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Ustatochoerus tedfordi
Taxonomy
Ustatochoerus tedfordi was named by Stevens et al. (2023). Its type specimen is F:AM 24439, a partial skull (skull and jaws ), and it is a 3D body fossil. Its type locality is Warren Barnum Ranch, which is in a Hemingfordian terrestrial horizon in the Runningwater Formation of Nebraska.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Ustatochoerus tedfordi Stevens et al. pp. 128 - 131 figs. Figure 106; Appendix 13A; Table A42 |
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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.
†Ustatochoerus tedfordi Stevens et al. 2023
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. S. Stevens et al. 2023 | Small species of Ustatochoerus (M1-3 length = 90.9 mm, P1-M3 length = 40.1 mm, m1-3 length = 59.1 mm, p1-m3 length = 102 mm) with slightly retracted nasals, a long external narial opening, small facial vacuities, a relatively deep malar, delicate zygomatic arches, a wide, fan-shaped occipital region, and moderately hypsodont teeth with molarized premolars. Distinguished from U. medius by its smaller size, slightly longer nasal length relative to size, and less flaring occiput. |
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1999, Lillegraven 1979, Carroll 1988, Lander 1998, Hendy et al. 2009 | |||||
Age range: Early/Lower Hemingfordian or 18.50000 to 16.30000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Hemingfordian | USA (Nebraska) | Ustatochoerus tedfordi (type locality: 17873) |