankina belongs to Karavankinini'
  • 'Karavankinini belongs to Echinoconchinae'
  • 'Karlicium belongs to Resserellinae'
  • 'Karnotreta belongs to Siphonotretidae'
  • 'Kasetia belongs to Linoproductinae'
  • 'Kassinella belongs to Hesperomenidae'
  • 'Katastrophomena belongs to Furcitellinae'
  • 'Kavesia belongs to Leioproductini'
  • 'Kayserella belongs to Kayserellidae'
  • 'Kayserellidae belongs to Dalmanelloidea'
  • 'Kelamelia belongs to Retariini'
  • 'Kentronetes belongs to Strophochonetinae'
  • 'Keokukia belongs to Retariini'
  • 'Keyserlingia belongs to Ceratretidae'
  • 'Keyserlingina belongs to Lyttoniinae'
  • 'Khangaestrophia belongs to Strophodontidae'
  • 'Khasagtina belongs to Nisusiidae'
  • 'Khasaghia is a misspelling of Khasagtina'
  • 'Kiaeromena belongs to Leptaeninae'
  • 'Kiangsiella belongs to Streptorhynchinae'
  • 'Kinelina is a subjective synonym of Telaeoshaleria'
  • 'Kinnella belongs to Draboviinae'
  • 'Kirkina belongs to Furcitellinae'
  • 'Kjaerina belongs to Rafinesquininae'
  • 'Kjerulfina belongs to Rafinesquininae'
  • 'Kleithriatreta belongs to Ceratretidae'
  • 'Kochiproductus belongs to Buxtoniini'
  • 'Kolihium belongs to Paterinidae'
  • 'Komiella belongs to Svalbardiinae'
  • 'Komukia belongs to Rugosochonetinae'
  • 'Kosoidea belongs to Disciniidae'
  • 'Kotujella belongs to Matutellidae'
  • 'Kotujotreta is a subjective synonym of Longipegma'
  • 'Kotylotreta belongs to Acrotretidae'
  • 'Kozhuchinella belongs to Billingsellidae'
  • 'Kozlowskia belongs to Kozlowskiini'
  • 'Kozlowskiini belongs to Productinae'
  • 'Kozlowskites was reranked as Eoplectodonta (Kozlowskites) and belongs to Eoplectodonta'
  • 'Krejcigrafella was reranked as Schuchertellopsis (Krejcigrafella) and belongs to Schuchertellopsis'
  • 'Krizistrophia is a subjective synonym of Coolinia'
  • 'Krotovia belongs to Krotoviini'
  • 'Krotoviini belongs to Overtoniinae'
  • 'Kueichowella belongs to Gigantoproductini'
  • 'Kullervo belongs to Gonambonitidae'
  • 'Kunlunia belongs to Dictyoclostinae'
  • 'Kurtomarginifera is a subjective synonym of Transennatia'
  • 'Kutorgina belongs to Kutorginidae'
  • 'Kutorginella belongs to Retariini'
  • 'Kutorginida belongs to Kutorginata'
  • 'Kutorginidae belongs to Kutorginoidea'
  • 'Kutorginoidea belongs to Kutorginida'
  • 'Kuvelousia belongs to Anidanthinae'
  • 'Kyrshabaktella belongs to Obolinae'
  • 'Labriproductus belongs to Buxtoniini'
  • 'Lachrymula belongs to Glossellinae'
  • 'Lacunites belongs to Paterinidae'
  • 'Laevicyphomena belongs to Furcitellinae'
  • 'Laima belongs to Linguloidea'
  • 'Lamanskya belongs to Elkaniidae'
  • 'Lamellodonta is a subjective synonym of Trematobolus'
  • 'Lamellosia belongs to Lamellosiinae'
  • 'Lamellosiinae belongs to Rugosochonetidae'
  • 'Laminatia belongs to Sentosiini'
  • 'Lamiproductus is a subjective synonym of Pseudohaydenella'
  • 'Lamnimargus belongs to Paucispiniferini'
  • 'Lampangella belongs to Paucispiniferini'
  • 'Langella belongs to Lingulidae'
  • 'Lanipustula belongs to Levipustulini'
  • 'Laterispina belongs to Permianellidae'
  • 'Laticrura belongs to Linoporellidae'
  • 'Latiproductus belongs to Semiplanini'
  • 'Leangella belongs to Leptestiidae'
  • 'Lebediorthis is a nomen dubium'
  • 'Leiochonetes belongs to Svalbardiinae'
  • 'Leioproductinae belongs to Productidae'
  • 'Leioproductini belongs to Leioproductinae'
  • 'Leioproductus belongs to Leioproductini'
  • 'Leioria belongs to Leioriidae'
  • 'Leioriidae belongs to Protorthoidea'
  • 'Leontiella belongs to Obolinae'
  • 'Lepidocrania belongs to Craniidae'
  • 'Lepidoleptaena belongs to Leptaeninae'
  • 'Lepidomena belongs to Palaeostrophomeninae'
  • 'Lepidorthis belongs to Glyptorthidae'
  • 'Leptaena belongs to Leptaeninae'
  • 'Leptaenidae is replaced by Leptaeninae'
  • 'Leptaeninae belongs to Rafinesquinidae'
  • 'Leptaenisca belongs to Leptaenoideidae'
  • 'Leptaenoidea belongs to Leptaenoideidae'
  • 'Leptaenoideidae belongs to Strophomenoidea'
  • 'Leptaenomendax belongs to Leptaenoideidae'
  • 'Leptaenopoma is a subjective synonym of Leptaena'
  • 'Leptaenopyxis belongs to Leptaeninae'
  • 'Leptagonia belongs to Leptaeninae'
  • 'Leptalosia belongs to Strophalosiinae'
  • 'Leptella belongs to Leptellinae'
  • 'Leptellina belongs to Leptellininae'
  • 'Leptellinae belongs to Taffiidae'
  • 'Leptellinidae belongs to Plectambonitoidea'
  • 'Leptellininae belongs to Leptellinidae'
  • 'Leptelloidea belongs to Leptellininae'
  • 'Leptembolon belongs to Obolinae'
  • 'Leptestia belongs to Leptestiidae'
  • 'Leptestiidae belongs to Plectambonitoidea'
  • 'Leptestiina was reranked as Leangella (Leptestiina) and belongs to Leangella'
  • 'Leptobolus belongs to Glossellinae'
  • 'Leptochonetes belongs to Strophochonetinae'
  • 'Leptodonta belongs to Strophodontidae'
  • 'Leptodontella belongs to Leptodontellinae'
  • 'Leptodontellinae belongs to Douvillinidae'
  • 'Leptodus belongs to Lyttoniinae'
  • 'Leptoskelidion belongs to Linoporellidae'
  • 'Leptostrophia belongs to Leptostrophiidae'
  • 'Leptostrophiella is a subjective synonym of Mesoleptostrophia'
  • 'Leptostrophiidae belongs to Strophomenoidea'
  • 'Lercarella belongs to Monticuliferidae'
  • 'Lethamia belongs to Costispiniferini'
  • 'Leurosina belongs to Svalbardiinae'
  • 'Levenea belongs to Isorthinae'
  • 'Levipustula belongs to Levipustulini'
  • 'Levipustulini belongs to Plicatiferinae'
  • 'Levitusia belongs to Levitusini'
  • 'Levitusini belongs to Plicatiferinae'
  • 'Lialosia belongs to Strophalosiinae'
  • 'Libyaeglossa belongs to Glossellinae'
  • 'Libys belongs to Tolmatchoffiini'
  • 'Licharewiella belongs to Strophalosiinae'
  • 'Liljevallia belongs to Leptaenoideidae'
  • 'Limbella belongs to Echinosteginae'
  • 'Limbifera belongs to Semicostellini'
  • 'Limbimurina belongs to Leptaeninae'
  • 'Lindinella belongs to Obolinae'
  • 'Lindstroemella belongs to Disciniidae'
  • 'Lingula belongs to Lingulidae'
  • 'Lingulacea is replaced by Linguloidea'
  • 'Lingulapholis belongs to Craniopsidae'
  • 'Lingularia belongs to Lingulidae'
  • 'Lingulasma belongs to Lingulasmatidae'
  • 'Lingulasmatidae belongs to Linguloidea'
  • 'Lingulata belongs to Linguliformea'
  • 'Lingulella belongs to Obolinae'
  • 'Lingulellotreta belongs to Lingulellotretidae'
  • 'Lingulellotretidae belongs to Linguloidea'
  • 'Lingulepis belongs to Obolinae'
  • 'Lingulida belongs to Lingulata'
  • 'Lingulidae belongs to Linguloidea'
  • 'Lingulipora belongs to Linguloidea'
  • 'Lingulobolus belongs to Obolinae'
  • 'Lingulodiscina belongs to Disciniidae'
  • 'Linguloidea belongs to Lingulida'
  • 'Lingulops belongs to Elliptoglossinae'
  • 'Linnarssonella belongs to Acrotretidae'
  • 'Linnarssonia belongs to Acrotretidae'
  • 'Linoporella belongs to Linoporellidae'
  • 'Linoporellidae belongs to Enteletoidea'
  • 'Linoproductidae belongs to Linoproductoidea'
  • 'Linoproductinae belongs to Linoproductidae'
  • 'Linoproductoidea belongs to Productidina'
  • 'Linoprotonia belongs to Auriculispininae'
  • 'Linostrophomena belongs to Glyptomeninae'
  • 'Lioleptaena belongs to Leptaeninae'
  • 'Liosotella belongs to Paucispiniferini'
  • 'Lipanteris belongs to Aulosteginae'
  • 'Liraplecta belongs to Dictyoclostinae'
  • 'Liraria belongs to Auriculispininae'
  • 'Lissochonetes belongs to Svalbardiinae'
  • 'Lissoleptaena belongs to Leptaeninae'
  • 'Lissomarginifera is a subjective synonym of Eomarginifera'
  • 'Lissostrophia belongs to Strophodontidae'
