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Aphetoceras
Taxonomy
Aphetoceras was named by Hyatt (1894) [Sepkoski's age data: O Aren-l O Llvi Sepkoski's reference number: 298,524]. Its type is Aphetoceras americanum.
It was assigned to Deltoceratidae by Ulrich et al. (1942); and to Estonioceratidae by Teichert et al. (1964), Crick (1981), Kröger and Landing (2008) and Evans (2011).
It was assigned to Deltoceratidae by Ulrich et al. (1942); and to Estonioceratidae by Teichert et al. (1964), Crick (1981), Kröger and Landing (2008) and Evans (2011).
Species
A. americanum (type species), A. attenuatum, A. boreale, A. evolutum, A. farnsworthi, A. oderi, A. ozarkensis, A. ruedemanni, A. subcostulatum
Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Aphetoceras Hyatt p. 447 |
| 1942 | Aphetoceras Ulrich et al. |
| 1964 | Aphetoceras Teichert et al. p. 358 |
| 1981 | Aphetoceras Crick p. 228 |
| 2008 | Aphetoceras Kröger and Landing |
| 2011 | Aphetoceras Evans |
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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. †Aphetoceras Hyatt 1894
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†Aphetoceras americanum Hyatt 1894
†Aphetoceras attenuatum Hyatt 1894
†Aphetoceras boreale Hyatt 1894
†Aphetoceras evolutum Ulrich et al. 1942
†Aphetoceras farnsworthi Billings 1861
†Aphetoceras oderi Ulrich et al. 1942
†Aphetoceras ozarkensis Cullison 1944
†Aphetoceras ruedemanni Ulrich et al. 1942
†Aphetoceras subcostulatum Ulrich et al. 1942
Diagnosis
No diagnoses are available