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Orthoidea

Rhynchonellata - Orthida

Synonyms
Synonymy list
YearName and author
1852Orthoidea Woodward
1852Orthacea Woodward and Schuchert
1933Orthacea Phleger, Jr. p. 7
1934Orthacea Opik
1952Orthacea Henningsmoen
1953Orthacea Alikhova
1956Orthacea Oraspold
1959Orthacea Oraspold
1964Orthoidea Neuman
1974Orthacea Neuman and Bruton
1976Orthacea Cooper p. 284
1977Orthacea Mitchell
1982Malinella Andreeva p. 52
1982Orthacea Owen and Harper
1982Orthacea Wright
1984Orthacea Bruton et al.
1989Orthacea Zhang p. 56
1990Orthacea Potter
1997Orthoidea Jin and Chatterton
2000Orthoidea Williams et al. p. 724
2002Bajanorthis Sepkoski
2002Malinella Sepkoski
2002Nugnecella Sepkoski
2002Ottadalenites Sepkoski
2002Turarella Sepkoski
2002Zhejiangorthis Sepkoski
2003Orthoidea Benedetto
2005Orthoidea Zhan and Jin p. 9
2008Orthoidea Zuykov and Butts
2008Orthoidea Zuykov et al.
2009Orthoidea Popov et al.
2010Orthoidea Hints
2011Orthoidea Hansen and Holmer
2011Orthoidea Rubel
2014Orthoidea Hints
2014Orthoidea Jakobsen et al.
2016Orthoidea Paškevičius and Hints
2017Orthoidea Liljeroth et al.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
Lophophorata
PanbrachiopodaCarlson and Cohen 2020
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderOrthidinaSchuchert and Cooper 1932
superfamilyOrthoideaWoodward 1852
superfamilyOrthoideaWoodward 1852

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Superfm. †Orthoidea Woodward 1852
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Fm. †Anomalorthidae Ulrich and Cooper 1936
+
G. †Alimbella Andreeva 1960
G. †Anomalorthis Ulrich and Cooper 1936
+
Anomalorthis lonensis Walcott 1884
Anomalorthis nevadensis Ulrich and Cooper 1938
Anomalorthis oklahomensis Ulrich and Cooper 1938
Anomalorthis resoi Ross 1970
Anomalorthis rossi Hansen and Holmer 2011
Anomalorthis utahensis Ulrich and Cooper 1936
G. †Medessia
Fm. †Archaeorthidae Williams et al. 2007
+
G. †Archaeorthis Schuchert and Cooper 1931
+
Archaeorthis altaica Rozman and Severgina 1983
Archaeorthis christianiae Kjerulf 1865
Archaeorthis costellata Ulrich and Cooper 1938
Archaeorthis electra Billings 1865
Archaeorthis elongata Ulrich and Cooper 1936
Archaeorthis globosa Williams and Curry 1985
Archaeorthis groenlandica Poulsen 1937
Archaeorthis major Nikitina et al. 2006
Archaeorthis subcarinata Laurie 1980
Archaeorthis wimani Walcott 1905
G. †Cyrtonotella Schuchert and Cooper 1931
+
Cyrtonotella kuckersiana Wysogorski 1900
+
+
Invalid names: Orthis laine Opik 1930 [synonym]
Cyrtonotella semicircularis Eichwald 1829
G. †Diplonorthis Mitchell 1972
+
Diplonorthis portlocki Mitchell 1977
G. †Nicoloidea Zeng 1987
G. †Nothorthis Ulrich and Cooper 1938
+
Nothorthis delicatula Ulrich and Cooper 1938
Nothorthis kinderlensis Andreeva 1960
Nothorthis marginata Benedetto et al. 2003
Nothorthis perplexa Xu and Liu 1984
Nothorthis subpyramidalis Hansen and Holmer 2011
Nothorthis tarda Cooper 1956
Nothorthis tarda lata Williams 1962
Invalid names: Altorthis Andreeva 1960 [synonym]
G. †Pleurorthis Cooper 1956
+
Invalid names: Ambardella [synonym]
G. †Riograndella Kobayashi 1937
G. †Xinanorthis Xu and Liu 1974
Fm. †Bohemiellidae Havlicek 1977
+
G. †Bohemiella Schuchert and Cooper 1931
+
Bohemiella romingeri Barrande 1848
Invalid names: Shiragia [synonym]
