Opinions from B. Kröger 2008
- 'Actinocerida belongs to Cephalopoda'
- 'Adiagoceras belongs to Arionoceratidae'
- 'Adiagoceras taouzense belongs to Adiagoceras'
- 'Akrosphaeorthoceras belongs to Sphaerorthoceratidae'
- 'Akrosphaeorthoceras gregalis belongs to Akrosphaeorthoceras' according to Ristedt 1968
- 'Akrosphaeorthoceras gregalis belongs to Akrosphaeorthoceras'
- 'Akrosphaerorthoceras belongs to Sphaerorthoceratidae'
- 'Akrosphaerorthoceras gregalis belongs to Akrosphaerorthoceras' according to Ristedt 1968
- 'Akrosphaerorthoceras gregalis belongs to Akrosphaerorthoceras' according to Ristedt 1968
- 'Anaspyroceras belongs to Dawsonoceratidae'
- 'Angeisonoceras belongs to Geisonoceratidae'
- 'Angeisonoceras reteornatum belongs to Angeisonoceras'
- 'Ankyloceras belongs to Karoceratidae'
- 'Arionoceras belongs to Arionoceratidae'
- 'Arionoceratidae belongs to Orthocerida'
- 'Arthrophyllum belongs to Lamellorthoceratidae'
- 'Bactrites belongs to Bactritidae'
- 'Bactrites ellipticus belongs to Bactrites' according to Frech 1897
- 'Bactrites ellipticus is recombined as Lobobactrites ellipticus'
- 'Bactrites subconicus belongs to Bactrites' according to Sandberger 1843
- 'Bactrites subconicus belongs to Bactrites'
- 'Bactritida belongs to Cephalopoda'
- 'Bactritidae belongs to Bactritida'
- 'Bogoslovskya mira belongs to Bogoslovskya' according to Zhuravleva 1978
- 'Bogoslovskya mira is recombined as Infundibuloceras mira'
- 'Bohemojovellania belongs to Jovellaniidae'
- 'Bohemojovellania adrae belongs to Bohemojovellania'
- 'Bohemojovellania bouskai belongs to Bohemojovellania' according to Manda 2001
- 'Bohemojovellania obliquum belongs to Bohemojovellania'
- 'Brevicoceras belongs to Brevicoceratidae'
- 'Brevicoceras casteri belongs to Brevicoceras' according to Flower 1938
- 'Brevicoceras magnum belongs to Brevicoceras'
- 'Brevicoceratidae belongs to Oncocerida'
- 'Cancellspyroceras belongs to Spyroceratidae'
- 'Centroceras belongs to Centroceratidae'
- 'Centroceratidae belongs to Nautilida'
- 'Cerovoceras belongs to Brevicoceratidae'
- 'Cerovoceras brevidomus belongs to Cerovoceras'
- 'Cerovoceras fatimi belongs to Cerovoceras'
- 'Chebbioceras belongs to Orthoceratidae'
- 'Cyrtoceras nesnayamiense belongs to Cyrtoceras' according to Foerste 1925
- 'Cyrtoceras nesnayamiense is recombined as Ankyloceras nesnayamiense' according to Zhuravleva 1974
- 'Dawsonoceratidae belongs to Orthocerida'
- 'Deiroceras belongs to Ormoceratidae'
- 'Deiroceras hollardi belongs to Deiroceras'
- 'Devonobactrites belongs to Bactritidae'
- 'Devonobactrites emsiense belongs to Devonobactrites'
- 'Diagoceras belongs to Spyroceratidae'
- 'Discosorida belongs to Cephalopoda'
- 'Geidoloceras belongs to Pseudorthoceratidae'
- 'Geidoloceras ouaoufilalense belongs to Geidoloceras'
- 'Geisonoceratidae belongs to Orthocerida'
- 'Goniatites marcellensis is recombined as Centroceras marcellensis' according to Vanuxem 1842
- 'Hemicosmorthoceras belongs to Sphaerorthoceratidae'
- 'Hemicosmorthoceras aichae belongs to Hemicosmorthoceras'
- 'Hemicosmorthoceras laterculum belongs to Hemicosmorthoceras' according to Ristedt 1968
- 'Hemicosmorthoceras laterculum belongs to Hemicosmorthoceras'
- 'Hemicosmorthoceras semimbricatum belongs to Hemicosmorthoceras' according to Gnoli 1982
- 'Hemicosmorthoceras semimbricatum belongs to Hemicosmorthoceras'
- 'Infundibuloceras belongs to Orthoceratidae'
- 'Infundibuloceras brevimira belongs to Infundibuloceras' according to Klug et al. 2008
- 'Infundibuloceras brevimira belongs to Infundibuloceras'
- 'Infundibuloceras longicameratum belongs to Infundibuloceras'
- 'Infundibuloceras mohamadi belongs to Infundibuloceras'
- 'Jovellania belongs to Jovellaniidae'
- 'Jovellania cheirae belongs to Jovellania'
- 'Jovellaniidae belongs to Oncocerida'
- 'Karoceratidae belongs to Oncocerida'
