PBDB

Opinions from R. E. Crick 1981

'Acaroceras belongs to Acaroceratidae'
'Acaroceratidae belongs to Ellesmerocerida'
'Actinoceras belongs to Actinoceratidae'
'Actinoceras (Paractinoceras) was reranked as Paractinoceras and belongs to Actinoceratidae'
'Actinoceratidae belongs to Actinocerida'
'Actinoceratoidea [misspelled as Actinoceridea] belongs to Cephalopoda'
'Actinocerida belongs to Actinoceridea'
'Actinomorpha belongs to Valcouroceratidae'
'Adamsoceras belongs to Wutinoceratidae'
'Aetheloxoceras belongs to Yanheceratidae'
'Aethiosolen belongs to Orthoceratidae'
'Aethoceras belongs to Estonioceratidae'
'Alaskoceras belongs to Estonioceratidae'
'Albertoceras belongs to Ellesmeroceratidae'
'Allocotoceras belongs to Endoceratidae'
'Allopiloceras belongs to Piloceratidae'
'Allotrioceras belongs to Allotrioceratidae'
'Allotrioceratidae belongs to Endocerida'
'Allumettoceras belongs to Tripteroceratidae'
'Amsleroceras belongs to Baltoceratidae'
'Anaspyroceras belongs to Orthoceratidae'
'Angelinoceras belongs to Lituitidae'
'Anguloceras belongs to Bassleroceratidae'
'Anhuiceras belongs to Ellesmeroceratidae'
'Annoceras belongs to Ellesmeroceratidae'
'Anthoceras belongs to Proterocameratidae'
'Antiphragmoceras belongs to Westonoceratidae'
'Antiplectoceras belongs to Barrandeoceratidae'
'Aphetoceras belongs to Estonioceratidae'
'Apocrinoceras belongs to Protocycloceratidae'
'Apsidoceras belongs to Apsidoceratidae'
'Apsidoceratidae belongs to Barrandeocerida'
'Archendoceras belongs to Yanheceratidae'
'Arkoceras belongs to Trocholitidae'
'Armenoceras belongs to Armenoceratidae'
'Armenoceratidae belongs to Actinocerida'
'Ascoceras belongs to Ascoceratidae'
'Ascoceratidae belongs to Ascocerida'
'Ascocerida belongs to Nautiloidea'
'Augustoceras belongs to Valcouroceratidae'
'Avaoceras belongs to Bassleroceratidae'
'Avilionella belongs to Barrandeoceratidae'
'Bactroceras belongs to Baltoceratidae'
'Bajkaloceras belongs to Bajkaloceratidae'
'Bajkaloceratidae belongs to Intejocerida'
'Bakeroceras belongs to Protocycloceratidae'
'Balkoceras belongs to Balkoceratidae'
'Balkoceratidae belongs to Ellesmerocerida'
'Balticoceras [misspelled as Baltioceras] belongs to Orthoceratidae'
'Baltoceras belongs to Baltoceratidae'
'Baltoceratidae belongs to Ellesmerocerida'
'Barnesoceras belongs to Ellesmeroceratidae'
'Barrandeoceras belongs to Barrandeoceratidae'
'Barrandeoceratidae belongs to Barrandeocerida'
'Barrandeocerida belongs to Nautiloidea'
'Bassleroceras belongs to Bassleroceratidae'
'Bassleroceratidae belongs to Ellesmerocerida'
'Bathmoceras belongs to Bathmoceratidae'
'Bathmoceratidae belongs to Ellesmerocerida'
'Baykonuroceras [misspelled as Baykonaroceras] belongs to Proteoceratidae'
'Beekmanoceras belongs to Trocholitidae'
'Belloceras belongs to Baltoceratidae'
'Beloitoceras belongs to Oncoceratidae'
'Bentoceras belongs to Tarphyceratidae'
'Bickmorites belongs to Barrandeoceratidae'
'Bifoveoceras belongs to Orthoceratidae'
'Billingsites belongs to Ascoceratidae'
'Bisonoceras belongs to Piloceratidae'
'Botryceras belongs to Botryceratidae'
'Botryceratidae belongs to Endocerida'