G. †Cymbricia Roberts and Jell 1990
+
Cymbricia spinicostata Roberts and Jell 1990
G. †Diraphora
+
Diraphora arrojosensis Cooper et al. 1952
Diraphora dyunyin Kruse 1990
Diraphora simplex Popov 1984
G. †Murrinyinella Kruse 1990
+
Murrinyinella garradin Kruse 1990
G. †Oligomys
G. †Wimanella Walcott 1908
+
Wimanella highlandensis Walcott 1886
Wimanella inyoensis Walcott 1908
Wimanella maladensis Resser 1939
Wimanella nautes Walcott 1912
Wimanella rara Walcott 1908
Wimanella seges Kruse 1990
Wimanella shelbyensis Walcott 1908
Wimanella simplex Walcott 1908
Wimanella spencei Walcott 1912
Wimanella tricavata Roberts and Jell 1990
Fm. †Cathaysiorthidae Rong et al. 2013
+
G. †Asturorthis Villas and Cocks 1996
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Asturorthis sarreoensis Villas and Cocks 1996
G. †Cathaysiorthis Rong et al. 2008
+
Cathaysiorthis enorme Laurie 1991
Cathaysiorthis xichuanensis Huang et al. 2019
Cathaysiorthis yushanensis Zeng and Hu 1997
Fm. †Glyptorthidae Schuchert and Cooper 1931
+
G. †Bassettella Zykov and Butts 2008
+
Bassettella alata Hints 2010
Bassettella gracilis Zuykov and Butts 2008
G. †Eridorthis Foerste 1909
+
Eridorthis australis Percival 1991
Eridorthis inexpecta Cooper 1956
Eridorthis nicklesi Foerste 1909
G. †Glyptorthis Foerste 1914
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Glyptorthis alta Cooper 1956
Glyptorthis assimilis Cooper 1956
Glyptorthis balclatchiensis Davidson 1883
Glyptorthis balcletchiensis Davidson 1883
Glyptorthis bellarugosa Conrad 1843
Glyptorthis bellatula Cooper 1956
Glyptorthis cataclina Zeng 1987
Glyptorthis costellata Cooper 1956
Glyptorthis crenulata Cooper 1956
Glyptorthis crispa M'Coy 1846
Glyptorthis crispata Emmons 1842
Glyptorthis daytonensis Foerste 1887
Glyptorthis equiconvexa Cooper 1956
Glyptorthis fausta Foerste 1887
Glyptorthis glaseri Alberstadt 1973
Glyptorthis glypta Cooper 1956
Glyptorthis imbrex Havlicek and Branisa 1980
Glyptorthis irregularis Cooper 1956
Glyptorthis irrupta Rubel 1962
Glyptorthis marilara Li and Copper 2006
Glyptorthis maritima Wright 1964
Glyptorthis obesa Cooper 1956
Glyptorthis papillosa Jin and Harper 2024
Glyptorthis plana Rõõmusoks 1964
Glyptorthis pulchra Wang 1949
Glyptorthis sarcina Zhan and Jin 2005
Glyptorthis senecta Cooper 1956
Glyptorthis splendens Cocks 2014
Glyptorthis squamata Rõõmusoks 1964
Glyptorthis sulcata Cooper 1956
Glyptorthis uncinata Cooper 1956
Glyptorthis uniformis Cooper 1956
+
Invalid names: Glyptorthis virginica Cooper 1956 [synonym]
Glyptorthis vidari Baarli 1995
Glyptorthis viriosa Williams 1974
+
Lomatorthis mimula Williams and Curry 1985
G. †Parisorthis Zhan and Jin 2005
+
Parisorthis dischidanteris Zhan and Jin 2005
G. †Spinorthis Wright 1964
+
Spinorthis geniculata Wright 1964
Fm. †Hesperonomiidae Ulrich and Cooper 1936
+
G. †Hesperonomia Ulrich and Cooper 1936
+
Hesperonomia antelopensis Ulrich and Cooper 1936
Hesperonomia crassa Ulrich and Cooper 1936
Hesperonomia nemea Hall and Whitfield 1877
Hesperonomia orientalis Benedetto 1998
Hesperonomia planidorsalis Ulrich and Cooper 1936
Hesperonomia subtransversa Ulrich and Cooper 1938
Hesperonomia uzunbulakensis Nikitina et al. 2006
+
Hesperonomiella arcuata Benedetto 2003
Hesperonomiella porcias Walcott 1924
Hesperonomiella uzunbulakensis Nikitina et al. 2006
Invalid names: Engenella [synonym]