- 'Kionoceras belongs to Kionoceratidae'
- 'Kionoceratidae belongs to Orthocerida'
- 'Kopaninoceras belongs to Orthoceratidae'
- 'Kopaninoceras dorsatoides belongs to Kopaninoceras'
- 'Lamellorthoceras vermiculare belongs to Lamellorthoceras' according to Termier and Termier 1950
- 'Lamellorthoceras vermiculare is recombined as Arthrophyllum vermiculare'
- 'Lamellorthoceratidae belongs to Lituitida'
- 'Lituitida belongs to Cephalopoda'
- 'Lobobactrites belongs to Bactritidae'
- 'Merocycloceras belongs to Orthoceratidae'
- 'Merocycloceras declivis belongs to Merocycloceras' according to Ristedt 1968
- 'Merocycloceras declivis belongs to Merocycloceras'
- 'Metarizoceras sinkovense is recombined as Orthorizoceras sinkovense' according to Balashov 1968
- 'Metarmenoceras belongs to Ormoceratidae'
- 'Metarmenoceras fatimae belongs to Metarmenoceras'
- 'Michelinoceras belongs to Orthoceratidae'
- 'Michelinoceras abditum belongs to Michelinoceras' according to Balashov and Kiselev 1968
- 'Michelinoceras abditum is recombined as Tibichoanoceras abditum'
- 'Mutoblakeoceras belongs to Nothoceratidae'
- 'Mutoblakeoceras inconstans belongs to Mutoblakeoceras'
- 'Nautilida belongs to Cephalopoda'
- 'Neocycloceras belongs to Pseudorthoceratidae'
- 'Neocycloceras obliquum belongs to Neocycloceras' according to Flower and Caster 1935
- 'Neocycloceras termierorum belongs to Neocycloceras'
- 'Nothoceratidae belongs to Oncocerida'
- 'Oncoceratida is corrected as Oncocerida and belongs to Cephalopoda'
- 'Oncoceratidae belongs to Oncocerida'
- 'Ormoceras dobrovljanense belongs to Ormoceras' according to Kiselev 1968
- 'Ormoceras dobrovljanense is recombined as Subormoceras dobrovljanense'
- 'Ormoceras rashkovense belongs to Ormoceras' according to Kiselev 1968
- 'Ormoceras rashkovense is recombined as Subormoceras rashkovense'
- 'Ormoceras skalaense is recombined as Subormoceras skalaense'
- 'Ormoceratidae belongs to Actinocerida'
- 'Orthoceras affine belongs to Orthoceras' according to Meneghini 1857
- 'Arionoceras affine is a subjective synonym of Orthoceras canonicum'
- 'Orthoceras aptum belongs to Orthoceras' according to Hall 1876
- 'Orthoceras aptum is recombined as Diagoceras aptum' according to Flower 1936
- 'Orthoceras arion belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras arion is a subjective synonym of Orthoceras canonicum'
- 'Orthoceras bayfieldi belongs to Orthoceras' according to Stokes 1838
- 'Orthoceras bayfieldi is recombined as Ormoceras bayfieldi' according to Stokes 1840
- 'Orthoceras bifrons belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras bifrons is recombined as Plagiostomoceras bifrons'
- 'Orthoceras bohemicum belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras bohemicum is a subjective synonym of Orthoceras fluminense'
- 'Orthoceras buchi is recombined as Jovellania buchi' according to Verneul 1850
- 'Orthoceras canonicum belongs to Orthoceras' according to Meneghini 1843
- 'Orthoceras canonicum is recombined as Arionoceras canonicum'
- 'Orthoceras capillosum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras capillosum is recombined as Arionoceras capillosum'
- 'Orthoceras consocium belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras consocium is recombined as Angeisonoceras consocium'
- 'Orthoceras crassus belongs to Orthoceras' according to Roemer 1844
- 'Orthoceras crassus is recombined as Arthrophyllum crassus'
- 'Orthoceras crotalum is recombined as Spyroceras crotalum'
- 'Orthoceras crotalum belongs to Orthoceras' according to Hall 1879
- 'Orthoceras culter belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras culter is recombined as Plagiostomoceras culter' according to Gnoli and Serpagli 1991
- 'Orthoceras currens belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras currens is recombined as Michelinoceras currens'