'Bridgeoceras belongs to Ellesmeroceratidae'
'Broeggeroceras belongs to Westonoceratidae'
'Buehleroceras belongs to Ellesmeroceratidae'
'Burenoceras belongs to Ellesmeroceratidae'
'Buttsoceras belongs to Troedssonellidae'
'Cacheoceras belongs to Allotrioceratidae'
'Calhounoceras belongs to Actinocerida'
'Cameroceras belongs to Endoceratidae'
'Campbelloceras belongs to Tarphyceratidae'
'Campendoceras belongs to Proterocameratidae'
'Cartersoceras belongs to Baltoceratidae'
'Caseoceras belongs to Ellesmeroceratidae'
'Cassinoceras belongs to Piloceratidae'
'Catoraphinoceras belongs to Protocycloceratidae'
'Centrocyrtoceras belongs to Barrandeoceratidae'
'Centroonoceras belongs to Troedssonellidae'
'Centrotarphyceras belongs to Tarphyceratidae'
'Changkiuoceras belongs to Endoceratidae'
'Charactoceras belongs to Apsidoceratidae'
'Charactocerina belongs to Apsidoceratidae'
'Chazyoceras belongs to Endoceratidae'
'Chepuloceras belongs to Ellesmeroceratidae'
'Chidleyenoceras belongs to Apsidoceratidae'
'Chihlioceras belongs to Chihlioceratidae'
'Chihlioceratidae belongs to Endocerida'
'Chisiloceras belongs to Endoceratidae'
'Clarkesvillia belongs to Westonoceratidae'
'Clarkoceras belongs to Ellesmeroceratidae'
'Clelandoceras belongs to Ellesmeroceratidae'
'Clinoceras belongs to Clinoceratidae'
'Clinoceratidae belongs to Orthocerida'
'Clitendoceras belongs to Proterocameratidae'
'Clytoceras belongs to Estonioceratidae'
'Cochlioceras belongs to Baltoceratidae'
'Conocerina belongs to Ellesmeroceratidae'
'Copiceras belongs to Ellesmeroceratidae'
'Coreanoceras belongs to Manchuroceratidae'
'Cotteroceras belongs to Proterocameratidae'
'Ctenoceras belongs to Orthoceratidae'
'Cumberloceras belongs to Ellesmeroceratidae'
'Curtoceras belongs to Trocholitidae'
'Cyclocyrtendoceras belongs to Cyrtendoceratidae'
'Cyclolituites belongs to Lituitidae'
'Cycloplectoceras belongs to Tarphyceratidae'
'Cyclostomiceras belongs to Ellesmeroceratidae'
'Cyptendoceras belongs to Proterocameratidae'
'Cyrtactinoceras belongs to Proteoceratidae'
'Cyrtendoceras belongs to Cyrtendoceratidae'
'Cyrtendoceratidae belongs to Endocerida'
'Cyrtobaltoceras belongs to Baltoceratidae'
'Cyrtocerina belongs to Cyrtocerinidae'
'Cyrtocerinidae belongs to Ellesmerocerida'
'Cyrtogomphoceras belongs to Cyrtogomphoceratidae'
'Cyrtogomphoceratidae belongs to Discosorida'
'Cyrtonybyoceras belongs to Wutinoceratidae'
'Cyrtovaginoceras belongs to Cyrtendoceratidae'
'Dakeoceras belongs to Ellesmeroceratidae'
'Danoceras belongs to Diestoceratidae'
'Dartonoceras belongs to Piloceratidae'
'Deckeroceras belongs to Apsidoceratidae'
'Deiroceras belongs to Ormoceratidae'
'Deltoceras belongs to Tarphycerida'
'Desioceras belongs to Ellesmeroceratidae'
'Diaphoroceras belongs to Bassleroceratidae'
'Diastoloceras belongs to Protocycloceratidae'
'Dideroceras belongs to Endoceratidae'
'Diestoceras belongs to Diestoceratidae'
'Diestoceratidae belongs to Oncocerida'
'Digenuoceras belongs to Oncoceratidae'
'Discoactinoceras belongs to Huroniidae'
'Discoceras belongs to Trocholitidae'
'Discosorida belongs to Nautiloidea'
'Disphenoceras belongs to Piloceratidae'
