Trigonias
| Trigonias Temporal range: late Eocene[1] | |
|---|---|
 | |
| T. osborni | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Perissodactyla |
| Family: | Rhinocerotidae |
| Genus: | †Trigonias Lucas, 1900 |
| Type species | |
| †Trigonias osborni | |
| Species[2] | |
| |
| Synonyms | |
| |
Trigonias is an extinct genus of rhinoceros from the late Eocene (Chadronian) some 35 million years ago of North America (Prothero, 2005).
Restoration by Jay Matternes
Trigonias was about 2.1 m (7 ft) long and, despite lacking horns, looked a lot like modern rhinos. Its front legs had five toes (as contrasted with three in modern rhinos), the fifth of which was vestigal.[4]
A specimen of T. osborni was estimated to have a weight of about 391.4 kg (862.9 lbs).[5]
Notes
- ↑ Prothero, 2005, p. 184.
- ↑ Prothero, 2005, pp. 35-37.
- ↑ Prothero, 2005, p. 35.
- ↑ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 264. ISBN 1-84028-152-9.
- ↑ http://paleodb.org/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=52444
References
- Prothero, Donald R. 2005. The Evolution of North American Rhinoceroses. Cambridge University Press, Cambridge, 218 pp. ISBN 0-521-83240-3
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