  • 'Lissotreta is a subjective synonym of Onychotreta'
  • 'Litocothia belongs to Loczyellinae'
  • 'Liveringia belongs to Strophalosiinae'
  • 'Ljaschenkovia is a subjective synonym of Schizobolus'
  • 'Lochkothele belongs to Disciniidae'
  • 'Loczyella belongs to Loczyellinae'
  • 'Loczyellinae belongs to Permianelloidea'
  • 'Loganella belongs to Perditocardiniinae'
  • 'Lomatiphora belongs to Semiproductini'
  • 'Lomatorthis belongs to Glyptorthidae'
  • 'Longipegma belongs to Acrotretidae'
  • 'Longispina belongs to Devonochonetinae'
  • 'Longvillia belongs to Strophomeninae'
  • 'Lopasnia belongs to Productini'
  • 'Loperia belongs to Arctohedridae'
  • 'Lopingia is a subjective synonym of Orthothetina'
  • 'Lordorthis belongs to Hesperorthidae'
  • 'Loreleiella belongs to Eodevonariidae'
  • 'Loxophragmus belongs to Lyttoniinae'
  • 'Luanquella belongs to Dagnachonetinae'
  • 'Ludfordina is a subjective synonym of Glossoleptaena'
  • 'Ludfordina pixis is recombined as Glossoleptaena pixis'
  • 'Luhaia belongs to Furcitellinae'
  • 'Luhotreta is a subjective synonym of Vandalotreta'
  • 'Lunoglossa belongs to Linguloidea'
  • 'Lurgiticoma belongs to Ephippelasmatidae'
  • 'Lycophoria belongs to Lycophoriidae'
  • 'Lycophoriidae belongs to Orthoidea'
  • 'Lyonia belongs to Grandaurispininae'
  • 'Lyttonia is a subjective synonym of Leptodus'
  • 'Lyttoniidae belongs to Lyttonioidea'
  • 'Lyttoniidina belongs to Productida'
  • 'Lyttoniinae belongs to Lyttoniidae'
  • 'Lyttonioidea belongs to Lyttoniidina'
  • 'Maakina belongs to Furcitellinae'
  • 'Mabella belongs to Leptellininae'
  • 'Machaerocolella is a subjective synonym of Trimerella'
  • 'Mackerrovia belongs to Leptaeninae'
  • 'Macrocoelia is a subjective synonym of Colaptomena'
  • 'Maemia belongs to Semicostellini'
  • 'Magadania belongs to Auriculispininae'
  • 'Magicostrophia is a subjective synonym of Iridistrophia'
  • 'Magnicanalis belongs to Obolellidae'
  • 'Magniplicatina belongs to Auriculispininae'
  • 'Magniventra is a subjective synonym of Leptostrophia'
  • 'Magnumbonella belongs to Leioproductini'
  • 'Malayanoplia belongs to Holynetinae'
  • 'Malinella is a nomen dubium'
  • 'Malloproductus belongs to Sentosiini'
  • 'Malurostrophia belongs to Protodouvillininae'
  • 'Mamatia belongs to Ephippelasmatidae'
  • 'Mamutinetes belongs to Dagnachonetinae'
  • 'Mansina belongs to Furcitellinae'
  • 'Maoristrophia belongs to Mesodouvillininae'
  • 'Mapingtichia belongs to Enteletidae'
  • 'Marcharella is a subjective synonym of Finkelnburgia'
  • 'Margaritiproductus belongs to Semiproductini'
  • 'Marginalosia belongs to Dasyalosiinae'
  • 'Marginatia belongs to Tolmatchoffiini'
  • 'Marginicinctus belongs to Buxtoniini'
  • 'Marginifera belongs to Marginiferini'
  • 'Marginifera (Otariella) was reranked as Otariella and belongs to Marginiferini'
  • 'Marginiferinae belongs to Productellidae'
  • 'Marginiferini belongs to Marginiferinae'
  • 'Marginirugus belongs to Productini'
  • 'Marginoproductus belongs to Retariini'
  • 'Marginorthis belongs to Whittardiidae'
  • 'Marginovatia belongs to Linoproductinae'
  • 'Marionites belongs to Heterorthidae'
  • 'Markamia belongs to Sentosiini'
  • 'Marklandella belongs to Platyorthidae'
  • 'Martellia belongs to Polytoechiidae'
  • 'Matanoleptodus belongs to Lyttoniinae'
  • 'Matutella belongs to Matutellidae'
  • 'Matutellidae belongs to Matutelloidea'
  • 'Matutelloidea belongs to Chileida'
  • 'Mcewanella belongs to Platystrophiidae'
  • 'Mclearnites belongs to Mesodouvillininae'
  • 'Mclearnitesella is a subjective synonym of Mclearnites'
  • 'Medessia belongs to Anomalorthidae'
  • 'Meekella belongs to Meekellinae'
  • 'Meekellidae belongs to Orthotetoidea'
  • 'Meekellinae belongs to Meekellidae'
  • 'Megachonetes belongs to Delepineinae'
  • 'Megalosia belongs to Strophalosiinae'
  • 'Megamyonia belongs to Rafinesquininae'
  • 'Megapleuronia belongs to Isogrammidae'
  • 'Megasalopina belongs to Draboviinae'
  • 'Megaspinochonetes is an objective synonym of Spinochonetes'
  • 'Megasteges belongs to Aulosteginae'
  • 'Megastrophia belongs to Strophodontidae'
  • 'Megastrophiella belongs to Protodouvillininae'
  • 'Megatschernyschewia belongs to Tschernyschewiinae'
  • 'Megousia belongs to Anidanthinae'
  • 'Mendacella belongs to Rhipidomellinae'
  • 'Merciella was reranked as Leptellina (Merciella) and belongs to Leptellina'
  • 'Mesodouvillina belongs to Mesodouvillininae'
  • 'Mesodouvillininae belongs to Amphistrophiidae'
  • 'Mesoleptostrophia belongs to Leptostrophiidae'
  • 'Mesolissostrophia is a subjective synonym of Mesopholidostrophia'
  • 'Mesolobus belongs to Capillomesolobinae'
  • 'Mesopholidostrophia belongs to Eopholidostrophiidae'
  • 'Mesoplica belongs to Leioproductini'
  • 'Mesotreta belongs to Siphonotretidae'
  • 'Metorthinae belongs to Plaesiomyidae'
  • 'Metorthis belongs to Metorthinae'
  • 'Mezounia belongs to Aegiromeninae'
  • 'Micraphelia belongs to Undulellinae'
  • 'Micromitra belongs to Paterinidae'
  • 'Microtrypa is a subjective synonym of Trigrammaria'
  • 'Mimella belongs to Plectorthidae'
  • 'Mingenewia belongs to Mingenewiinae'
  • 'Mingenewiinae belongs to Strophalosiidae'
  • 'Miniprokopia belongs to Prokopiinae'
  • 'Minispina belongs to Kozlowskiini'
  • 'Minutostropheodonta belongs to Strophodontidae'
  • 'Mirilingula belongs to Lingulellotretidae'
  • 'Mirorthis belongs to Dalmanellinae'
  • 'Mistproductus belongs to Linoproductinae'
  • 'Mitchellella is a subjective synonym of Mesoleptostrophia'
  • 'Mjoesina belongs to Glyptomeninae'
  • 'Moderatoproductus is a subjective synonym of Datangia'
  • 'Mogoktella belongs to Anomalorthidae'
  • 'Molongcola belongs to Furcitellinae'
  • 'Molongella belongs to Resserellinae'
  • 'Monelasmiinae belongs to Draboviidae'
  • 'Monelasmina belongs to Monelasmiinae'
  • 'Mongolosia belongs to Ctenalosiinae'
  • 'Monobolina belongs to Elkaniidae'
  • 'Monoconvexa belongs to Obolellida'
  • 'Monomerella belongs to Trimerellidae'
  • 'Monorthis belongs to Hesperonomiidae'
  • 'Monticulifera belongs to Monticuliferinae'
  • 'Monticuliferidae belongs to Linoproductoidea'
  • 'Monticuliferinae belongs to Monticuliferidae'
  • 'Montsenetes belongs to Devonochonetinae'
  • 'Moravostrophia belongs to Protodouvillininae'
  • 'Morganella belongs to Donalosiinae'
  • 'Morinorhynchus belongs to Chilidiopsinae'
  • 'Muirwoodia is a subjective synonym of Yakovlevia'
  • 'Muirwoodia californica is recombined as Yakovlevia californica'
  • 'Multicostella belongs to Plaesiomyinae'
  • 'Multiridgia belongs to Aegiromeninae'
  • 'Multispinula belongs to Siphonotretidae'
  • 'Munhella is a subjective synonym of Dolerorthis'
  • 'Muriferella belongs to Monelasmiinae'
  • 'Murinella belongs to Furcitellinae'
  • 'Murjukiana belongs to Hesperonomiidae'
  • 'Murrinyinella belongs to Bohemiellidae'
  • 'Mylloconotreta belongs to Torynelasmatidae'
  • 'Myotreta belongs to Ephippelasmatidae'
  • 'Mystrophora belongs to Mystrophoridae'
  • 'Mystrophoridae belongs to Dalmanelloidea'
  • 'Nabarredia belongs to Protochonetinae'
  • 'Nabiaoia belongs to Aegiromeninae'
  • 'Nadiastrophia belongs to Protodouvillininae'
  • 'Nanambonites was reranked as Taphrodonta (Nanambonites) and belongs to Taphrodonta'
  • 'Nanorthidae belongs to Orthoidea'
  • 'Nanorthis belongs to Nanorthidae'
  • 'Narynella belongs to Nisusiidae'
  • 'Naukat belongs to Naukatidae'
  • 'Naukatida belongs to Obolellata'
  • 'Naukatidae belongs to Naukatoidea'
