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Onychoceras
Taxonomy
Onychoceras was named by Wunstrorf (1905) [Sepkoski's age data: J Toar-u Sepkoski's reference number: 302]. Its type is Cyrtoceras confertissimum.
It was assigned to Hammatoceratinae by Howarth (2013).
It was assigned to Hammatoceratinae by Howarth (2013).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1905 | Onychoceras Wunstrorf |
| 2013 | Onychoceras Howarth p. 103 |
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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. †Onychoceras Wunstrorf 1905
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†Onychoceras confertissimum Whitfield 1936
†Onychoceras differens Wunstorf 1907
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 Late/Upper Toarcian to the top of the Aalenian or 180.40000 to 170.90000 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Levesquei | France (Deux-Sevrès) | O. differens (140875 140876) | |
| Levesquei | Spain | O. sp. (147093 147094 147099 147102 147107) | |
| Late/Upper Toarcian | France | O. differens (161677 170417 170418 170419) O. simulator (161678) | |
| Aalenian | Iran | O. sp. A (155326) |