Trigonias Explained

Trigonias (Greek: "triangular" (trigonos), "ias" [denotes possession]^[1]) is an extinct genus of rhinocerotid from the late Eocene (Chadronian) some 35 million years ago of North America.^[2] Trigonias was about 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.^[3]

A specimen of T. osborni was estimated to have a weight of about .^[4]

References

• Prothero, Donald R. 2005. The Evolution of North American Rhinoceroses. Cambridge University Press, Cambridge, 218 pp. 

Notes and References

1. Web site: Glossary. American Museum of Natural History. https://web.archive.org/web/20211120123130/https://research.amnh.org/paleontology/perissodactyl/concepts/glossary. 20 November 2021.
2. Prothero, 2005
3. Book: Palmer, D.. 1999 . The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. Marshall Editions. London. 264. 1-84028-152-9.
4. http://paleodb.org/cgi-bin/bridge.pl?a=basicTaxonInfo&taxon_no=52444