Taxonomic names from A. Hyatt 1900
- Acanthopleuroceras, A. Hyatt 1900 [Polymorphitidae]
- Acrioceras, A. Hyatt 1900 [Ancyloceratidae]
- Alocolytoceras, A. Hyatt 1900 [Lytoceratidae]
- Amoeboceras, A. Hyatt 1900 [Prionoceratidae]
- Anagymnites, A. Hyatt 1900 [Gymnitidae]
- Anahamulina, A. Hyatt 1900 [Hamulinidae]
- Anahoplites, A. Hyatt 1900 [Hoplitidae]
- Analytoceras, A. Hyatt 1900 [Lytoceratidae]
- Anascaphites, A. Hyatt 1900 [Scaphitidae]
- Anascaphites ventricosus (Meek and Hayden 1862) [Scaphitidae]
- Angulatidae, family, A. Hyatt 1900 [unclassified family]
- Anisoceratidae, family, A. Hyatt 1900 [Anisoceratidae]
- Anoploceras, A. Hyatt 1900 [Tainoceratidae]
- Anoploceras ampezzanus (Loretz 1875) [Tainoceratidae]
- Apleuroceras, A. Hyatt 1900 [Aplococeratidae]
- Aplococeras, A. Hyatt 1900 [Aplococeratidae]
- Apsorroceras, A. Hyatt 1900 [Spiroceratidae]
- Arctoceras, A. Hyatt 1900 [Arctoceratidae]
- Bostrychoceras, A. Hyatt 1900 [Nostoceratidae]
- Calycoceras, A. Hyatt 1900 [Acanthoceratidae]
- Calycoceras navicularis (Mantell 1822) [Acanthoceratidae]
- Canavarites, A. Hyatt 1900 [Alsatitinae]
- Ceratites (Florianites), A. Hyatt 1900 [Danubitidae]
- Codoceras, A. Hyatt 1900 [Polyelasmoceratidae]
- Cycloceratidae, family, A. Hyatt 1900 [unclassified family]
- Cyrtorizoceras, A. Hyatt 1900 [Oncoceratidae]
- Cyrtosiceras, A. Hyatt 1900 [Oppeliidae]
- Dactylioidae, family, A. Hyatt 1900 [unclassified family]
- Dasyceras, A. Hyatt 1900 [Phylloceratidae]
- Dasyceras rakosense (Herbich 1878) [Juraphyllitidae]
- Diadochoceras, A. Hyatt 1900 [Parahoplitidae]
- Diaplococeras, A. Hyatt 1900 [Tirolitidae]
- Diodoceras, A. Hyatt 1900 [Trigonoceratidae]
- Diplacomoceras, A. Hyatt 1900 [Placenticeratidae]
- Diplomoceras, A. Hyatt 1900 [Diplomoceratidae]
- Dipoloceras, A. Hyatt 1900 [Mojsisovicsiidae]
- Dirrymoceras, A. Hyatt 1900 [Ancyloceratidae]
- Distoloceras, A. Hyatt 1900 [Neocomitidae]
- Engonoceratidae, family, A. Hyatt 1900 [Engonoceratidae]
- Erymnoceras, A. Hyatt 1900 [Pachyceratidae]
- Gemmellaroceras, A. Hyatt 1900 [Polymorphitidae]
- Gigantoceras, A. Hyatt 1900 [Gigantoceras]
- Glochiceras, A. Hyatt 1900 [Oppeliidae]
- Hemibaculites, A. Hyatt 1900 [Heteroceratidae]
- Hemibaculites obliquatum (d'Orbigny 1840) [Crioceratitidae]
- Hyphantoceras, A. Hyatt 1900 [Nostoceratidae]
- Hystatoceras, A. Hyatt 1900 [Brancoceratidae]
- Hystatoceratidae, family, A. Hyatt 1900 [Hystatoceratidae]
- Hysteroceras, A. Hyatt 1900 [Brancoceratidae]
- Hystrichoceras, A. Hyatt 1900 [unclassified genus]
- Iberites, A. Hyatt 1900 [Hungaritidae]
- Jahnnites, A. Hyatt 1900 [Jahnnites]
- Jahnnites geinitzii, d'Orbigny 1850 [Jahnnites geinitzii]
- Keyserlingites, A. Hyatt 1900 [Keyserlingitidae]
- Lenticeratidae, family, A. Hyatt 1900 [Lenticeratidae]
- Lenticeratinae, subfamily (A. Hyatt 1900) [Sphenodiscidae]
- Libycoceras, A. Hyatt 1900 [Sphenodiscidae]
- Lithacoceras, A. Hyatt 1900 [Ataxioceratidae]
- Lopholobites, A. Hyatt 1900 [Pulchelliidae]
- Lyticoceras, A. Hyatt 1900 [Neocomitidae]
