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Ptyssoceras
Taxonomy
Ptyssoceras was named by Hyatt (1894) [Sepkoski's age data: D Emsi Sepkoski's reference number: 299].
It was assigned to Rutoceratidae by Teichert et al. (1964); and to Nautilida by Sepkoski (2002).
It was assigned to Rutoceratidae by Teichert et al. (1964); and to Nautilida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Ptyssoceras Hyatt |
| 1964 | Ptyssoceras Teichert et al. p. 421 |
| 2002 | Ptyssoceras Sepkoski |
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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. †Ptyssoceras Hyatt 1894
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Diagnosis
No diagnoses are available