'Donacoceras belongs to Narthecoceratidae'
'Dongshanoceras belongs to Ellesmeroceratidae'
'Dowlingoceras belongs to Diestoceratidae'
'Dunleithoceras belongs to Oncoceratidae'
'Dwightoceras belongs to Bassleroceratidae'
'Dyscritoceras belongs to Bassleroceratidae'
'Eburoceras belongs to Ellesmeroceratidae'
'Ecdyceras belongs to Hebetoceratidae'
'Ectenoceras belongs to Ellesmeroceratidae'
'Ectenolites belongs to Ellesmeroceratidae'
'Ectocycloceras belongs to Protocycloceratidae'
'Ehlersoceras belongs to Oncoceratidae'
'Eichwaldoceras belongs to Estonioceratidae'
'Elkanoceras belongs to Ruedemannoceratidae'
'Ellesmeroceras [misspelled as Ellemeroceras] belongs to Ellesmeroceratidae'
'Ellesmeroceratida is corrected as Ellesmerocerida and belongs to Nautiloidea'
'Ellesmeroceratidae belongs to Ellesmerocerida'
'Ellinoceras belongs to Actinoceratidae'
'Emmonsoceras belongs to Emmonsoceratidae'
'Emmonsoceratidae belongs to Endocerida'
'Endoceras belongs to Endoceratidae'
'Endoceratidae belongs to Endocerida'
'Endocerida belongs to Endoceratoidea'
'Endocycloceras belongs to Protocycloceratidae'
'Endorioceras belongs to Baltoceratidae'
'Eoclarkoceras belongs to Ellesmeroceratidae'
'Eodiaphragmoceras belongs to Plectronoceratidae'
'Eoectenolites belongs to Ellesmeroceratidae'
'Eorizoceras belongs to Graciloceratidae'
'Eothinoceras belongs to Bathmoceratidae'
'Eotripteroceras belongs to Orthoceratidae'
'Ephippiorthoceras belongs to Proteoceratidae'
'Eremoceras belongs to Ellesmeroceratidae'
'Escharendoceras belongs to Proterocameratidae'
'Eskimoceras belongs to Ormoceratidae'
'Estonioceras belongs to Estonioceratidae'
'Estonioceratidae belongs to Tarphycerida'
'Eurystomites belongs to Tarphyceratidae'
'Evencoceras belongs to Intejoceratidae'
'Faberoceras belongs to Westonoceratidae'
'Farroceras belongs to Narthecoceratidae'
'Fayettoceras belongs to Valcouroceratidae'
'Floweroceras belongs to Actinoceratidae'
'Foerstellites belongs to Endoceratidae'
'Franklinoceras belongs to Ruedemannoceratidae'
'Fremontoceras belongs to Apsidoceratidae'
'Garryoceras belongs to Orthocerida'
'Geisonoceras belongs to Geisonoceratidae'
'Geisonoceratidae belongs to Orthocerida'
'Geisonocerina belongs to Geisonoceratidae'
'Georgina belongs to Georginidae'
'Georginidae belongs to Actinocerida'
'Glenisteroceras belongs to Troedssonellidae'
'Gonioceras belongs to Gonioceratidae'
'Gonioceratidae belongs to Actinocerida'
'Gorbyoceras belongs to Proteoceratidae'
'Graciloceras belongs to Graciloceratidae'
'Graciloceratidae belongs to Oncocerida'
'Greenlandoceras belongs to Greenlandoceratidae'
'Greenlandoceratidae belongs to Discosorida'
'Hadoceras belongs to Tripteroceratidae'
'Hardmanoceras belongs to Trocholitidae'
'Hebetoceras belongs to Hebetoceratidae'
'Hebetoceratidae belongs to Ascocerida'
'Hecatoceras belongs to Westonoceratidae'
'Hedstroemoceras belongs to Geisonoceratidae'
'Hemichoanella belongs to Ellesmeroceratidae'
'Hemipiloceras belongs to Endoceratidae'
'Huaiheceras belongs to Huaihecaratidae'
'Huaiheceratidae [misspelled as Huaihecaratidae] belongs to Ellesmerocerida'
