Metarhinus

Metarhinus Temporal range: Eocene PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Perissodactyla
Family:	Brontotheriidae
Subfamily:	Dolichorhininae
Genus:	Metarhinus Osborn (1908)
Species
M. fluvialtilis M. abbotti M. pater

Metarhinus is a genus of brontothere endemic to North America during the Eocene living from 46.2—42 mya, existing for approximately 4.2 million years.^[1]

Taxonomy

Metarhinus was named by Osborn (1908). It is not extant. Its type is Metarhinus fluviatilis. It was assigned to Brontotheriidae by Osborn (1908) and Carroll (1988); and to Dolichorhininae by Mader (1998).^[2]

Morphology

A single specimen was examined by M. Mendoza for body mass and was estimated to have a weight of 210.6 kg (460 lb).^[3]

References

1. ^ PaleoBiology Database: Mesatirhinus, basic info
2. ^ B. J. Mader. 1998. Brontotheriidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary Mammals of North America 1:525-536
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

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