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Trigonias osborni
Taxonomy
Trigonias osborni was named by Lucas (1900) [genotype]. Its type specimen is USNM 3924, a partial skull (the anterior part of the palatal portion of the cranium bearing on the right side three incisors, a canine, and the first three premolars, and on the left side ), and it is a 3D body fossil.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Trigonias osborni Lucas p. 221 figs. 1, 2 |
| 1902 | Trigonias osborni Hay p. 642 |
| 1921 | Trigonias osborni Troxell |
| 1923 | Trigonias tetradactylum Osborn |
| 1927 | Trigonias paucidens Wood |
| 1928 | Caenopus premitis Gregory and Cook |
| 1928 | Trigonias hypostylus Gregory and Cook |
| 1928 | Trigonias precopei Gregory and Cook |
| 1928 | Trigonias preoccidentalis Gregory and Cook |
| 1928 | Trigonias taylori Gregory and Cook |
| 1931 | Trigonias hypostylus Wood |
| 1931 | Trigonias taylori Wood |
| 1931 | Trigonias cooki Wood p. 425 figs. 3 and 4 |
| 1934 | Procaenopus premitis Figgins |
| 1941 | Caenopus premitis Scott |
| 1941 | Trigonias taylori Scott |
| 2002 | Trigonias osborni Antoine et al. |
| 2005 | Trigonias osborni Prothero pp. 35-36 |
| 2010 | Trigonias osborni Antoine et al. |
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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.
†Trigonias osborni Lucas 1900
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Invalid names: Caenopus premitis Gregory and Cook 1928 [synonym], Trigonias cooki Wood 1931 [synonym], Trigonias hypostylus Gregory and Cook 1928 [synonym], Trigonias paucidens Wood 1927 [synonym], Trigonias precopei Gregory and Cook 1928 [synonym], Trigonias preoccidentalis Gregory and Cook 1928 [synonym], Trigonias taylori Gregory and Cook 1928 [synonym], Trigonias tetradactylum Osborn 1923 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1991, Lillegraven 1979, Hendy et al. 2009, Ji et al. 2002, Carroll 1988 | |||||
Age range: Chadronian or 37.00000 to 33.90000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chadronian | USA (Wyoming) | Trigonias osborni (17011) | |
| Chadronian | USA (Colorado) | Caenopus premitis, Trigonias hypostylus, Trigonias osborni, Trigonias precopei, Trigonias preoccidentalis, Trigonias taylori (99642) Trigonias osborni (16977) | |
| Chadronian | Canada (Saskatchewan) | Trigonias osborni (16919) | |
| Chadronian | USA (Montana) | Trigonias osborni (17010 17041) | |
| Chadronian | USA (South Dakota) | Trigonias osborni (16936 16938) Trigonias paucidens (17012) | |
| Chadronian | USA (Nebraska) | Trigonias osborni (16930 17040) |