Trigonias
Appearance
Trigonias | |
---|---|
![]() | |
T. osborni | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Perissodactyla |
Family: | Rhinocerotidae |
Genus: | †Trigonias Lucas, 1900 |
Type species | |
†Trigonias osborni | |
Species[2] | |
| |
Synonyms | |
|
Trigonias (Greek: "triangular" (trigonos), "ias" [denotes possession][3]) is an extinct genus of rhinocerotid from the late Eocene (Chadronian) some 35 million years ago of North America.[4] Trigonias was about 2.1 metres (6 ft 11 in) 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 vestigial.[5]
A specimen of T. osborni was estimated to have a weight of about 391 kilograms (862 lb).[6]
Notes
[edit]- ^ Prothero, 2005, p. 184.
- ^ a b Prothero, 2005, pp. 35-37.
- ^ "Glossary. American Museum of Natural History". Archived from the original on 20 November 2021.
- ^ Prothero, 2005
- ^ 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 [dead link]
References
[edit]- Prothero, Donald R. 2005. The Evolution of North American Rhinoceroses. Cambridge University Press, Cambridge, 218 pp. ISBN 0-521-83240-3