'Huronia belongs to Huroniidae'
'Huroniella belongs to Huroniidae'
'Huroniidae belongs to Actinocerida'
'Ignoceras belongs to Endoceratidae'
'Intejoceras belongs to Intejoceratidae'
'Intejoceratidae belongs to Intejocerida'
'Intejocerida belongs to Endoceratoidea'
'Irianoceras belongs to Plectronoceratidae'
'Isorthoceras belongs to Proteoceratidae'
'Jasperoceras belongs to Trocholitidae'
'Jiagouceras belongs to Plectronoceratidae'
'Jovellania belongs to Jovellaniidae'
'Jovellaniidae belongs to Oncocerida'
'Juaboceras belongs to Manchuroceratidae'
'Kailuanoceras belongs to Endoceratidae'
'Kaipingoceras belongs to Endoceratidae'
'Kawasakiceras belongs to Endoceratidae'
'Kentlandoceras belongs to Oncoceratidae'
'Keraiaceras belongs to Ellesmeroceratidae'
'Kiaeroceras belongs to Cyrtogomphoceratidae'
'Kinaschukoceras belongs to Apsidoceratidae'
'Kindleoceras belongs to Valcouroceratidae'
'Kionoceras belongs to Orthoceratidae'
'Kiotoceras belongs to Endoceratidae'
'Kirkoceras belongs to Proterocameratidae'
'Kochoceras belongs to Actinoceratidae'
'Kotoceras belongs to Endoceratidae'
'Kugeloceras belongs to Proterocameratidae'
'Kutorgoceras belongs to Endoceratidae'
'Kyminoceras belongs to Protocycloceratidae'
'Lambeoceras belongs to Gonioceratidae'
'Lamottoceras belongs to Endoceratidae'
'Landeroceras belongs to Cyrtogomphoceratidae'
'Lavaloceras belongs to Westonoceratidae'
'Lawrenceoceras belongs to Bassleroceratidae'
'Lebetoceras belongs to Ellesmeroceratidae'
'Lechritrochoceratidae belongs to Barrandeocerida'
'Leurocycloceras belongs to Orthoceratidae'
'Leurorthoceras belongs to Actinoceratidae'
'Leurotrochoceras belongs to Lechritrochoceratidae'
'Levisoceras belongs to Ellesmeroceratidae'
'Linchengoceras belongs to Endoceratidae'
'Liskeardia belongs to Endoceratidae'
'Litoceras belongs to Trocholitidae'
'Lituites belongs to Lituitidae'
'Lituitidae belongs to Tarphycerida'
'Llanoceras belongs to Ellesmeroceratidae'
'Lobendoceras belongs to Proterocameratidae'
'Lobocyclendoceras belongs to Endoceratidae'
'Lobosiphon belongs to Proterocameratidae'
'Loganoceras belongs to Oncoceratidae'
'Lowoceras belongs to Lowoceratidae'
'Lowoceratidae belongs to Discosorida'
'Loxochoanella belongs to Ellesmeroceratidae'
'Lunanoceras belongs to Plectronoceratidae'
'Lyckholmoceras belongs to Diestoceratidae'
'Madiganella belongs to Ruedemannoceratidae'
'Maelonoceras belongs to Oncoceratidae'
'Majoceras belongs to Majoceratidae'
'Majoceratidae belongs to Intejocerida'
'Manchuroceras belongs to Manchuroceratidae'
'Manchuroceratidae belongs to Endocerida'
'Manitoulinoceras belongs to Valcouroceratidae'
'Manitouoceras belongs to Proterocameratidae'
'Mcqueenoceras belongs to Proterocameratidae'
'Megadiscosorus belongs to Armenoceratidae'
'Meikeloceras belongs to Ellesmeroceratidae'
'Meitanoceras belongs to Meitanoceratidae'
'Meitanoceratidae belongs to Actinocerida'
'Meniscoceras belongs to Proterocameratidae'
'Mesaktoceras belongs to Georginidae'
'Mesnaquaceras belongs to Geisonoceratidae'
'Metabaltoceras belongs to Baltoceratidae'
'Metaspyroceras belongs to Orthoceratidae'
