| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ptychoceratoidea
Taxonomy
Synonymy list
| Year | Name and author |
|---|---|
| 1871 | Ptychoceratoidea Gill |
| 2007 | Ptychoceratoidea Klein et al. p. 264 |
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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. †Ptychoceratoidea Gill 1871
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Fm. †Hamulinidae Gill 1871
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G. †Amorina Vermeulen 2005
G. †Anahamulina Hyatt 1900
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†Anahamulina picteti Eichwald 1868
†Anahamulina subcylindrica d'Orbigny 1850
†Anahamulina wilcoxensis Imlay 1960
G. †Hamulina d'Orbigny 1850
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†Hamulina aldersona Anderson 1938
†Hamulina astieriana d'Orbigny 1850
Invalid names: Anahamulinidae Breistroffer 1952 [synonym]
Fm. †Megacrioceratidae Vermeulen 2006
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G. †Megacrioceras Delanoy et al. 1987
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†Megacrioceras astierianum d'Orbigny 1850
†Megacrioceras doublieri Jaubert 1856
G. †Shasticrioceras Anderson 1938
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†Shasticrioceras inflatum Anderson 1938
†Shasticrioceras patricki Murphy 1975
†Shasticrioceras poniente Anderson 1938
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Invalid names: Shasticrioceras hesperum Anderson 1938 [synonym], Shasticrioceras hesperum nipponicum Matsumoto 1947 [synonym]
†Shasticrioceras roddai Murphy 1975
†Shasticrioceras whitneyi Anderson 1938
†Shasticrioceras wintunium Anderson 1938
Diagnosis
No diagnoses are available