Protitanotherium

Protitanotherium
Temporal range: Eocene
Protitanotherium, second from the top
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Brontotheriidae
Subfamily: Brontopinae
Genus: Protitanotherium
Gregory (1912)

Protitanotherium emarginatum is a brontothere endemic to North America during the Eocene living from 46.2—33.9 mya, existing for approximately 12.3 million years.[1]

Taxonomy

Protitanotherium was named by Osborn (1929) [name suggested by Hatcher 1895; raised to genus level]. It is not extant. It was synonymized subjectively with Diplacodon by Lucas (1983). It was assigned to Brontotheriidae by Osborn (1929), Carroll (1988) and Mader (1989).[2]

Morphology

A single specimen was examined by M. Mendoza for body mass and estimated to have a weight of 2.38 kg (5.2 lb).[3]

References

  1. ↑ PaleoBiology Database: Brontopinae, basic info
  2. ↑ B. J. Mader. 1989. In D. R. Prothero and R. M. Schoch (eds.), The Evolution of Perissodactyls
  3. ↑ 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


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