- 'Orthoceras dahlii belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras dahlii is a subjective synonym of Orthoceras ludense'
- 'Orthoceras davidsoni belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras davidsoni is recombined as Angeisonoceras davidsoni'
- 'Orthoceras doricum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras doricum is recombined as Kionoceras doricum'
- 'Orthoceras festians belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras festians is recombined as Angeisonoceras festians'
- 'Orthoceras fluminense belongs to Orthoceras' according to Meneghini 1857
- 'Orthoceras fluminense is recombined as Orthocycloceras fluminense'
- 'Orthoceras gruenwaldti belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras gruenwaldti is recombined as Plagiostomoceras gruenwaldti'
- 'Orthoceras imminutum belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras imminutum is recombined as Angeisonoceras imminutum'
- 'Orthoceras inchoatum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras inchoatum is recombined as Angeisonoceras inchoatum'
- 'Orthoceras jucundum is recombined as Kopaninoceras jucundum' according to Barrande 1870
- 'Orthoceras libens belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras libens is recombined as Angeisonoceras libens'
- 'Orthoceras limatum belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras limatum is recombined as Angeisonoceras limatum'
- 'Orthoceras loricatum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras loricatum is recombined as Cancellspyroceras loricatum'
- 'Orthoceras ludense belongs to Orthoceras' according to Sowerby 1839
- 'Orthoceras ludense is recombined as Temperoceras ludense'
- 'Orthoceras michelini belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras michelini is recombined as Michelinoceras michelini'
- 'Orthoceras migrans belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras migrans is recombined as Temperoceras migrans'
- 'Orthoceras nudum is recombined as Temperoceras nudum'
- 'Orthoceras nudum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras omnium belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras omnium is a subjective synonym of Orthoceras ludense'
- 'Orthoceras originale belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras originale is recombined as Parakionoceras originale'
- 'Orthoceras patronus belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras patronus is recombined as Spyroceras patronus'
- 'Orthoceras placidum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras placidum is recombined as Plagiostomoceras placidum'
- 'Orthoceras pleurotomum belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras pleurotomum is recombined as Plagiostomoceras pleurotomum' according to Teichert and Glenister 1952
- 'Orthoceras pulchrum belongs to Orthoceras' according to Barrande 1866
- 'Orthoceras pulchrum is recombined as Suloceras pulchrum' according to Manda 2001
- 'Orthoceras python belongs to Orthoceras' according to Billings 1857
- 'Orthoceras squamatulum belongs to Orthoceras' according to Barrande 1868
- 'Orthoceras squamatulum is recombined as Angeisonoceras squamatulum'
- 'Orthoceras submoniliforme is recombined as Arionoceras submoniliforme'
- 'Orthoceras submoniliforme belongs to Orthoceras' according to Meneghini 1857
- 'Orthoceras subnotatum is recombined as Adiagoceras subnotatum'
- 'Orthoceras temperans belongs to Orthoceras' according to Barrande 1867
- 'Orthoceras temperans is a subjective synonym of Orthoceras ludense'
- 'Orthoceras thyrsus belongs to Orthoceras' according to Barrande 1870
- 'Orthoceras thyrsus is recombined as Kopaninoceras thyrsus'
- 'Orthoceras truncatum is recombined as Sphooceras truncatum'
- 'Orthoceratidae belongs to Orthocerida'