'Metephippiorthoceras belongs to Proteoceratidae'
'Miamoceras belongs to Oncoceratidae'
'Michelinoceras belongs to Orthoceratidae'
'Microbaltoceras belongs to Baltoceratidae'
'Minganoceras belongs to Valcouroceratidae'
'Mirabiloceras belongs to Allotrioceratidae'
'Monogonoceras belongs to Bassleroceratidae'
'Monomuchites belongs to Proteoceratidae'
'Montyoceras belongs to Hebetoceratidae'
'Moreauoceras belongs to Tarphyceratidae'
'Multicameroceras belongs to Plectronoceratidae'
'Muriceras belongs to Ellesmeroceratidae'
'Murrayoceras belongs to Baltoceratidae'
'Mysterioceras belongs to Mysterioceratidae'
'Mysterioceratidae belongs to Orthocerida'
'Mysticoceras belongs to Proterocameratidae'
'Najaceras belongs to Endoceratidae'
'Nanno belongs to Endoceratidae'
'Narthecoceras belongs to Narthecoceratidae'
'Narthecoceratidae belongs to Endocerida'
'Neokaipingoceras belongs to Endoceratidae'
'Neumatoceras belongs to Oncoceratidae'
'Notocycloceras belongs to Protocycloceratidae'
'Nybyoceras belongs to Armenoceratidae'
'Oderoceras belongs to Proterocameratidae'
'Oelandoceras belongs to Ellesmeroceratidae'
'Ogygoceras belongs to Baltoceratidae'
'Oncoceras belongs to Oncoceratidae'
'Oncoceratida is corrected as Oncocerida and belongs to Nautiloidea'
'Oncoceratidae belongs to Oncocerida'
'Oneotoceras belongs to Ellesmeroceratidae'
'Oonoceras belongs to Oncoceratidae'
'Ordosoceras belongs to Polydesmiidae'
'Ormoceras belongs to Ormoceratidae'
'Ormoceratidae belongs to Actinocerida'
'Orthoceras belongs to Orthoceratidae'
'Orthoceratidae belongs to Orthocerida'
'Orthocerida belongs to Nautiloidea'
'Orthonybyoceras belongs to Ormoceratidae'
'Oxfordoceras belongs to Troedssonellidae'
'Pachendoceras belongs to Baltoceratidae'
'Padunoceras belongs to Padunoceratidae'
'Padunoceratidae belongs to Intejocerida'
'Palaeoceras belongs to Plectronoceratidae'
'Paleocyclendoceras is corrected as Palaeocyclendoceras and belongs to Endoceratidae'
'Paquettoceras belongs to Barrandeoceratidae'
'Paracyclendoceras belongs to Endoceratidae'
'Paracyclostomiceras belongs to Ellesmeroceratidae'
'Paradakeoceras belongs to Ellesmeroceratidae'
'Paradiscoceras belongs to Trocholitidae'
'Paraendoceras belongs to Proterocameratidae'
'Paraplectronoceras belongs to Plectronoceratidae'
'Paravaginoceras belongs to Endoceratidae'
'Parormoceras belongs to Ormoceratidae'
'Parryoceras belongs to Cyrtogomphoceratidae'
'Penhsioceras belongs to Piloceratidae'
'Perkinsoceras belongs to Allotrioceratidae'
'Phragmosiphon belongs to Proterocameratidae'
'Physalactinoceras belongs to Protactinoceratidae'
'Piersaloceras belongs to Ascoceratidae'
'Piloceras belongs to Piloceratidae'
'Piloceratidae belongs to Endocerida'
'Pilotoceras belongs to Tarphyceratidae'
'Pionoceras belongs to Tarphyceratidae'
'Plagiostomoceras belongs to Orthoceratidae'
'Platysiphon belongs to Proterocameratidae'
'Plectoceras belongs to Plectoceratidae'
'Plectoceratidae belongs to Barrandeocerida'
'Plectolites belongs to Trocholitidae'
'Plectronoceras belongs to Plectronoceratidae'
'Plectronoceratidae belongs to Ellesmerocerida'
'Pleurorthoceras belongs to Orthoceratidae'