G. †Mollesella Benedetto 2003
+
Mollesella planiventralis Benedetto 2003
G. †Monorthis
+
Monorthis menapiae Davidson 1868
Monorthis transversa Benedetto 2003
+
Protohesperonomia resupinata Williams and Curry 1985
G. †Treioria
+
Treioria chaulioda Neuman and Bates 1978
G. †Zhanorthis Popov and Cocks 2017
+
Zhanorthis gerdkuhensis Popov and Cocks 2017
Fm. †Hesperorthidae Schuchert and Cooper 1931
+
G. †Barbarorthis Opik 1934
+
Barbarorthis laurentina Billings 1857
Barbarorthis porkuniensis Oraspold 1959
G. †Dolerorthis Schuchert and Cooper 1931
+
Dolerorthis flabellites Foerste 1889
Dolerorthis intercostata de Sowerby and Murchison 1839
Dolerorthis interplicata Foerste 1909
Dolerorthis multicostellata Rong et al. 2013
Dolerorthis nadruvensis Paškevičius and Hints 2016
Dolerorthis plicata de Sowerby and Murchison 1839
Dolerorthis praeclara Temple 1968
Dolerorthis pristina Popov et al. 2002
Dolerorthis psygma Lamont and Gilbert 1945
Dolerorthis rankini Davidson 1883
Dolerorthis rustica Sowerby 1839
Dolerorthis savagei Amsden 1974
Dolerorthis sowerbyana Davidson 1871
Dolerorthis sowerbyiana Davidson 1869
Invalid names: Altaeorthis Severgina 1967 [synonym], Munhella Neuman 1971 [synonym]
G. †Flabellitesia Zhang 1989
+
Flabellitesia adaia Li and Copper 2006
Flabellitesia kessei Boucot et al. 1988
G. †Hesperorthis Schuchert and Cooper 1931
+
Hesperorthis australis Cooper 1956
Hesperorthis avalanchensis Jin and Chatterton 1997
Hesperorthis barbata Percival 1991
Hesperorthis biconvexa Stigall Rode 2005
Hesperorthis costalis Hall 1847
Hesperorthis davidsoni de Verneuil 1845
Hesperorthis dubia Cooper 1956
Hesperorthis gotlandica Schuchert and Cooper 1932
Hesperorthis ignicula Raymond 1905
Hesperorthis latecostata Rozman 1977
Hesperorthis laurentina Billings 1857
Hesperorthis leinsterensis Liljeroth et al. 2017
Hesperorthis martinssoni Bassett and Cocks 1974
Hesperorthis matutina Cooper 1956
Hesperorthis mucronata Oraspold 1959
Hesperorthis onniensis Whittard and Barker 1950
Hesperorthis pyramidalis Twenhofel 1928
Hesperorthis rae Oraspold 1956
Hesperorthis sulcata Cooper 1956
Hesperorthis tricenaria Conrad 1843
G. †Lordorthis Ross 1959
+
Lordorthis variabilis Ross 1959
G. †Ptychopleurella Schuchert and Cooper 1931
+
Ptychopleurella aleksandrovae Nikitin et al. 1996
Ptychopleurella angulaticostata Jin and Chatterton 1997
Ptychopleurella arthuri Pestana 1960
Ptychopleurella bouchardi Davidson 1847
Ptychopleurella decretoria Percival 1991
Ptychopleurella erecta Rubel 1962
Ptychopleurella kleinhamplei Ross and Barnes 1967
Ptychopleurella lamellosa Raymond 1905
Ptychopleurella lapworthi Davidson 1883
+
Invalid names: Glyptorthis biornata Reed 1945 [synonym]
Ptychopleurella lenzi Zhang 1989
Ptychopleurella multicostata Whittard and Barker 1950
Ptychopleurella pirguensis Rõõmusoks 1964
Ptychopleurella porcia Billings 1859
Ptychopleurella separata Wright 1964
Ptychopleurella sulcata Cooper 1956
+
Schizonema capillatum Temple 1970
Schizonema fissistriata Foerste 1912
Invalid names: Schizoramma Foerste 1912 [objective synonym]
Fm. †Lycophoriidae Schuchert and Cooper 1931
+
G. †Lycophoria Lahusen 1885
+
Lycophoria globosa Eichwald 1829
Lycophoria lamanskii Rubel 1961
Lycophoria longissima Pander 1830
Lycophoria nucella Dalman 1828
Fm. †Orthidae Woodward 1852
+
G. †Almadenorthis Reyes-Abril et al. 2010
+