  • 'Naukatoidea belongs to Naukatida'
  • 'Nematocrania belongs to Craniidae'
  • 'Neobolus belongs to Botsfordiidae'
  • 'Neochonetes belongs to Rugosochonetinae'
  • 'Neocrania belongs to Craniidae'
  • 'Neokjaerina is a subjective synonym of Eostropheodonta'
  • 'Neoplicatifera belongs to Costispiniferini'
  • 'Neorichthofenia belongs to Hercosiidae'
  • 'Neoschizophoria belongs to Schizophoriidae'
  • 'Neotremata is replaced by Acrotretida'
  • 'Neotreta belongs to Acrotretidae'
  • 'Neoyanguania is a subjective synonym of Xinshaoproductus'
  • 'Nereidella belongs to Paurorthidae'
  • 'Nervostrophia belongs to Leptostrophiidae'
  • 'Neumanella belongs to Strophodontidae'
  • 'Neumania belongs to Clitambonitidae'
  • 'Nicolella belongs to Productorthinae'
  • 'Nicoloidea belongs to Nanorthidae'
  • 'Nicolorthis belongs to Glossorthinae'
  • 'Nigerinoplica belongs to Semiproductini'
  • 'Nisusia belongs to Nisusiidae'
  • 'Nisusiidae belongs to Nisusioidea'
  • 'Nisusioidea belongs to Kutorginida'
  • 'Niutoushania belongs to Dictyoclostinae'
  • 'Niviconia belongs to Meekellinae'
  • 'Nix is a subjective synonym of Rugosochonetes'
  • 'Nochoroiella belongs to Obolellida'
  • 'Nocturnellia belongs to Draboviinae'
  • 'Nodella is replaced by Malloproductus'
  • 'Nothokuvelousia is a subjective synonym of Kuvelousia'
  • 'Nothopindax belongs to Derbyiidae'
  • 'Nothorthis belongs to Ranorthidae'
  • 'Notiobolus belongs to Obolinae'
  • 'Notiochonetes belongs to Notiochonetinae'
  • 'Notiochonetinae belongs to Chonetidae'
  • 'Notoleptaena belongs to Leptaeninae'
  • 'Notorthisina belongs to Euorthisinidae'
  • 'Notoscaphidia belongs to Finkelnburgiidae'
  • 'Notostrophia belongs to Streptorhynchinae'
  • 'Novellinetes belongs to Strophochonetinae'
  • 'Nubialba belongs to Christianiidae'
  • 'Nucleorhynchia is a subjective synonym of Craigella'
  • 'Nudauris belongs to Paucispiniferini'
  • 'Nudymia is a subjective synonym of Impiacus'
  • 'Nugnecella is a nomen dubium'
  • 'Numericoma belongs to Ephippelasmatidae'
  • 'Nurochonetes belongs to Dagnachonetinae'
  • 'Nushbiella belongs to Siphonotretidae'
  • 'Obolella belongs to Obolellidae'
  • 'Obolellacea is replaced by Obolelloidea'
  • 'Obolellida belongs to Obolellata'
  • 'Obolellidae belongs to Obolelloidea'
  • 'Obolelloidea belongs to Obolellida'
  • 'Obolidae belongs to Linguloidea'
  • 'Obolinae belongs to Obolidae'
  • 'Obolopsis belongs to Obolinae'
  • 'Obolus belongs to Obolinae'
  • 'Ocnerorthis belongs to Eoorthidae'
  • 'Ocorthis is a subjective synonym of Trondorthis'
  • 'Odoratus belongs to Rafinesquininae'
  • 'Oehlertella belongs to Disciniidae'
  • 'Oepikinella is a subjective synonym of Oepikina'
  • 'Oepikites belongs to Obolinae'
  • 'Ogbinia belongs to Chonetellini'
  • 'Oina belongs to Naukatidae'
  • 'Oldhamina belongs to Lyttoniinae'
  • 'Oldhaminella belongs to Lyttoniinae'
  • 'Olentotreta belongs to Acrotretidae'
  • 'Oligomys belongs to Bohemiellidae'
  • 'Oligorachis belongs to Donalosiinae'
  • 'Oligorthis belongs to Plectorthidae'
  • 'Ombonia belongs to Omboniinae'
  • 'Omboniinae belongs to Meekellidae'
  • 'Onavia belongs to Avoniini'
  • 'Oncosarina belongs to Paucispiniferini'
  • 'Onniella belongs to Dalmanellinae'
  • 'Onnizetina belongs to Dalmanellinae'
  • 'Onopordumaria belongs to Levipustulini'
  • 'Onychoplecia belongs to Triplesiidae'
  • 'Onychotreta belongs to Triplesiidae'
  • 'Opikella is a subjective synonym of Leangella'
  • 'Opikina is corrected as Oepikina and belongs to Furcitellinae'
  • 'Opisthotreta belongs to Acrotretidae'
  • 'Opsiconidion belongs to Biernatidae'
  • 'Opisconidion is a misspelling of Opsiconidion'
  • 'Orbicula is replaced by Neocrania'
  • 'Orbiculoidea belongs to Disciniidae'
  • 'Orbiculothyris is a subjective synonym of Schizocrania'
  • 'Orbinaria belongs to Rugaurini'
  • 'Orbithele belongs to Acrothelinae'
  • 'Orhoria is a subjective synonym of Leptaena'
  • 'Orthacea is replaced by Orthoidea'
  • 'Orthambonites belongs to Orthidae'
  • 'Orthida belongs to Rhynchonellata'
  • 'Orthidae belongs to Orthoidea'
  • 'Orthidiella belongs to Orthidiellidae'
  • 'Orthidiellidae belongs to Orthoidea'
  • 'Orthidina belongs to Orthida'
  • 'Orthidium belongs to Orthidiellidae'
  • 'Orthiella belongs to Draboviinae'
  • 'Orthis belongs to Orthidae'
  • 'Orthisocrania belongs to Craniidae'
  • 'Orthoidea belongs to Orthidina'
  • 'Orthopleura belongs to Adectorhynchinae'
  • 'Orthostrophella belongs to Orthidae'
  • 'Orthostrophia belongs to Orthidae'
  • 'Orthotetella belongs to Orthotetellidae'
  • 'Orthotetellidae belongs to Orthotetoidea'
  • 'Orthotetes belongs to Orthotetidae'
  • 'Orthotetida belongs to Strophomenata'
  • 'Orthotetidae belongs to Orthotetoidea'
  • 'Orthotetidina belongs to Orthotetida'
  • 'Orthotetoidea belongs to Orthotetidina'
  • 'Orthotetoides is a subjective synonym of Orthotetes'
  • 'Orthothetina belongs to Meekellinae'
  • 'Orthothrix belongs to Dasyalosiinae'
  • 'Orthotichia belongs to Schizophoriidae'
  • 'Orthotropia belongs to Linoporellidae'
  • 'Orusia belongs to Finkelnburgiidae'
  • 'Oslogonites belongs to Gonambonitidae'
  • 'Ottadalenites is a nomen dubium'
  • 'Ottenbyella belongs to Acrotretidae'
  • 'Otusia belongs to Eoorthidae'
  • 'Ovatia belongs to Auriculispininae'
  • 'Overtonia belongs to Overtoniini'
  • 'Overtoniina belongs to Semicostellini'
  • 'Overtoniinae belongs to Productellidae'
  • 'Overtoniini belongs to Overtoniinae'
  • 'Ovidiella belongs to Trimerellidae'
  • 'Oxlosia belongs to Linguloidea'
  • 'Oxoplecia belongs to Triplesiidae'
  • 'Ozora belongs to Dictyoclostinae'
  • 'Pachyglossella belongs to Glossellinae'
  • 'Pahlenella belongs to Clitambonitidae'
  • 'Palaeobolus belongs to Obolinae'
  • 'Palaeoglossa belongs to Obolinae'
  • 'Palaeoldhamina is a subjective synonym of Loxophragmus'
  • 'Palaeoleptostrophia belongs to Leptostrophiidae'
  • 'Palaeoschizophoria belongs to Schizophoriidae'
  • 'Palaeoschmidtites belongs to Obolinae'
  • 'Palaeostrophomena belongs to Palaeostrophomeninae'
  • 'Palaeostrophomeninae belongs to Leptellinidae'
  • 'Palaeotrimerella belongs to Trimerellidae'
  • 'Paldiskites is a subjective synonym of Apatobolus'
  • 'Palmerhytis is a subjective synonym of Semenewia'
  • 'Panderina belongs to Productorthinae'
  • 'Papiliolinus belongs to Auriculispininae'
  • 'Papillostrophia belongs to Strophodontidae'
  • 'Parabuxtonia is a subjective synonym of Dowhatania'
  • 'Parachonetella belongs to Chonetellini'
  • 'Parachonetes belongs to Parachonetinae'
  • 'Parachonetinae belongs to Strophochonetidae'
  • 'Paracraniops belongs to Craniopsidae'
  • 'Parademonedys belongs to Lamellosiinae'
  • 'Paraderbyia is a subjective synonym of Derbyia'
  • 'Paradinobolus belongs to Trimerellidae'
  • 'Paradolerorthis belongs to Hesperorthidae'
  • 'Parageyerella is a subjective synonym of Sicelia'
  • 'Parajuresania belongs to Juresaniini'
  • 'Parakansuella is a subjective synonym of Kansuella'
  • 'Paralenorthis belongs to Orthidae'
  • 'Paraleptodus is a subjective synonym of Eolyttonia'
  • 'Paraleptostrophia was reranked as Mesoleptostrophia (Paraleptostrophia) and belongs to Mesoleptostrophia'
  • 'Paralyttonia belongs to Rigbyellidae'
  • 'Paramarginatia is a subjective synonym of Marginatia'
  • 'Paramarginifera belongs to Paramarginiferini'
  • 'Paramarginiferini belongs to Productininae'
  • 'Parameekella is a subjective synonym of Paraorthotetina'