'Pliendoceras belongs to Proterocameratidae'
'Polydesmia belongs to Polydesmiidae'
'Polydesmiidae belongs to Actinocerida'
'Polygrammoceras belongs to Orthoceratidae'
'Probillingsites belongs to Ascoceratidae'
'Proendoceras belongs to Proterocameratidae'
'Protactinoceras belongs to Protactinoceratidae'
'Protactinoceratidae belongs to Protactinocerida'
'Protactinocerida belongs to Actinoceridea'
'Proteoceras belongs to Proteoceratidae'
'Proteoceratidae belongs to Orthocerida'
'Proterocameroceras belongs to Proterocameratidae'
'Proterocameroceratidae [misspelled as Proterocameratidae] belongs to Endocerida'
'Proterovaginoceras belongs to Endoceratidae'
'Protobactrites belongs to Orthoceratidae'
'Protocyclendoceras belongs to Endoceratidae'
'Protocycloceras belongs to Protocycloceratidae'
'Protocycloceratidae belongs to Ellesmerocerida'
'Protocyptendoceras belongs to Proterocameratidae'
'Protokionoceras belongs to Geisonoceratidae'
'Pseudendoceras belongs to Ellesmeroceratidae'
'Pseudorthoceratidae belongs to Orthocerida'
'Purmanarcoceras belongs to Ellesmeroceratidae'
'Pycnoceras belongs to Estonioceratidae'
'Quebecoceras belongs to Ellesmeroceratidae'
'Rangeroceras belongs to Baltoceratidae'
'Rasmussenoceras belongs to Tripteroceratidae'
'Rectseptoceras belongs to Plectronoceratidae'
'Reedsoceras belongs to Westonoceratidae'
'Retroclitendoceras belongs to Proterocameratidae'
'Rhabdiferous belongs to Baltoceratidae'
'Rhynchorthoceras [misspelled as Rhynochorthoceras] belongs to Lituitidae'
'Richardsonoceras belongs to Oncoceratidae'
'Ringoceras belongs to Graciloceratidae'
'Rioceras belongs to Baltoceratidae'
'Rizoceras belongs to Oncoceratidae'
'Robsonoceras belongs to Ellesmeroceratidae'
'Romingoceras belongs to Oncoceratidae'
'Rossicoceras belongs to Endoceratidae'
'Rossoceras belongs to Padunoceratidae'
'Rudolfoceras belongs to Protocycloceratidae'
'Ruedemannoceras belongs to Ruedemannoceratidae'
'Ruedemannoceratidae belongs to Discosorida'
'Ruthenoceras [misspelled as Ruthenceras] belongs to Plectronoceratidae'
'Saffordoceras belongs to Actinoceratidae'
'Schmidtoceras belongs to Endoceratidae'
'Schuchertoceras belongs to Ascoceratidae'
'Scofieldoceras belongs to Oncoceratidae'
'Seelyoceras belongs to Tarphyceratidae'
'Selkirkoceras belongs to Armenoceratidae'
'Sewardoceras belongs to Yorkoceratidae'
'Shamattawaceras belongs to Ascoceratidae'
'Shantungendoceras belongs to Ellesmeroceratidae'
'Shideleroceras belongs to Shideleroceratidae'
'Shideleroceratidae belongs to Ellesmerocerida'
'Shumardoceras belongs to Estonioceratidae'
'Sigmocycloceras belongs to Troedssonellidae'
'Simardoceras belongs to Westonoceratidae'
'Sinclairoceras belongs to Westonoceratidae'
'Sinoceras belongs to Orthoceratidae'
'Sinoeremoceras belongs to Protactinoceratidae'
'Sinolebetoceras belongs to Ellesmeroceratidae'
'Smithvilloceras belongs to Ellesmeroceratidae'
'Spyroceras belongs to Pseudorthoceratidae'
'Staufferoceras belongs to Valcouroceratidae'
'Stemtonoceras belongs to Ellesmeroceratidae'
'Stenosiphon belongs to Proterocameratidae'
'Stereoplasmoceras belongs to Stereoplasmoceratidae'
