From Wikipedia, the free encyclopedia
Jump to: navigation, search
Temporal range: Late Oligocene - Early Miocene
Phenacocoelus parvus.jpeg
Phenacocoelus parvus teeth
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Merycoidodontidae
Genus: Phenacocoelus
Peterson (1907)

see text

Phenacocoelus is an extinct genus of oreodont of the family Merycoidodontidae, subfamily Merycoidodontinae, endemic to North America during the Late Oligocene-Early Miocene subepochs (24.8—20.6 mya), existing for approximately 4.2 million years.[1]


Phenacocoelus was named by Peterson (1907). Its type is Phenacocoelus typus. It was assigned to Merycoidodontidae by Peterson (1907) and Lander (1998).[2][3]


A single specimen was examined by M. Mendoza for body mass and was estimated to have a weight of 73.0 kg (160.9 lbs).[4]

Fossil distribution[edit]

Fossils have been uncovered in eastern Wyoming and western Nebraska


Phenacocoelus typus (syn. P. munroensis).


  1. ^ PaleoBiology Database: Phenacocoelus, basic info
  2. ^ O. A. Peterson. 1907. Annals of Carnegie Museum
  3. ^ B. Lander. 1998. Oreodontoidea. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary mammals of North America 402-425
  4. ^ 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