  • 'Paramesolobus belongs to Rugosochonetinae'
  • 'Paramonticulifera belongs to Monticuliferinae'
  • 'Paramuirwoodia is a subjective synonym of Duartea'
  • 'Paranisopleurella is a subjective synonym of Ygerodiscus'
  • 'Paraonychoplecia belongs to Triplesiidae'
  • 'Paraorthotetina belongs to Meekellinae'
  • 'Parapholidostrophia belongs to Strophodontidae'
  • 'Paraplicatifera belongs to Costispiniferini'
  • 'Parapulchratia belongs to Productida'
  • 'Parastrophonella belongs to Leptodontellinae'
  • 'Paratreta belongs to Torynelasmatidae'
  • 'Parenteletes belongs to Enteletidae'
  • 'Parmephrix belongs to Chonopectidae'
  • 'Parmorthina belongs to Resserellinae'
  • 'Parmorthis is a subjective synonym of Resserella'
  • 'Paromalomena belongs to Glyptomeninae'
  • 'Paryphella belongs to Paramarginiferini'
  • 'Paterina belongs to Paterinidae'
  • 'Paterinata belongs to Linguliformea'
  • 'Paterinida belongs to Paterinata'
  • 'Paterinidae belongs to Paterinoidea'
  • 'Paterinoidea belongs to Paterinida'
  • 'Paterorthis belongs to Plectorthidae'
  • 'Paterula belongs to Paterulidae'
  • 'Paterulidae belongs to Linguloidea'
  • 'Paucicostella is a nomen dubium'
  • 'Paucicrura belongs to Dalmanellinae'
  • 'Paucispinauria belongs to Grandaurispininae'
  • 'Paucispinifera belongs to Paucispiniferini'
  • 'Paucispiniferini belongs to Marginiferinae'
  • 'Paucistrophia belongs to Protodouvillininae'
  • 'Paurorthidae belongs to Dalmanelloidea'
  • 'Paurorthis belongs to Paurorthidae'
  • 'Pegmatreta is a subjective synonym of Linnarssonia'
  • 'Peleicostella belongs to Isorthinae'
  • 'Pelonomia belongs to Pelonomiinae'
  • 'Pelonomiinae belongs to Taffiidae'
  • 'Peltichia belongs to Enteletidae'
  • 'Pembrostrophia was reranked as Amphistrophia (Pembrostrophia) and belongs to Amphistrophia'
  • 'Peniculauris belongs to Tolmatchoffiini'
  • 'Pentlandina belongs to Furcitellinae'
  • 'Perditocardinia belongs to Perditocardiniinae'
  • 'Perditocardiniinae belongs to Rhipidomellidae'
  • 'Perichonetes belongs to Strophochonetinae'
  • 'Peridalejina belongs to Rhipidomellinae'
  • 'Perigeyerella belongs to Meekellinae'
  • 'Peritrimerella belongs to Trimerellidae'
  • 'Peritritoechia belongs to Polytoechiidae'
  • 'Permianella belongs to Permianellidae'
  • 'Permianellidae belongs to Permianelloidea'
  • 'Permianelloidea belongs to Lyttoniidina'
  • 'Permochonetes belongs to Caenanopliinae'
  • 'Permorthotetes is a subjective synonym of Werriea'
  • 'Permorthotestes is a misspelling of Permorthotetes'
  • 'Permundaria belongs to Schrenkiellinae'
  • 'Petalochonetes belongs to Delepineinae'
  • 'Petasmaia belongs to Lyttoniinae'
  • 'Petrocrania belongs to Craniidae'
  • 'Petroria was reranked as Leptella (Petroria) and belongs to Leptella'
  • 'Phaceloorthis belongs to Giraldiellidae'
  • 'Pharcidodiscus belongs to Semicostellini'
  • 'Philhedra belongs to Craniidae'
  • 'Philhedrella is a subjective synonym of Petrocrania'
  • 'Philippotia is a subjective synonym of Chlupacina'
  • 'Pholidostrophia belongs to Strophodontidae'
  • 'Phragmophora belongs to Prokopiinae'
  • 'Phragmorthidae belongs to Plectorthoidea'
  • 'Phragmorthis belongs to Phragmorthidae'
  • 'Phragmostrophia belongs to Protodouvillininae'
  • 'Physotreta belongs to Acrotretidae'
  • 'Picnotreta belongs to Acrotretidae'
  • 'Piloricilla belongs to Tolmatchoffiini'
  • 'Pionodema belongs to Draboviinae'
  • 'Pionomena belongs to Glyptomeninae'
  • 'Pirgulia belongs to Lyttoniinae'
  • 'Placotriplesia belongs to Triplesiidae'
  • 'Plaesiomyidae belongs to Orthoidea'
  • 'Plaesiomyinae belongs to Plaesiomyidae'
  • 'Plaesiomys belongs to Plaesiomyinae'
  • 'Planicardinia belongs to Mystrophoridae'
  • 'Planihaydenella belongs to Chonetellini'
  • 'Planispina belongs to Teguliferininae'
  • 'Planispina conida belongs to Planispina'
  • 'Planodouvillina is a subjective synonym of Mesodouvillina'
  • 'Planoharknessella is a subjective synonym of Svobodaina'
  • 'Planoproductus belongs to Rugaurini'
  • 'Platycancrinella is a subjective synonym of Cancrinella'
  • 'Platycancrinella grandauris is recombined as Cancrinella grandauris'
  • 'Platyconcha is replaced by Biplatyconcha'
  • 'Platymena belongs to Glyptomeninae'
  • 'Platyorthidae belongs to Dalmanelloidea'
  • 'Platyorthis belongs to Platyorthidae'
  • 'Platyselma belongs to Plicatiferini'
  • 'Platystrophia belongs to Platystrophiidae'
  • 'Platystrophiidae belongs to Plectorthoidea'
  • 'Platytoechia belongs to Polytoechiidae'
  • 'Plebejochonetes belongs to Chonetinae'
  • 'Plectambonitacea is replaced by Plectambonitoidea'
  • 'Plectambonites belongs to Plectambonitinae'
  • 'Plectambonitidae belongs to Plectambonitoidea'
  • 'Plectambonitinae belongs to Plectambonitidae'
  • 'Plectambonitoidea belongs to Strophomenida'
  • 'Plectella belongs to Plectambonitinae'
  • 'Plectodonta belongs to Sowerbyellinae'
  • 'Plectodontella was reranked as Plectodonta (Plectodontella) and belongs to Plectodonta'
  • 'Plectoglossa belongs to Glossellinae'
  • 'Plectorthidae belongs to Plectorthoidea'
  • 'Plectorthis belongs to Plectorthidae'
  • 'Plectorthoidea belongs to Orthidina'
  • 'Plectotreta belongs to Triplesiidae'
  • 'Pleurochonetes belongs to Notiochonetinae'
  • 'Pleurorthis belongs to Nanorthidae'
  • 'Plicaea belongs to Quadratiinae'
  • 'Plicanoplia belongs to Caenanopliinae'
  • 'Plicatifera belongs to Plicatiferini'
  • 'Plicatiferina belongs to Quadratiinae'
  • 'Plicatiferinae belongs to Productellidae'
  • 'Plicatiferini belongs to Plicatiferinae'
  • 'Plicatoderbyia is a subjective synonym of Derbyia'
  • 'Plicatolingula belongs to Problematica'
  • 'Plicochonetes belongs to Plicochonetinae'
  • 'Plicochonetinae belongs to Rugosochonetidae'
  • 'Plicodevonaria is an objective synonym of Devonaria'
  • 'Plicoproductus belongs to Eoproductellinae'
  • 'Plicostropheodonta was reranked as Dictyostrophia (Plicostropheodonta) and belongs to Dictyostrophia'
  • 'Ploughsharella belongs to Productida'
  • 'Poikilosakinae belongs to Lyttoniidae'
  • 'Poikilosakos belongs to Poikilosakinae'
  • 'Poloniproductus belongs to Devonoproductinae'
  • 'Polylasma belongs to Torynelasmatidae'
  • 'Polymorpharia belongs to Institellinae'
  • 'Polytoechia belongs to Polytoechiidae'
  • 'Polytoechiidae belongs to Polytoechioidea'
  • 'Polytoechioidea belongs to Clitambonitidina'
  • 'Pomatotrema belongs to Polytoechiidae'
  • 'Pomeraniotreta belongs to Ephippelasmatidae'
  • 'Pomeromena belongs to Glyptomeninae'
  • 'Pompeckium belongs to Eoorthidae'
  • 'Poramborthidae belongs to Orthoidea'
  • 'Poramborthis belongs to Poramborthidae'
  • 'Portranellidae belongs to Dalmanelloidea'
  • 'Pradochonetes belongs to Dagnachonetinae'
  • 'Praehorridonia belongs to Horridoniini'
  • 'Praewaagenoconcha belongs to Caucasiproductinae'
  • 'Prantlina belongs to Glossorthinae'
  • 'Probolionia belongs to Marginiferini'
  • 'Proboscidella belongs to Proboscidellini'
  • 'Proboscidellini belongs to Striatiferinae'
  • 'Proboscisambon belongs to Glyptomeninae'
  • 'Productella belongs to Productellinae'
  • 'Productella (Hamlingella) was reranked as Hamlingella and belongs to Araksalosiinae'
  • 'Productellana belongs to Sentosiini'
  • 'Productellidae belongs to Productoidea'
  • 'Productellina belongs to Productinini'
  • 'Productellinae belongs to Productellidae'
  • 'Productelloides belongs to Leioproductini'
  • 'Productida belongs to Strophomenata'
  • 'Productidae belongs to Productoidea'