'Stereoplasmoceratidae belongs to Orthocerida'
'Stereospyroceras [misspelled as Stereopyroceras] belongs to Proteoceratidae'
'Stolbovoceras belongs to Armenoceratidae'
'Strandoceras belongs to Cyrtogomphoceratidae'
'Subpenhsioceras belongs to Piloceratidae'
'Suecoceras belongs to Endoceratidae'
'Suttonoceras belongs to Diestoceratidae'
'Tajaroceras belongs to Troedssonellidae'
'Talassoceras belongs to Thylacoceratidae'
'Tallinnoceras [misspelled as Tallinoceras] belongs to Emmonsoceratidae'
'Tanycameroceras belongs to Ellesmeroceratidae'
'Tarphyceras belongs to Tarphyceratidae'
'Tarphyceratida is corrected as Tarphycerida and belongs to Cephalopoda'
'Tarphyceratidae belongs to Tarphycerida'
'Tasmanoceras belongs to Endoceratidae'
'Teichertoceras belongs to Westonoceratidae'
'Telleroceras belongs to Yorkoceratidae'
'Thylacoceras belongs to Thylacoceratidae'
'Thylacoceratidae belongs to Endocerida'
'Tofangoceras belongs to Proteoceratidae'
'Tragoceras belongs to Estonioceratidae'
'Triendoceras belongs to Endoceratidae'
'Trifurcatoceras belongs to Endoceratidae'
'Trilacinoceras belongs to Lituitidae'
'Tripteroceras belongs to Tripteroceratidae'
'Tripteroceratidae belongs to Oncocerida'
'Tripterocerina belongs to Tripteroceratidae'
'Trocholites belongs to Trocholitidae'
'Trocholitidae belongs to Tarphycerida'
'Trocholitoceras belongs to Trocholitidae'
'Troedssonella belongs to Troedssonellidae'
'Troedssonellidae belongs to Orthocerida'
'Troedssonoceras belongs to Ormoceratidae'
'Troostoceras belongs to Actinoceratidae'
'Tshingizoceras belongs to Oncoceratidae'
'Tuyloceras belongs to Lowoceratidae'
'Tyrioceras belongs to Lituitidae'
'Ulrichoceras belongs to Cyrtogomphoceratidae'
'Utoceras belongs to Piloceratidae'
'Vaginoceras belongs to Endoceratidae'
'Valcouroceras belongs to Valcouroceratidae'
'Valcouroceratidae belongs to Oncocerida'
'Vaningenoceras belongs to Endoceratidae'
'Vassaroceras belongs to Protocycloceratidae'
'Vaupelia belongs to Oncoceratidae'
'Veneficoceras belongs to Baltoceratidae'
'Ventrolobendoceras belongs to Endoceratidae'
'Ventroloboceras belongs to Ellesmeroceratidae'
'Walcottoceras belongs to Huaihecaratidae'
'Wanwanoceras belongs to Protactinoceratidae'
'Wardoceras belongs to Orthoceratidae'
'Weberoceras belongs to Tarphycerida'
'Weishanhuceras belongs to Acaroceratidae'
'Westonoceras belongs to Westonoceratidae'
'Westonoceratidae belongs to Discosorida'
'Whiteavesites belongs to Clinoceratidae'
'Whitfieldoceras belongs to Clinoceratidae'
'Wichitoceras belongs to Trocholitidae'
'Williamsoceras belongs to Allotrioceratidae'
'Wilsonoceras belongs to Apsidoceratidae'
'Winnipegoceras belongs to Westonoceratidae'
'Wolungoceras belongs to Troedssonellidae'
'Woosteroceras belongs to Ellesmeroceratidae'
'Wutinoceras belongs to Wutinoceratidae'
'Wutinoceratidae belongs to Actinocerida'
'Yanheceras belongs to Yanheceratidae'
'Yanheceratidae belongs to Yanhecerida'
'Yanhecerida belongs to Endoceratoidea'
'Yehlioceras belongs to Endocerida'
'Yorkoceras belongs to Yorkoceratidae'
'Yorkoceratidae belongs to Endocerida'
'Zittelloceras belongs to Oncoceratidae'