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Didymoceras nebrascense
Taxonomy
Ancyloceras nebrascensis was named by Meek and Hayden (1856). It is not a trace fossil.
It was recombined as Turrilites nebrascensis by Meek and Hayden (1856); it was recombined as Helicoceras nebrascense by Meek and Hayden (1860); it was recombined as Heteroceras nebrascense by Stanton (1888); it was recombined as Cirroceras nebraskense by Wright (1957); it was recombined as Nostoceras (Didymoceras) nebrascense by Wright (1996); it was recombined as Didymoceras nebrascense by Kennedy and Bilotte (1995) and Kennedy et al. (2000).
It was recombined as Turrilites nebrascensis by Meek and Hayden (1856); it was recombined as Helicoceras nebrascense by Meek and Hayden (1860); it was recombined as Heteroceras nebrascense by Stanton (1888); it was recombined as Cirroceras nebraskense by Wright (1957); it was recombined as Nostoceras (Didymoceras) nebrascense by Wright (1996); it was recombined as Didymoceras nebrascense by Kennedy and Bilotte (1995) and Kennedy et al. (2000).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1856 | Ancyloceras nebrascensis Meek and Hayden p. 71 |
| 1856 | Turrilites nebrascensis Meek and Hayden p. 280 |
| 1860 | Helicoceras nebrascense Meek and Hayden p. 185 |
| 1888 | Heteroceras nebrascense Stanton p. 186 |
| 1894 | Emperoceras beecheri Hyatt p. 575 figs. pl. 14, figs. 15-17 |
| 1902 | Heteroceras simplicostatum Whitfield p. 68 figs. pls. 23-27 |
| 1957 | Cirroceras nebraskense Wright p. 224 |
| 1957 | Emperoceras simplicostatum Wright p. 224 |
| 1995 | Didymoceras nebrascense Kennedy and Bilotte p. 364 |
| 1996 | Nostoceras (Didymoceras) nebrascense Wright p. 247 |
| 2000 | Didymoceras nebrascense Kennedy et al. p. 7 |
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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.
†Didymoceras nebrascense Meek and Hayden 1856
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Invalid names: Emperoceras beecheri Hyatt 1894 [synonym], Emperoceras simplicostatum Whitfield 1902 [synonym]
Diagnosis
No diagnoses are available