- Mammitidae, family, A. Hyatt 1900 [Acanthoceratidae]
- Meneghiniceras, A. Hyatt 1900 [Juraphyllitidae]
- Meneghiniceras lariense (Meneghini 1875) [Juraphyllitidae]
- Metacanthoplites, A. Hyatt 1900 [Acanthoceratidae]
- Metacanthoplites rhotomagensis (Brongniart 1822) [Acanthoceratidae]
- Mixosiphonoceras, A. Hyatt 1900 [Jovellaniidae]
- Morphoceratidae, family, A. Hyatt 1900 [Morphoceratidae]
- Octameroceras, A. Hyatt 1900 [Hemiphragmoceratidae]
- Olenikites, A. Hyatt 1900 [Olenikitidae]
- Ostlingoceras, A. Hyatt 1900 [Turrilitidae]
- Oxybeloceras, A. Hyatt 1900 [Diplomoceratidae]
- Palaeogoniatites, A. Hyatt 1900 [Teicherticeratidae]
- Paraceratites, A. Hyatt 1900 [Ceratitidae]
- Paractinoceras (A. Hyatt 1900) [Actinoceratidae]
- Paralenticeras, A. Hyatt 1900 [Sphenodiscidae]
- Parapachydiscus, A. Hyatt 1900 [Pachydiscidae]
- Parapachydiscus gollevillensis (d'Orbigny 1847) [Pachydiscidae]
- Parapsiloceras, A. Hyatt 1900 [Lytoceratidae]
- Parapsiloceras calliphyllum, A. Hyatt 1900 [Lytoceratidae]
- Parastephanites, A. Hyatt 1900 [Stephanitidae]
- Paratornoceras, A. Hyatt 1900 [Dimeroceratidae]
- Pedioceratidae, family, A. Hyatt 1900 [Crioceratitidae]
- Peroniceratidae, family, A. Hyatt 1900 [Peroniceratidae]
- Peroniceratinae, subfamily (A. Hyatt 1900) [Collignoniceratidae]
- Phricodoceras, A. Hyatt 1900 [Phricodoceratidae]
- Physodoceras, A. Hyatt 1900 [Aspidoceratidae]
- Placenticeratidae, family, A. Hyatt 1900 [Placenticeratidae]
- Platylenticeras, A. Hyatt 1900 [Polyptychitidae]
- Pleurolytoceras, A. Hyatt 1900 [Lytoceratidae]
- Pleuropachydiscus, A. Hyatt 1900 [unclassified genus]
- Plococeras, A. Hyatt 1900 [Dinaritidae]
- Poecilomorphidae, family, A. Hyatt 1900 [unclassified family]
- Projovellania, A. Hyatt 1900 [Jovellaniidae]
- Protengonoceras, A. Hyatt 1900 [Engonoceratidae]
- Protetragonites, A. Hyatt 1900 [Protetragonitidae]
- Protobactrites, A. Hyatt 1900 [Protobactritidae]
- Protocycloceras, A. Hyatt 1900 [Protocycloceratidae]
- Protophiceras, A. Hyatt 1900 [Ophiceratidae]
- Pseudoceltites, A. Hyatt 1900 [Kashmiritidae]
- Pseudodinarites, A. Hyatt 1900 [Dinaritidae]
- Pseudohaploceras, A. Hyatt 1900 [Desmoceratidae]
- Psilotissotia, A. Hyatt 1900 [Pulchelliidae]
- Rhaetites, A. Hyatt 1900 [Arcestidae]
- Rizoceratidae, family, A. Hyatt 1900 [unclassified family]
- Schistophylloceras, A. Hyatt 1900 [Juraphyllitidae]
- Siemiradzkia, A. Hyatt 1900 [Perisphinctidae]
- Sigaloceras, A. Hyatt 1900 [Kosmoceratidae]
- Sphenodiscidae, family, A. Hyatt 1900 [Sphenodiscidae]
- Streblites, A. Hyatt 1900 [Oppeliidae]
- Streblites pictus, A. Hyatt 1900 [Oppeliidae]
- Strenoceras, A. Hyatt 1900 [Parkinsoniidae]
- Thurmannia, A. Hyatt 1900 [Neocomitidae]
- Tissotiidae, family, A. Hyatt 1900 [Tissotiidae]
- Tonoceras, A. Hyatt 1900 [Ancyloceratidae]
- Torneutoceras, A. Hyatt 1900 [Hamitidae]
- Tragophylloceras, A. Hyatt 1900 [Juraphyllitidae]
- Ussurites, A. Hyatt 1900 [Ussuritidae]
- Wyomingites, A. Hyatt 1900 [Dieneroceratidae]
- Zurcheridae, family, A. Hyatt 1900 [Hammatoceratidae]