Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Polyptychoceras (Polyptychoceras)
Taxonomy
Polyptychoceras (Polyptychoceras) was named by Yabe (1927).
It was assigned to Polyptychoceras by Kennedy and Summesberger (1999).
It was assigned to Polyptychoceras by Kennedy and Summesberger (1999).
Subtaxa
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1927 | Polyptychoceras (Polyptychoceras) Yabe |
1999 | Polyptychoceras (Polyptychoceras) Kennedy and Summesberger p. 29 |
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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.
Subg. †Polyptychoceras (Polyptychoceras) Yabe 1927
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†Polyptychoceras (Polyptychoceras) obliquecostatum Schluter 1872
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Invalid names: Hamites berkelis Schluter 1876 [synonym]
†Polyptychoceras (Polyptychoceras) obstrictum Jimbo 1894
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
References: Kiessling 2004, Kiessling 2003 |
Age range: base of the Early/Lower Santonian to the top of the Late/Upper Campanian or 85.80000 to 70.60000 Ma
Collections (17 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Santonian | USA (California) | Polyptychoceras obstrictum (86954) | |
Santonian | Japan | Polyptychoceras sp. (62214 62215 62216 62217) | |
Santonian | Antarctica | Polyptychoceras obstrictum (83371 83372 83373) | |
Santonian | Argentina | Polyptychoceras sp. (66644) | |
Early/Lower Santonian | Japan (Hokkaido) | Polyptychoceras obstrictum (94682) | |
Campanian | Japan | Polyptychoceras obatai (62236) Polyptychoceras sp. (62232 62233 62237 62239) | |
Late/Upper Campanian | Austria | Polyptychoceras obliquecostatum (48008) | |
Maastrichtian | Russian Federation (Sakhalin) | Diplomoceras obstrictum (64608) |