- 'Orthoceratites gracile belongs to Orthoceratites' according to Blumenbach 1803
- 'Orthoceratites gracile is recombined as Bactrites gracile'
- 'Orthoceratites obliquiseptatum belongs to Orthoceratites' according to Sandberger and Sandberger 1852
- 'Orthoceratites obliquiseptatum is recombined as Devonobactrites obliquiseptatum' according to Shimansky 1962
- 'Orthocerida belongs to Cephalopoda'
- 'Orthocycloceras belongs to Orthoceratidae'
- 'Orthocycloceras tafilaltense belongs to Orthocycloceras'
- 'Orthorizoceras belongs to Oncoceratidae'
- 'Orthorizoceras desertum belongs to Orthorizoceras'
- 'Parakionoceras belongs to Arionoceratidae'
- 'Parasphaerorthoceras belongs to Sphaerorthoceratidae'
- 'Parasphaerorthoceras accuratum belongs to Parasphaerorthoceras' according to Ristedt 1968
- 'Parasphaerorthoceras accuratum belongs to Parasphaerorthoceras' according to Ristedt 1968
- 'Phragmoceratidae belongs to Discosorida'
- 'Plagiostomoceras belongs to Sphaerorthoceratidae'
- 'Plagiostomoceras angustum belongs to Plagiostomoceras' according to Holzapfel 1885
- 'Plagiostomoceras lategruenwaldti belongs to Plagiostomoceras'
- 'Plagiostomoceras reticulatum belongs to Plagiostomoceras'
- 'Probatoceras belongs to Pseudorthoceratidae'
- 'Probatoceras crassum belongs to Probatoceras' according to Zhuravleva 1978
- 'Pseudendoplectoceras belongs to Phragmoceratidae'
- 'Pseudendoplectoceras lahcani belongs to Pseudendoplectoceras'
- 'Pseudorthoceratidae belongs to Pseudorthocerida'
- 'Pseudorthocerida belongs to Cephalopoda'
- 'Pseudospyroceras belongs to Orthoceratidae'
- 'Pseudospyroceras reticulum belongs to Pseudospyroceras'
- 'Sichuanoceras belongs to Sichuanoceratidae'
- 'Sichuanoceras quizhouense belongs to Sichuanoceras' according to Chang 1962
- 'Sichuanoceras quizhouense belongs to Sichuanoceras' according to Tsou 1966
- 'Sichuanoceras zizense belongs to Sichuanoceras'
- 'Sichuanoceratidae belongs to Orthocerida'
- 'Sinoceras komiense belongs to Sinoceras' according to Zhuravleva 1978
- 'Sinoceras komiense is recombined as Infundibuloceras komiense'
- 'Sinoceras riphaeum belongs to Sinoceras' according to Zhuravleva 1978
- 'Sinoceras riphaeum is recombined as Tibichoanoceras riphaeum'
- 'Sphaerorthoceras belongs to Sphaerorthoceratidae'
- 'Sphaerorthoceras beatum belongs to Sphaerorthoceras' according to Ristedt 1968
- 'Sphaerorthoceras beatum belongs to Sphaerorthoceras' according to Ristedt 1968
- 'Sphaerorthoceratidae belongs to Orthocerida'
- 'Sphaerortoceratidae belongs to Orthocerida'
- 'Sphooceras belongs to Sphooceratidae'
- 'Sphooceratidae belongs to Lituitida'
- 'Spyroceras belongs to Spyroceratidae'
- 'Spyroceras cyrtopatronus belongs to Spyroceras'
- 'Spyroceras fukuijense belongs to Spyroceras' according to Niko 1996
- 'Spyroceras fukuijense belongs to Spyroceras'
- 'Spyroceras latepatronus belongs to Spyroceras'
- 'Spyroceratidae belongs to Pseudorthocerida'
- 'Subdoloceras belongs to Pseudorthoceratidae'
- 'Subdoloceras atrouzense belongs to Subdoloceras'
- 'Subdoloceras engeseri belongs to Subdoloceras'
- 'Subdoloceras tafilaltense belongs to Subdoloceras'
- 'Subormoceras belongs to Pseudorthoceratidae'
- 'Subormoceras erfoudense belongs to Subormoceras'
- 'Subormoceras rissaniense belongs to Subormoceras'
- 'Suloceras belongs to Spyroceratidae'
- 'Suloceras longipulchrum belongs to Suloceras'
- 'Tafilaltoceras belongs to Nothoceratidae'
- 'Tafilaltoceras adgoi belongs to Tafilaltoceras'
- 'Temperoceras belongs to Geisonoceratidae'
- 'Temperoceras aequinudum belongs to Temperoceras'
- 'Theoceras belongs to Orthoceratidae'
- 'Theoceras filondouzense belongs to Theoceras'
- 'Tibichoanoceras belongs to Orthoceratidae'
- 'Tibichoanoceras tibichoanum belongs to Tibichoanoceras'
- 'Ventrobalashovia belongs to Karoceratidae'
- 'Ventrobalashovia zhuravlevae belongs to Ventrobalashovia'