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Hemiptychoceras
Taxonomy
Hemiptychoceras was named by Spath (1925) [Sepkoski's age data: K Albi-u K Ceno-l]. Its type is Ptychoceras gaultinum.
It was assigned to Ammonoidea by Sepkoski (2002); and to Hamitidae by Kennedy (1994), Szives (2007).
It was assigned to Ammonoidea by Sepkoski (2002); and to Hamitidae by Kennedy (1994), Szives (2007).
Species
Species lacking formal opinion data
Synonymy list
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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.
G. †Hemiptychoceras Spath 1925
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†Hemiptychoceras gaultinum Pictet 1847
†Hemiptychoceras tropicum Kossmat 1897
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Early/Lower Albian to the top of the Middle Cenomanian or 113.20000 to 93.90000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Albian - Middle Albian | France | H. subgaultinum (13499) | |
| Late/Upper Albian | France | H. gaultinum (58527) H. sp. (58364) | |
| Late/Upper Albian | Angola | Ptychoceras gaultinum (210730) | |
| Early/Lower Cenomanian | France | H. subgaultinum (13500) | |
| Middle Cenomanian | France | H. tropicum (82843) |