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Taxonomy
Neotragocerus improvisus was named by Matthew and Cook (1909) [genotype]. Its type specimen is AMNH 14141, a partial skull (complete horn-core), and it is a 3D body fossil. Its type locality is ZX Bar, which is in a Hemphillian terrestrial horizon in the Snake Creek Formation of Nebraska. It is the type species of Neotragocerus.
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Neotragocerus improvisus Matthew and Cook p. 413 fig. 26 |
| 1915 | Neotragocerus improvisus Sinclair |
| 2022 | Neotragocerus improvisus Martin and Mead pp. e2163176-16 figs. Figs. 2A–B, 3B |
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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.
†Neotragocerus improvisus Matthew and Cook 1909
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. E. Martin and J. I. Mead 2022 | Medium-sized bovid; horn cores straight and short with finely striated surface, delicate overall structure, indistinct pedicle; brachyselenodont molars. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, subp = subphylum | |||||
| References: Carroll 1988, Nowak 1991, Hendy et al. 2009, Nowak 1999 | |||||
Age range: Hemphillian or 10.30000 to 4.90000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Hemphillian | USA (Nebraska) | Neotragocerus improvisus (18033 18323) | |
| Late/Upper Hemphillian | USA (Nebraska) | Neotragocerus improvisus (type locality: 18499) |