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Temporal range: Late Oligocene
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Merycoidodontidae
Genus: Hypsiops
Schultz and Falkenbach (1950)

see text

Hypsiops is an extinct genus of oreodont of the superfamily Merycoidodontoidea, family Merycoidodontidae endemic to North America during the Late Oligocene-Early Miocene epochs (24.8—16.3 mya), existing for approximately 8.5 million years.[1]


Hypsiops was named by Schultz and Falkenbach (1950). It was assigned to Merycoidodontidae by Schultz and Falkenbach (1950) and Lander (1998).[2]


Two specimens were examined by M. Mendoza for body mass. Specimen one was estimated to have a weight of 168.6 kg (371.6 lbs). Specimen two was estimated to have a weight of 223.0 kg (491.6 lbs).[3]

Fossil distribution[edit]

Fossils have been uncovered throughout the western U.S. in Oregon, Montana, Wyoming, as well as Nebraska.


H. bannackensis (syn. Pseudomesoreodon boulderensis, Pseudomesoreodon rolli), H. breviceps (syn. H. johndayensis, Pseudomesoreodon rooneyi, Ticholeptus brachymelis, Ticholeptus petersoni.


  1. ^ PaleoBiology Database: Hypsiops, basic info
  2. ^ C. B. Schultz and C. H. Falkenbach. 1950. Bulletin of the American Museum of Natural History
  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