  • 'Productidina belongs to Productida'
  • 'Productina belongs to Productinini'
  • 'Productinae belongs to Productidae'
  • 'Productini belongs to Productinae'
  • 'Productininae belongs to Productellidae'
  • 'Productinini belongs to Productininae'
  • 'Productoidea belongs to Productidina'
  • 'Productorthidae belongs to Orthoidea'
  • 'Productorthinae belongs to Productorthidae'
  • 'Productorthis belongs to Productorthinae'
  • 'Productus belongs to Productini'
  • 'Productus (Haydenella) was reranked as Haydenella and belongs to Chonetellini'
  • 'Productus (Linoproductus) was reranked as Linoproductus and belongs to Linoproductinae'
  • 'Productus (Taeniothaerus) was reranked as Taeniothaerus and belongs to Aulosteginae'
  • 'Productus giganteus is recombined as Gigantoproductus giganteus'
  • 'Prokopia belongs to Prokopiinae'
  • 'Prokopiinae belongs to Dalmanellidae'
  • 'Promarginifera belongs to Retariini'
  • 'Prorichthofenia is a nomen dubium'
  • 'Prorichthofeniinae is an invalid subgroup of Richthofenioidea'
  • 'Prorugaria belongs to Plicochonetinae'
  • 'Proschizophoria belongs to Proschizophoriidae'
  • 'Proschizophoriidae belongs to Dalmanelloidea'
  • 'Prosoponella is a subjective synonym of Trimerella'
  • 'Protambonites belongs to Polytoechiidae'
  • 'Protanidanthus belongs to Anidanthinae'
  • 'Proteguliferina belongs to Teguliferininae'
  • 'Proteorthis belongs to Giraldiellidae'
  • 'Protobolus belongs to Problematica'
  • 'Protochonetes belongs to Protochonetinae'
  • 'Protochonetinae belongs to Strophochonetidae'
  • 'Protocortezorthis belongs to Isorthinae'
  • 'Protocymostrophia was reranked as Cymostrophia (Protocymostrophia) and belongs to Cymostrophia'
  • 'Protodouvillina belongs to Protodouvillininae'
  • 'Protodouvillininae belongs to Douvillinidae'
  • 'Protohesperonomia belongs to Hesperonomiidae'
  • 'Protoleptostrophia belongs to Leptostrophiidae'
  • 'Protomegastrophia belongs to Leptostrophiidae'
  • 'Protomendacella belongs to Draboviinae'
  • 'Protoniella belongs to Paramarginiferini'
  • 'Protophragmapora belongs to Prokopiinae'
  • 'Protorthida belongs to Rhynchonellata'
  • 'Protorthidae belongs to Protorthoidea'
  • 'Protorthis belongs to Protorthidae'
  • 'Protorthoidea belongs to Protorthida'
  • 'Protoshaleria is a subjective synonym of Shaleria'
  • 'Protoskenidiodes is a misspelling of Protoskenidioides'
  • 'Protoskenidioides belongs to Skenidiidae'
  • 'Prototreta belongs to Acrotretidae'
  • 'Psamathopalass belongs to Problematica'
  • 'Pseudoanisopleurella is a subjective synonym of Anisopleurella'
  • 'Pseudoantoquatonia is a misspelling of Pseudoantiquatonia'
  • 'Pseudoantiquatonia belongs to Tyloplectini'
  • 'Pseudoavonia belongs to Costispiniferini'
  • 'Pseudobolus belongs to Obolinae'
  • 'Pseudochonetes belongs to Parachonetinae'
  • 'Pseudocrania belongs to Craniidae'
  • 'Pseudoderbyia is a subjective synonym of Derbyia'
  • 'Pseudodicellomus belongs to Elkaniidae'
  • 'Pseudodicoelosia belongs to Rhipidomellinae'
  • 'Pseudodouvillina is a subjective synonym of Sulcatostrophia'
  • 'Pseudodouvillina euglyphea is recombined as Sulcatostrophia euglyphea'
  • 'Pseudohaydenella belongs to Auriculispininae'
  • 'Pseudoleptellina is a subjective synonym of Kajnaria'
  • 'Pseudoleptodus belongs to Poikilosakinae'
  • 'Pseudolingula belongs to Pseudolingulidae'
  • 'Pseudolingulidae belongs to Linguloidea'
  • 'Pseudolingulidae belongs to Linguloidea'
  • 'Pseudomarginifera is a subjective synonym of Anidanthus'
  • 'Pseudomendacella belongs to Rhipidomellinae'
  • 'Pseudomimella belongs to Plectorthidae'
  • 'Pseudomonticulifera is a subjective synonym of Chilianshania'
  • 'Pseudoorthotetes is a subjective synonym of Orthotetes'
  • 'Pseudopholidops belongs to Craniopsidae'
  • 'Pseudostrophochonetes belongs to Strophochonetinae'
  • 'Pseudostrophomena belongs to Strophomeninae'
  • 'Psiloria belongs to Protorthidae'
  • 'Pterostrophia belongs to Strophodontidae'
  • 'Ptychoglyptinae belongs to Sowerbyellidae'
  • 'Ptychoglyptus belongs to Ptychoglyptinae'
  • 'Ptychopeltis is a subjective synonym of Schizocrania'
  • 'Ptychopeltis incola is recombined as Schizocrania incola'
  • 'Ptychopleurella belongs to Hesperorthidae'
  • 'Pugilis belongs to Dictyoclostinae'
  • 'Pulchratia belongs to Juresaniini'
  • 'Pulsia belongs to Pulsiidae'
  • 'Pulsiidae belongs to Orthotetoidea'
  • 'Pustula belongs to Pustulinae'
  • 'Pustulinae belongs to Echinoconchidae'
  • 'Pygmochonetes belongs to Caenanopliinae'
  • 'Qianjiangella is a subjective synonym of Leptellina'
  • 'Qianomena belongs to Glyptomeninae'
  • 'Quadratia belongs to Quadratiinae'
  • 'Quadratiinae belongs to Araksalosiidae'
  • 'Quadrisonia belongs to Acrotretidae'
  • 'Quadrochonetes belongs to Svalbardiinae'
  • 'Quasithambonia belongs to Siphonotretidae'
  • 'Quebecia is a subjective synonym of Yorkia'
  • 'Quinquenella belongs to Quinquenellinae'
  • 'Quinquenellinae belongs to Rugosochonetidae'
  • 'Quondongia belongs to Furcitellinae'
  • 'Radiomena belongs to Protodouvillininae'
  • 'Rafanoglossa belongs to Glossellinae'
  • 'Rafinesquina belongs to Rafinesquininae'
  • 'Rafinesquina (Playfairia) was reranked as Playfairia and belongs to Strophomenoidea'
  • 'Rafinesquinidae belongs to Strophomenoidea'
  • 'Rafinesquininae belongs to Rafinesquinidae'
  • 'Railtonella belongs to Grorudiidae'
  • 'Railtonella belongs to Grorudiidae'
  • 'Ralia belongs to Donalosiinae'
  • 'Ramavectus belongs to Rhamnariinae'
  • 'Ramovsina belongs to Rhamnariinae'
  • 'Ranorthidae belongs to Plectorthoidea'
  • 'Ranorthis belongs to Ranorthidae'
  • 'Ratburia is a subjective synonym of Striochonetes'
  • 'Raunites belongs to Gonambonitidae'
  • 'Ravozetina belongs to Dalmanellinae'
  • 'Redlichella is a subjective synonym of Acrothele'
  • 'Reedoconcha belongs to Aulosteginae'
  • 'Reeftonia belongs to Cortezorthinae'
  • 'Reinversella was reranked as Inversella (Reinversella) and belongs to Inversella'
  • 'Renaudia belongs to Eodevonariidae'
  • 'Replicoskenidioides belongs to Skenidiidae'
  • 'Resserella belongs to Resserellinae'
  • 'Resserellinae belongs to Dalmanellidae'
  • 'Retaria is a subjective synonym of Kutorginella'
  • 'Retariini belongs to Productinae'
  • 'Retichonetes belongs to Retichonetinae'
  • 'Retichonetinae belongs to Chonetidae'
  • 'Reticulatia belongs to Dictyoclostinae'
  • 'Retimarginifera belongs to Paucispiniferini'
  • 'Retroplexus belongs to Institellinae'
  • 'Reuschella belongs to Harknessellidae'
  • 'Reversella belongs to Leptellininae'
  • 'Rhactorthidae belongs to Plectorthoidea'
  • 'Rhactorthis belongs to Rhactorthidae'
  • 'Rhamnaria belongs to Rhamnariinae'
  • 'Rhamnariinae belongs to Aulostegidae'
  • 'Rhinotreta belongs to Ephippelasmatidae'
  • 'Rhipidomella belongs to Rhipidomellinae'
  • 'Rhipidomellida is replaced by Orthida'
  • 'Rhipidomellidae belongs to Dalmanelloidea'
  • 'Rhipidomellinae belongs to Rhipidomellidae'
  • 'Rhipidomelloides is a subjective synonym of Dalejina'
  • 'Rhipidomena belongs to Rafinesquininae'
  • 'Rhondellina belongs to Acrotretidae'
  • 'Rhynchonellata belongs to Rhynchonelliformea'
  • 'Rhynchonellida belongs to Rhynchonellata'
  • 'Rhynchorthis belongs to Cyclocoeliidae'
  • 'Rhynobolus belongs to Trimerellidae'
  • 'Rhysotreta belongs to Scaphelasmatidae'
  • 'Rhyssochonetes belongs to Dagnachonetinae'
  • 'Rhytialosia belongs to Rhytialosiinae'
  • 'Rhytialosiinae belongs to Araksalosiidae'