Almadenorthis auriculata Reyes-Abril et al. 2010
G. †Bastamorthis Ghobadi Pour et al. 2011
+
Bastamorthis multicostata Ghobadi Pour et al. 2011
G. †Boreadorthis Opik 1934
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Boreadorthis crassa Opik 1934
Boreadorthis recula Opik 1934
Boreadorthis sheehani Cocks 2014
+
Diochthofera conspicua Potter 1990
G. †Duolobella Rasmussen et al. 2012
+
Duolobella sandiae Rasmussen et al. 2012
G. †Gutiorthis Reyes-Abril et al. 2010
+
Gutiorthis incurvata Reyes-Abril et al. 2010
G. †Lenorthis Andreeva 1955
G. †Leoniorthis Egerquist 2003
+
Leoniorthis robusta Hints 2014
Leoniorthis rubeli Hints 2014
G. †Orthambonites Pander 1830
+
Orthambonites aequalis Pander 1830
Orthambonites angulatus Cooper 1956
+
Invalid names: Orthambonites lata Pander 1830 [synonym], Orthambonites rotunda Pander 1830 [synonym]
Orthambonites decipiens Phleger, Jr. 1933
Orthambonites exfoliata Raymond 1905
Orthambonites exopunctata Williams 1974
Orthambonites fundata Rubel 1961
Orthambonites novitas Opik 1939
Orthambonites paucicostatus Ulrich and Cooper 1938
Orthambonites proava Salter 1865
Orthambonites tuvensis Andreeva 1982
Subfm. †Orthinae Woodward 1852
+
G. †Krattorthis Jaanusson and Bassett 1993
+
Krattorthis verneuili Rubel 1961
G. †Sivorthis Jaanusson and Bassett 1993
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Sivorthis bellus Cooper 1956
Sivorthis calatravaensis Reyes-Abril et al. 2010
Sivorthis eucharis Ulrich and Cooper 1938
Sivorthis filistera Jaanusson and Bassett 1993
Sivorthis minus Cooper 1956
Sivorthis minutus Cooper 1956
Sivorthis noctilio Sharpe 1849
Sivorthis occidentalis Cooper 1956
Sivorthis precordillerana Benedetto 2015
Sivorthis tenuicostatus Cooper 1956
G. †Turanorthis Nikitina et al. 2006
+
Turanorthis kujandensis Nikitina et al. 2006
G. †Orthis Dalman 1828
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Subg. †Orthis (Orusia) Walcott 1905
+
Orthis acuminata Billings 1859
Orthis australis M'Coy 1847
Orthis berthoisi Davidson 1869
Orthis biforata Nicholson 1875
Orthis biforata reversata Foerste 1885
Orthis biloba Linnaeus 1758
Orthis bilobata Portlock 1843
Orthis callactis Dalman 1827
Orthis christianae Kjerulf 1865
Orthis cypha James 1874
Orthis davidsoni de Verneuil 1845
Orthis expansa de Sowerby and Murchison 1839
Orthis intercostata de Sowerby and Murchison 1839
Orthis kreklingensis Opik 1939
Orthis laticostata James 1871
Orthis perveta Conrad 1843
Orthis piger Billings 1859
Orthis reversa McCoy 1862
Orthis ribeiroi Sharpe 1853
Orthis spinigera M'Coy 1847
Orthis subalata Ulrich and Cooper 1938
Orthis testudinaria Dalman 1828
Orthis tulliensis Vanuxem 1842
G. †Palaeowingella Rasmussen et al. 2012
+
Palaeowingella farewellensis Rasmussen et al. 2012
G. †Paralenorthis Havlicek and Branisa 1980
+
Paralenorthis alabamensis Ulrich and Cooper 1938
Paralenorthis alata de Sowerby and Murchison 1839
+
Invalid names: Lenorthis carausii Davidson 1868 [synonym]
Paralenorthis buttsi Schuchert and Cooper 1932
Paralenorthis carlottoi Gutiérrez−Marco and Villas 2007
Paralenorthis costata Zhan et al. 2014
Paralenorthis estenaensis Reyes-Abril et al. 2010
Paralenorthis immitatrix Havlicek and Branisa 1980
Paralenorthis lolae Reyes-Abril et al. 2010
Paralenorthis luritjaorum Jakobsen et al. 2014
Paralenorthis marshalli Wilson 1926
Paralenorthis minusculus Phleger, Jr. 1933
