Peraceras
| Peraceras Temporal range: Miocene | |
|---|---|
| Conservation status | |
| Fossil | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Perissodactyla |
| Family: | Rhinocerotidae |
| Subfamily: | Aceratheriinae |
| Genus: | Peraceras Cope, 1880 |
Peraceras is an extinct genus of rhinoceros endemic to North America during the Miocene, living from 20.6—10.3 mya and existing for approximately 10.3 million years.[1]
Taxonomy
Peraceras was named by Cope (1880). Its type is Peraceras superciliosum. It was assigned to Rhinocerotidae by Cope (1880) and Carroll (1988); and to Aceratheriinae by Prothero (1998).[2][3]
Morphology
Four specimens were examined by M. Mendoza, C. M. Janis, and P. Palmqvist as well as M. Fortelius and J. Kappelman for estimated body mass with the results as follows:[4][5]
- Specimen 1: 98.7 kg (220 lb)
- Specimen 2: 315.7 kg (700 lb)
- Specimen 3: 408.6 kg (900 lb)
- Specimen 4: 121.7 kg (270 lb)
References
- ↑ PaleoBiology Database: Peraceras, basic info
- ↑ R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W.H. Freeman and Company
- ↑ D. R. Prothero. 1998. Rhinocerotidae. in C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary mammals of North America 595-605
- ↑ M. Mendoza, C. M. Janis, and P. Palmqvist. 2006. Estimating the body mass of extinct ungulates: a study on the use of multiple regression. Journal of Zoology 270(1):90-101
- ↑ M. Fortelius and J. Kappelman. 1993. The largest land mammal ever imagined. Zoological Journal of the Linnean Society 108(1):85-101 Interscience