  • 'Rhytibulbus belongs to Agelesiinae'
  • 'Rhytiophora belongs to Semicostellini'
  • 'Rhytisia belongs to Incisiini'
  • 'Rhytistrophia was reranked as Leptostrophia (Rhytistrophia) and belongs to Leptostrophia'
  • 'Richthofenia belongs to Richthofeniidae'
  • 'Richthofeniidae belongs to Richthofenioidea'
  • 'Richthofeniinae is an invalid subgroup of Richthofeniidae'
  • 'Richthofenioidea belongs to Lyttoniidina'
  • 'Rigbyella belongs to Rigbyellidae'
  • 'Rigbyellidae belongs to Lyttonioidea'
  • 'Riograndella belongs to Nanorthidae'
  • 'Robertorthis belongs to Eoorthidae'
  • 'Roemerella belongs to Disciniidae'
  • 'Rosobolus belongs to Zhanatellidae'
  • 'Rotundostrophia belongs to Leptostrophiidae'
  • 'Rugaria belongs to Plicochonetinae'
  • 'Rugatia belongs to Dictyoclostinae'
  • 'Rugaurini belongs to Plicatiferinae'
  • 'Rugauris belongs to Rugaurini'
  • 'Rugicostella belongs to Institellinae'
  • 'Rugivestis belongs to Paramarginiferini'
  • 'Rugoclostus belongs to Horridoniini'
  • 'Rugoconcha belongs to Plicatiferini'
  • 'Rugoleptaena belongs to Leptaeninae'
  • 'Rugosochonetes belongs to Rugosochonetinae'
  • 'Rugosochonetidae belongs to Chonetoidea'
  • 'Rugosochonetinae belongs to Rugosochonetidae'
  • 'Rugosomarginifera is a subjective synonym of Spinomarginifera'
  • 'Rugosowerbyella was reranked as Sowerbyella (Rugosowerbyella) and belongs to Sowerbyella'
  • 'Rurambonites belongs to Leptestiidae'
  • 'Rustella is a subjective synonym of Kutorgina'
  • 'Ruthiphiala belongs to Araksalosiinae'
  • 'Rutrumella belongs to Ahtiellinae'
  • 'Saccogonum belongs to Billingsellidae'
  • 'Saetosina is a subjective synonym of Terrakea'
  • 'Saharonetes belongs to Holynetinae'
  • 'Sajakella belongs to Yakovleviini'
  • 'Salacorthis belongs to Platystrophiidae'
  • 'Salanygolina belongs to Cryptotretidae'
  • 'Salopia belongs to Linoporellidae'
  • 'Salopina belongs to Draboviinae'
  • 'Salopinella is a subjective synonym of Salopina'
  • 'Sampo belongs to Leptestiidae'
  • 'Sandia belongs to Breileeniini'
  • 'Sandrella belongs to Quinquenellinae'
  • 'Sanjuanella belongs to Ahtiellinae'
  • 'Sanjuanetes belongs to Strophochonetinae'
  • 'Sanxiaella is a subjective synonym of Pseudopholidops'
  • 'Sarytchevinella belongs to Compressoproductinae'
  • 'Satpakella belongs to Acrotretidae'
  • 'Saucrorthis belongs to Productorthinae'
  • 'Saukrodictya belongs to Saukrodictyidae'
  • 'Saukrodictyidae belongs to Enteletoidea'
  • 'Scacchinella belongs to Scacchinellinae'
  • 'Scacchinellidae belongs to Aulostegoidea'
  • 'Scacchinellinae belongs to Scacchinellidae'
  • 'Scambocris belongs to Problematica'
  • 'Scamnomena belongs to Leptaeninae'
  • 'Scapharina belongs to Incisiini'
  • 'Scaphelasma belongs to Scaphelasmatidae'
  • 'Scaphelasmatidae belongs to Acrotretoidea'
  • 'Scaphorthis belongs to Giraldiellidae'
  • 'Sceletonia belongs to Poikilosakinae'
  • 'Schalidomorthis belongs to Glyptorthidae'
  • 'Schedophyla belongs to Ahtiellinae'
  • 'Schellwienella belongs to Pulsiidae'
  • 'Schistochonetes belongs to Rugosochonetinae'
  • 'Schizambon belongs to Siphonotretidae'
  • 'Schizobolus belongs to Trematidae'
  • 'Schizocrania belongs to Trematidae'
  • 'Schizonema belongs to Hesperorthidae'
  • 'Schizopholis belongs to Acrothelinae'
  • 'Schizophorella belongs to Plectorthidae'
  • 'Schizophoria belongs to Schizophoriidae'
  • 'Schizophoria (Eoschizophoria) was reranked as Eoschizophoria and belongs to Schizophoriidae'
  • 'Schizophoriidae belongs to Enteletoidea'
  • 'Schizopleuronia belongs to Isogrammidae'
  • 'Schizoramma is an objective synonym of Schizonema'
  • 'Schizotreta belongs to Disciniidae'
  • 'Schizotretoides belongs to Acrotretoidea'
  • 'Schmidtites belongs to Obolinae'
  • 'Schrenkiella belongs to Schrenkiellinae'
  • 'Schrenkiellinae belongs to Monticuliferidae'
  • 'Schuchertella belongs to Schuchertellinae'
  • 'Schuchertellidae belongs to Orthotetoidea'
  • 'Schuchertellinae belongs to Schuchertellidae'
  • 'Schuchertellopsis belongs to Schuchertellinae'
  • 'Schuchertina belongs to Kutorginidae'
  • 'Scissicosta belongs to Tolmatchoffiini'
  • 'Scoloconcha belongs to Krotoviini'
  • 'Scutepustula belongs to Pustulinae'
  • 'Selloproductus belongs to Linoproductidae'
  • 'Semenewia belongs to Chonopectidae'
  • 'Semicostella belongs to Semicostellini'
  • 'Semicostellini belongs to Plicatiferinae'
  • 'Semileptagonia is a subjective synonym of Leptagonia'
  • 'Semilingula belongs to Lingulidae'
  • 'Seminucella belongs to Semiproductini'
  • 'Semiplanella belongs to Semiplanini'
  • 'Semiplanini belongs to Gigantoproductinae'
  • 'Semiplanus belongs to Semiplanini'
  • 'Semiproductini belongs to Leioproductinae'
  • 'Semiproductus belongs to Semiproductini'
  • 'Semitreta belongs to Acrotretidae'
  • 'Sentolunia is a subjective synonym of Chonetoidea'
  • 'Sentosia belongs to Sentosiini'
  • 'Sentosiidae belongs to Echinoconchoidea'
  • 'Sentosiinae belongs to Sentosiidae'
  • 'Sentosiini belongs to Sentosiinae'
  • 'Sentosioides belongs to Sentosiini'
  • 'Septachonetes belongs to Holynetinae'
  • 'Septarinia belongs to Pustulinae'
  • 'Septasteges is a subjective synonym of Bilotina'
  • 'Septiconcha belongs to Echinoconchoidea'
  • 'Septorthis belongs to Cremnorthidae'
  • 'Serbarinia belongs to Gigantoproductini'
  • 'Sericoidea is a subjective synonym of Chonetoidea'
  • 'Serratocrista belongs to Schuchertellinae'
  • 'Seseloisi is a misspelling of Seseloidia'
  • 'Seseloidia belongs to Richthofeniidae'
  • 'Sestropoma belongs to Cyclacanthariinae'
  • 'Setigerites belongs to Buxtoniini'
  • 'Severginella belongs to Plectorthidae'
  • 'Shagamella belongs to Protochonetinae'
  • 'Shaleria belongs to Shaleriidae'
  • 'Shaleria (Janiomya) belongs to Shaleria'
  • 'Shaleriella belongs to Shaleriidae'
  • 'Shaleriidae belongs to Strophomenoidea'
  • 'Shanxiproductus belongs to Paucispiniferini'
  • 'Shiqianella is an objective synonym of Spinochonetes'
  • 'Shiragia is a subjective synonym of Bohemiella'
  • 'Shishapangmaella is a subjective synonym of Dowhatania'
  • 'Shlyginia belongs to Leptellininae'
  • 'Shoshonorthis belongs to Nanorthidae'
  • 'Siberistrophia is a subjective synonym of Protoleptostrophia'
  • 'Sibiria belongs to Trematobolidae'
  • 'Sicelia belongs to Meekellinae'
  • 'Sicularia belongs to Hercosiidae'
  • 'Sigmelasma belongs to Wangyuiidae'
  • 'Sigopallus is a subjective synonym of Paucicrura'
  • 'Simplicarina belongs to Incisiini'
  • 'Sinochonetes belongs to Dagnachonetinae'
  • 'Sinoglossa belongs to Obolinae'
  • 'Sinoproductella belongs to Productellinae'
  • 'Sinorthis belongs to Orthidae'
  • 'Sinoshaleria is a subjective synonym of Malurostrophia'
  • 'Sinostrophia belongs to Mesodouvillininae'
  • 'Sinotrimerella belongs to Trimerellidae'
  • 'Sinuatella belongs to Institellinae'
  • 'Sinuatellidae is a subjective synonym of Institellinae'
  • 'Siphonobolus belongs to Siphonotretidae'
  • 'Siphonosia belongs to Siphonosiinae'
  • 'Siphonosiinae belongs to Linoproductidae'
  • 'Siphonotreta belongs to Siphonotretidae'
  • 'Siphonotretella belongs to Siphonotretidae'
  • 'Siphonotretida belongs to Lingulata'
  • 'Siphonotretidae belongs to Siphonotretoidea'
  • 'Siphonotretoidea belongs to Siphonotretida'
  • 'Skenidiidae belongs to Skenidioidea'
  • 'Skenidioidea belongs to Protorthida'
  • 'Skenidioides belongs to Skenidiidae'
  • 'Skenidium belongs to Skenidiidae'
  • 'Smeathenella belongs to Harknessellidae'