Paralenorthis mollesensis Levy and Nullo 1973
Paralenorthis panderania Hall and Clarke 1892
Paralenorthis proava Salter 1865
Paralenorthis rgaitensis Nikitina 1985
Paralenorthis riojanus Levy and Nullo 1973
Paralenorthis robustus Neuman 1964
Paralenorthis semnanensis Popov et al. 2009
Paralenorthis serica Chang 1934
Paralenorthis suriensis Benedetto 2003
Invalid names: Orthis calligramma chinensis Chang 1934 [synonym]
G. †Rogorthis Hints 2014
+
Rogorthis pakriensis Rubel 1961
G. †Sinorthis
+
Invalid names: Yichangorthis [synonym]
G. †Sulevorthis Jaanusson and Bassett 1993
+
Sulevorthis bielsteini Cooper 1956
Sulevorthis blountensis Cooper 1956
Sulevorthis cessatus Williams 1963
Sulevorthis exopunctatus Williams 1974
Sulevorthis lyckholmiensis Wysogorski 1900
Sulevorthis playfairi Reed 1917
G. †Suriorthis Benedetto 2003
+
Suriorthis depressus Benedetto 2003
G. †Taphrorthis Cooper 1956
+
Taphrorthis aspera Williams 1962
Taphrorthis bellatrix Reed 1917
Taphrorthis emarginata Cooper 1956
Taphrorthis guizhouensis Xu and Liu 1984
+
Invalid names: Taphrorthis obesa Xu and Liu 1984 [synonym]
Taphrorthis immatura Williams and Curry 1985
Taphrorthis peculiaris Cooper 1956
G. †Trondorthis Neuman 1974
+
Trondorthis bifurcatus Cooper 1956
Trondorthis sibirica Rozman and Severgina 1983
Trondorthis strandi Neuman and Bruton 1974
Invalid names: Ocorthis [synonym]
Fm. †Orthidiellidae Ulrich and Cooper 1936
+
G. †Eostrophomena Walcott 1905
+
Eostrophomena elegantula Walcott 1905
G. †Orthidiella Ulrich and Cooper 1936
+
Orthidiella carinata Ulrich and Cooper 1938
Orthidiella costellata Cooper 1956
Orthidiella extensa Ulrich and Cooper 1938
Orthidiella longwelli Ulrich and Cooper 1938
G. †Orthidium Hall and Clarke 1892
+
Orthidium barnesi Ross 1970
Orthidium bellulum Ulrich and Cooper 1938
Orthidium gemmiculum Billings 1865
Orthidium lamellosa Raymond 1905
Orthidium lamellosum Raymond 1905
Orthidium prominens Benedetto et al. 2003
G. †Portranella Wright 1964
+
Portranella exornata Sharpe 1853
+
Trematorthis karasaiensis Nikitina et al. 2006
Trematorthis tenuis Cooper 1956
G. †Tuvinia Andreeva 1982
+
Tuvinia alakulica Nikitina et al. 2006
Tuvinia fasciculata Nikitina et al. 2006
Tuvinia radiata Andreeva 1982
Fm. †Plaesiomyidae Schuchert 1913
+
G. †Bokotorthis Popov et al. 2000
+
Bokotorthis abayi Klenina 1984
+
Invalid names: Bokotorthis distincta Klenina 1984 [synonym], Bokotorthis nikitini Klenina 1984 [synonym], Bokotorthis tschingisensis Klenina 1984 [synonym]
Bokotorthis kasachstanica Popov et al. 2000
Bokotorthis kasakhstanica Rukavishnikova 1956
Bokotorthis minuta Popov and Cocks 2014
Subfm. †Evenkininae Williams 1965
+
G. †Evenkina
Subfm. †Metorthinae Williams 1965
+
G. †Metorthis
Subfm. †Plaesiomyinae Schuchert 1913
+
G. †Austinella Foerste 1909
+
Austinella kankakensis McChesney 1861
Austinella multicostella Alberstadt 1973
Austinella sarybulakensis Popov et al. 2002
G. †Campylorthis Ulrich and Copper 1942
+
Campylorthis deflecta Conrad 1843
Campylorthis discreta Reed 1952
G. †Chaulistomella Cooper 1956
+
Chaulistomella crassa Cooper 1956
G. †Dinorthis Hall and Clarke 1892
+
Subg. †Dinorthis (Pionorthis) Schuchert and Cooper 1932
Subg. †Dinorthis (Retrorsirostra) Schuchert and Cooper 1932
Dinorthis anticostiensis Shaler 1865
+
Invalid names: Orthis porcata Shaler 1865 [replaced]