  • 'Sokolskya belongs to Rugosochonetinae'
  • 'Sommeriella was reranked as Neochonetes (Sommeriella) and belongs to Neochonetes'
  • 'Sonculina is a subjective synonym of Mimella'
  • 'Songzichonetes belongs to Caenanopliinae'
  • 'Soudleyella is a subjective synonym of Onniella'
  • 'Sowerbina is a subjective synonym of Horridonia'
  • 'Sowerbyella belongs to Sowerbyellinae'
  • 'Sowerbyellidae belongs to Plectambonitoidea'
  • 'Sowerbyellinae belongs to Sowerbyellidae'
  • 'Sowerbyites belongs to Syndielasmatidae'
  • 'Spanodonta belongs to Taffiinae'
  • 'Sphenalosia belongs to Strophalosiinae'
  • 'Sphenophragmus belongs to Draboviinae'
  • 'Sphenosteges belongs to Echinosteginae'
  • 'Spinarella belongs to Paucispiniferini'
  • 'Spinauris belongs to Waagenoconchini'
  • 'Spinifrons belongs to Tolmatchoffiini'
  • 'Spinilingula belongs to Obolinae'
  • 'Spinocarinifera belongs to Semiproductini'
  • 'Spinochonetes belongs to Strophochonetinae'
  • 'Spinolyttonia is a subjective synonym of Leptodus'
  • 'Spinomarginifera belongs to Marginiferini'
  • 'Spinorugifera belongs to Levitusini'
  • 'Spinostrophia belongs to Leptodontellinae'
  • 'Spinulicosta belongs to Productellinae'
  • 'Spinulothele belongs to Acrothelinae'
  • 'Spirifer (Spirisosium) was reranked as Spirisosium and belongs to Echinosteginae'
  • 'Spitzbergenia belongs to Auriculispininae'
  • 'Spondyglossella belongs to Glossellinae'
  • 'Spondylotreta belongs to Acrotretidae'
  • 'Spuriosa belongs to Rhamnariinae'
  • 'Spyridiophora belongs to Spyridiophorini'
  • 'Spyridiophoridae was reranked as the tribe Spyridiophorini and belongs to Productinae'
  • 'Squamaria belongs to Tolmatchoffiini'
  • 'Squamatina belongs to Parachonetinae'
  • 'Squamilingulella belongs to Obolinae'
  • 'Stainbrookia belongs to Rhipidomellinae'
  • 'Stauromata is a subjective synonym of Dyoros'
  • 'Stauromata esoterica is recombined as Dyoros esoterica'
  • 'Stegacanthia belongs to Sentosiini'
  • 'Steinhagella belongs to Rhytialosiinae'
  • 'Stelckia belongs to Productellinae'
  • 'Stepanoconchus belongs to Echinoconchini'
  • 'Stepanoviella belongs to Grandaurispininae'
  • 'Stereochia belongs to Dictyoclostinae'
  • 'Stictozoster belongs to Costispiniferini'
  • 'Strictozoster is a misspelling of Stictozoster'
  • 'Stilpnotreta belongs to Acrotretidae'
  • 'Stipulina belongs to Agelesiinae'
  • 'Streptis belongs to Triplesiidae'
  • 'Streptopomum belongs to Derbyiidae'
  • 'Streptorhynchinae belongs to Schuchertellidae'
  • 'Streptorhynchus belongs to Streptorhynchinae'
  • 'Striatifera belongs to Striatiferini'
  • 'Striatiferinae belongs to Monticuliferidae'
  • 'Striatiferini belongs to Striatiferinae'
  • 'Striatochonetes belongs to Devonochonetinae'
  • 'Striatoproductella belongs to Eoproductellinae'
  • 'Striatospica belongs to Schrenkiellinae'
  • 'Striirichthofenia belongs to Richthofeniidae'
  • 'Striochonetes belongs to Striochonetinae'
  • 'Striochonetinae belongs to Rugosochonetidae'
  • 'Strixella belongs to Rhipidomellinae'
  • 'Strophalosia belongs to Strophalosiinae'
  • 'Strophalosia (Bilotina) was reranked as Bilotina and belongs to Juresaniini'
  • 'Strophalosia (Girlasia) was reranked as Girlasia and belongs to Echinosteginae'
  • 'Strophalosiella belongs to Echinosteginae'
  • 'Strophalosiidae belongs to Strophalosioidea'
  • 'Strophalosiidina belongs to Productida'
  • 'Strophalosiina belongs to Echinosteginae'
  • 'Strophalosiinae belongs to Strophalosiidae'
  • 'Strophalosioidea belongs to Strophalosiidina'
  • 'Stropheodonta is corrected as Strophodonta and belongs to Strophodontidae'
  • 'Stropheodonta (Rhenostrophia) was reranked as Rhenostrophia and belongs to Strophomenoidea'
  • 'Strophochonetes belongs to Strophochonetinae'
  • 'Strophochonetidae belongs to Chonetoidea'
  • 'Strophochonetinae belongs to Strophochonetidae'
  • 'Strophodontidae belongs to Strophomenoidea'
  • 'Strophomena belongs to Strophomeninae'
  • 'Strophomenacea is replaced by Strophomenoidea'
  • 'Strophomenida belongs to Strophomenata'
  • 'Strophomenidae belongs to Strophomenoidea'
  • 'Strophomeninae belongs to Strophomenidae'
  • 'Strophomenoidea belongs to Strophomenida'
  • 'Strophonella belongs to Strophonellidae'
  • 'Strophonella (Quasistrophonella) belongs to Strophonella'
  • 'Strophonellidae belongs to Strophomenoidea'
  • 'Strophonellites is a subjective synonym of Amphistrophia'
  • 'Strophonelloides belongs to Strophodontidae'
  • 'Strophoprion is a subjective synonym of Strophonella'
  • 'Strophoproductus belongs to Caucasiproductinae'
  • 'Strophorichthofenia belongs to Hercosiidae'
  • 'Subglobosochonetes belongs to Caenanopliinae'
  • 'Substriatifera is a subjective synonym of Compressoproductus'
  • 'Subtaeniothaerus belongs to Strophalosiinae'
  • 'Sulcataria belongs to Svalbardiinae'
  • 'Sulcatorthis belongs to Orthidae'
  • 'Sulcatostrophia belongs to Leptodontellinae'
  • 'Sulcirugaria belongs to Plicochonetinae'
  • 'Svalbardia belongs to Svalbardiinae'
  • 'Svalbardiinae belongs to Rugosochonetidae'
  • 'Svalbardoproductus belongs to Retariini'
  • 'Svobodaina belongs to Heterorthidae'
  • 'Swantonia belongs to Naukatidae'
  • 'Syndielasma belongs to Syndielasmatidae'
  • 'Syndielasmatidae belongs to Plectambonitoidea'
  • 'Syntrophodonta belongs to Strophomenoidea'
  • 'Taemostrophia belongs to Protodouvillininae'
  • 'Taffia belongs to Taffiinae'
  • 'Taffiidae belongs to Plectambonitoidea'
  • 'Taffiinae belongs to Taffiidae'
  • 'Tafilaltia belongs to Heterorthidae'
  • 'Taimyropsis belongs to Streptorhynchinae'
  • 'Talasoproductus belongs to Semiplanini'
  • 'Talentella belongs to Draboviinae'
  • 'Taleoleptaena belongs to Leptaenoideidae'
  • 'Tapajotia belongs to Orthotetidae'
  • 'Taphrodonta belongs to Taphrodontinae'
  • 'Taphrodontinae belongs to Plectambonitidae'
  • 'Taphrorthis belongs to Orthidae'
  • 'Taphrosestria belongs to Cyclacanthariinae'
  • 'Tarfaya belongs to Heterorthidae'
  • 'Tarutiglossa belongs to Pseudolingulidae'
  • 'Tashanomena belongs to Teratelasminae'
  • 'Tasmanorthidae belongs to Plectorthoidea'
  • 'Tasmanorthis belongs to Tasmanorthidae'
  • 'Tastaria is a subjective synonym of Protoleptostrophia'
  • 'Tazzarinia belongs to Giraldiellidae'
  • 'Tchadania belongs to Leptaeninae'
  • 'Tectarea belongs to Gemmellaroiidae'
  • 'Tegulifera is replaced by Teguliferina'
  • 'Teguliferina belongs to Teguliferininae'
  • 'Teguliferinidae was reranked as the subfamily Teguliferininae and belongs to Cyclacanthariidae'
  • 'Teichertina belongs to Dicoelosiidae'
  • 'Teichostrophia belongs to Protodouvillininae'
  • 'Telaeoshaleria belongs to Protodouvillininae'
  • 'Teleoproductus belongs to Auriculispininae'
  • 'Templeellinae belongs to Dalmanellidae'
  • 'Tenuichonetes belongs to Capillomesolobinae'
  • 'Teratelasma belongs to Teratelasminae'
  • 'Teratelasmella belongs to Furcitellinae'
  • 'Teratelasminae belongs to Glyptomenidae'
  • 'Terrakea belongs to Grandaurispininae'
  • 'Tesuquea belongs to Retariini'
  • 'Tetraodontella belongs to Grorudiidae'
  • 'Tetraphalerella was reranked as Strophomena (Tetraphalerella) and belongs to Strophomena' according to Wang 1949
  • 'Tetraphalerella was reranked as Strophomena (Tetraphalerella) and belongs to Strophomena'
  • 'Thaerodonta is a subjective synonym of Eochonetes'
  • 'Thamnosia belongs to Retariini'
  • 'Thiemella belongs to Rhipidomellinae'
  • 'Thomasella belongs to Institiferini'
  • 'Thuleproductus is a subjective synonym of Thamnosia'
  • 'Thysanobolus is a subjective synonym of Thysanotos'
  • 'Thysanotos belongs to Zhanatellidae'
  • 'Tilasia belongs to Elkaniidae'
  • 'Timalina belongs to Linguloidea'
  • 'Tissintia belongs to Heterorthidae'
  • 'Titanambonites belongs to Palaeostrophomeninae'
  • 'Titanaria belongs to Gigantoproductini'
  • 'Titanomena belongs to Furcitellinae'
  • 'Tityrophoria belongs to Horridoniini'
  • 'Tivertonia belongs to Svalbardiinae'
  • 'Tobejalotreta belongs to Scaphelasmatidae'
  • 'Tolmatchoffia belongs to Tolmatchoffiini'
  • 'Tolmatchoffiini belongs to Buxtoniinae'
  • 'Tomasina belongs to Linguloidea'
  • 'Tomilia belongs to Tolmatchoffiini'
  • 'Tomiproductus belongs to Tolmatchoffiini'
  • 'Toquimia belongs to Palaeostrophomeninae'
  • 'Tornquistia belongs to Anopliinae'
  • 'Torynelasma belongs to Torynelasmatidae'
  • 'Torynelasmatidae belongs to Acrotretoidea'
  • 'Tourmakeadia belongs to Taffiinae'
  • 'Toxorthis belongs to Wangyuiidae'
  • 'Transennatia belongs to Paucispiniferini'
  • 'Treioria belongs to Hesperonomiidae'
  • 'Trematidae belongs to Discinoidea'
  • 'Trematis belongs to Trematidae'
  • 'Trematobolidae belongs to Obolelloidea'
  • 'Trematobolus belongs to Trematobolidae'
  • 'Trematorthis belongs to Orthidiellidae'
  • 'Trematosia belongs to Nisusiidae'
  • 'Treptotreta belongs to Acrotretidae'
  • 'Trichochonetes belongs to Holynetinae'
  • 'Trigonoglossa belongs to Obolinae'
  • 'Trigrammaria belongs to Furcitellinae'
  • 'Trilobostrophia belongs to Strophodontidae'
  • 'Trimerella belongs to Trimerellidae'
  • 'Trimerellida belongs to Craniata'
  • 'Trimerellidae belongs to Trimerelloidea'
  • 'Trimerelloidea belongs to Trimerellida'
  • 'Trimurellina was reranked as Kassinella (Trimurellina) and belongs to Kassinella'
  • 'Triplesia belongs to Triplesiidae'
  • 'Triplesiidae belongs to Triplesioidea'
  • 'Triplesiidina belongs to Orthotetida'
  • 'Triplesioidea belongs to Triplesiidina'
  • 'Tritoechia belongs to Polytoechiidae'
  • 'Trondorthis belongs to Orthidae'
  • 'Tropidelasma belongs to Streptorhynchinae'
  • 'Tropidoglossa belongs to Zhanatellidae'
  • 'Tropidothyris belongs to Skenidiidae'
  • 'Trucizetina belongs to Dalmanellinae'
  • 'Truncalosia belongs to Donalosiinae'
  • 'Truncatenia is a subjective synonym of Licharewiella'
  • 'Tschernyschewia belongs to Tschernyschewiinae'
  • 'Tschernyschewiidae was reranked as the subfamily Tschernyschewiinae and belongs to Scacchinellidae'
  • 'Tubaria belongs to Retariini'
  • 'Tuberella is replaced by Anopliella'
  • 'Tuberella is a subjective synonym of Markamia'
  • 'Tuberella tangxiangensis is recombined as Anopliella tangxiangensis'
  • 'Tubersulculinae is a subjective synonym of Costispiniferini'
  • 'Tubersulculus belongs to Costispiniferini'
  • 'Tubulostrophia belongs to Leptostrophiidae'
  • 'Tudiaophomena belongs to Leptostrophiidae'
  • 'Tulcumbella belongs to Chonostrophiidae'
  • 'Tunisiglossa belongs to Glossellinae'
  • 'Turarella is a nomen dubium'
  • 'Turgenostrophia is a subjective synonym of Leptaena'
  • 'Turgenostrophia rara is recombined as Leptaena rara'
  • 'Turriculum is a subjective synonym of Geyerella'
  • 'Tuvaechonetes belongs to Leptostrophiidae'
  • 'Tuvaestrophia belongs to Leptostrophiidae'
  • 'Tuvinia belongs to Orthidiellidae'
  • 'Tyersella belongs to Isorthinae'
  • 'Tylambonites is a subjective synonym of Chaganella'
  • 'Tylambonites speciosa is recombined as Chaganella speciosa'
  • 'Tyloplecta belongs to Tyloplectini'
  • 'Tyloplectini belongs to Leioproductinae'
  • 'Tyronella belongs to Tyronellidae'
  • 'Tyronellidae belongs to Dalmanelloidea'
  • 'Ujukites belongs to Palaeostrophomeninae'
  • 'Ukoa belongs to Plectambonitoidea'
  • 'Umboanctus belongs to Tolmatchoffiini'
  • 'Uncisteges is a subjective synonym of Urushtenoidea'
  • 'Undaria belongs to Auriculispininae'
  • 'Undellaria belongs to Auriculispininae'
  • 'Undiferina belongs to Eoconulidae'
  • 'Undulella belongs to Undulellinae'
  • 'Undelella is a misspelling of Undulella'
  • 'Undulellinae belongs to Rugosochonetidae'
  • 'Uraloconchus is a subjective synonym of Markamia'
  • 'Uraloproductus belongs to Productida'
  • 'Urushtenia belongs to Chonosteginae'
  • 'Urushtenoidea belongs to Chonosteginae'
  • 'Ussunia belongs to Ussuniidae'
  • 'Ussuniidae belongs to Trimerelloidea'
  • 'Vaculina belongs to Lingulellotretidae'
  • 'Valcourea belongs to Plaesiomyinae'
  • 'Valdaria belongs to Chilidiopsinae'
  • 'Vallomyonia belongs to Monelasmiinae'
  • 'Vandalotreta belongs to Acrotretidae'
  • 'Vediproductus belongs to Juresaniini'
  • 'Veeversalosia belongs to Rhytialosiinae'
  • 'Veliseptum belongs to Ephippelasmatidae'
  • 'Vellamo belongs to Clitambonitidae'
  • 'Velostrophia belongs to Leptostrophiidae'
  • 'Verchojania belongs to Levipustulini'
  • 'Villicundella is a subjective synonym of Hirnantia'
  • 'Viodostrophia belongs to Leptostrophiidae'
  • 'Visbyella belongs to Resserellinae'
  • 'Vitiliproductus belongs to Auriculispininae'
  • 'Volborthia belongs to Elkaniidae'
  • 'Waagenites belongs to Rugosochonetinae'
  • 'Waagenoconcha belongs to Waagenoconchini'
  • 'Waagenoconcha (Gruntoconcha) belongs to Waagenoconcha'
  • 'Waagenoconchini belongs to Juresaniinae'
  • 'Wadiglossa belongs to Pseudolingulidae'
  • 'Walcottina is a subjective synonym of Micromitra'
  • 'Wangyuia belongs to Wangyuiidae'
  • 'Wangyuiidae belongs to Plectorthoidea'
  • 'Wardakia is a subjective synonym of Derbyia'
  • 'Waterhouseiella belongs to Rugosochonetinae'
  • 'Werriea belongs to Orthotetidae'
  • 'Westonia belongs to Obolinae'
  • 'Westonisca belongs to Obolinae'
  • 'Westralicrania is a subjective synonym of Danocrania'
  • 'Whidbornella belongs to Araksalosiinae'
  • 'Whittardia belongs to Whittardiidae'
  • 'Whittardiidae belongs to Orthoidea'
  • 'Wimanella belongs to Bohemiellidae'
  • 'Wimanoconcha is a subjective synonym of Waagenoconcha'
  • 'Wiradjuriella is a subjective synonym of Mabella'
  • 'Wooramella belongs to Strophalosioidea'
  • 'Wulongella belongs to Harknessellidae'
  • 'Wyatkina belongs to Aulosteginae'
  • 'Wyndhamia belongs to Dasyalosiinae'
  • 'Xenambonites belongs to Xenambonitinae'
  • 'Xenambonitidae belongs to Plectambonitoidea'
  • 'Xenambonitinae belongs to Xenambonitidae'
  • 'Xenizostrophia is a subjective synonym of Carinastrophia'
  • 'Xenorthis belongs to Billingsellidae'
  • 'Xenosteges belongs to Echinosteginae'
  • 'Xenostrophia is a subjective synonym of Nadiastrophia'
  • 'Xestosia belongs to Paucispiniferini'
  • 'Xinanorthis belongs to Nanorthidae'
  • 'Xinjiangiproductus belongs to Gigantoproductini'
  • 'Xinshaoproductus belongs to Tolmatchoffiini'
  • 'Xystostrophia belongs to Chilidiopsinae'
  • 'Yakovlevia belongs to Yakovleviini'
  • 'Yakovleviini belongs to Plicatiferinae'
  • 'Yanguania belongs to Semiproductini'
  • 'Yichangorthis is a subjective synonym of Sinorthis'
  • 'Yidurella belongs to Trimerellidae'
  • 'Yorkia belongs to Kutorginidae'
  • 'Yuanbaella is a subjective synonym of Calyptolepta'
  • 'Yunnanoleptaena is a subjective synonym of Rugoleptaena'
  • 'Zhanatella belongs to Zhanatellidae'
  • 'Zhantella is a misspelling of Zhanatella'
  • 'Zhanatellidae belongs to Linguloidea'
  • 'Zhejiangorthis is a nomen dubium'
  • 'Zhenania belongs to Monticuliferinae'
  • 'Zhexichonetes belongs to Svalbardiinae'
  • 'Zia belongs to Anidanthinae'
  • 'Zlichopyramis belongs to Resserellinae'
  • 'Zophostrophia belongs to Leptodontellinae'