Dinorthis atavoides Willard 1928
Dinorthis berwynensis Whittington 1938
Dinorthis carleyi Hall 1860
Dinorthis flabellulum Sowerby and Murchison 1839
Dinorthis hadra Percival 1991
Dinorthis holdeni Willard 1928
Dinorthis holdenoides Laurie 1991
Dinorthis interstriata Willard 1928
Dinorthis meedsi Winchell and Schuchert 1892
Dinorthis meedsi arctica Schuchert 1900
Dinorthis occidentalis Okulitch 1943
Dinorthis pectinella Emmons 1842
Dinorthis sweeneyi Winchell 1881
Dinorthis taukensis Nikitin et al. 2003
Dinorthis transversa Willard 1928
+
Invalid names: Dinorthis quadriplicata Willard 1928 [synonym]
Dinorthis venusta Cooper 1956
Orthis (Dinorthis) meedsi Winchell and Schuchert 1893
G. †Madiorthis Zuykov and Harper 2008
+
Madiorthis alsami Zuykov and Harper 2008
+
Multicostella platys Billings 1859
Multicostella plena Cooper 1956
G. †Plaesiomys Hall and Clarke 1892
+
Subg. †Plaesiomys (Plaesiomys) Hall and Clarke 1892
Subg. †Plaesiomys (Valcourea) Raymond 1911
+
Plaesiomys carletona Twenhofel 1928
Plaesiomys fidelis Popov et al. 2000
Plaesiomys idahoensis Ross 1959
Plaesiomys iphigenia Billings 1865
Plaesiomys multiplicata Bancroft 1945
Plaesiomys porcata M'Coy 1846
Plaesiomys porcata lata Mitchell 1977
Plaesiomys proavita Winchell and Schuchert 1892
+
Invalid names: Plaesiomys planus Wang 1949 [synonym]
Plaesiomys rockymontana Wilson 1926
Plaesiomys saxbiana Oraspold 1959
Invalid names: Pionorthis Schuchert and Cooper 1932 [replaced]
G. †Retrorsirostra Schuchert and Cooper 1932
+
G. †Valcourea Raymond 1911
+
Valcourea angulata Phleger, Jr. 1933
Valcourea confinis Salter 1849
Valcourea plana Cooper 1956
Valcourea semicarinata Cooper 1956
Valcourea strophomenoides Raymond 1905
Valcourea transversa Cooper 1956
Fm. †Poramborthidae Havlicek 1950
+
Fm. †Productorthidae Schuchert and Cooper 1931
+
Subfm. †Glossorthinae Williams et al. 2000
+
G. †Glossorthis Öpik 1930
+
Glossorthis schmidti Wysogonski 1900
Glossorthis tacens Opik 1930
G. †Prantlina Havlíček 1949
+
Prantlina desiderata Barrande 1948
Prantlina nasuta Rubel 1961
Subfm. †Productorthinae Schuchert and Cooper 1931
+
G. †Ferrax
G. †Nicolella Reed 1917
+
Nicolella actoniae de Sowerby and Murchison 1839
Nicolella alliku Oraspold 1956
Nicolella crabbi Cocks 2014
Nicolella oswaldi Buch 1849
+
Nicolella oswaldi mediofida Alichova 1951
Nicolella patens Oraspold 1956
Nicolella pterygoidea Pander 1830
Nicolella sylvatica Reed 1936
G. †Panderina Schuchert and Cooper 1931
+
Panderina abscissa Pander 1830
Panderina ambigua Benedetto 2003
Panderina bocki Lamansky 1905
Panderina lata Pander 1830
Panderina pakriensis Rubel 1961
Panderina tetragona Pander 1830
G. †Productorthis Kozlowski 1927
+
Productorthis aculeata Pander 1830
Productorthis angulensis Benedetto 2003
Productorthis eminens Pander 1830
Productorthis mainensis Neuman 1964
Productorthis obtusus Pander 1830
Productorthis parallela Pander 1830
+
Saucrorthis obtusa Ghobadi Pour et al. 2011
Fm. †Whittardiidae Williams 1974
+
Invalid names: Bajanorthis [nomen dubium], Malinella Andreeva 1982 [nomen dubium], Nugnecella [nomen dubium], Orthacea Woodward and Schuchert 1852 [replaced], Ottadalenites [nomen dubium], Skenidioidae Kozlowski 1929 [empty], Tarfayidae Popov et al. 2009 [empty], Turarella [nomen dubium], Zhejiangorthis [nomen dubium]
Diagnosis
No diagnoses are available