Mesoreodon is an extinct genus of terrestrial herbivore of the family Merycoidodontidae, subfamily Merycoidodontinae (the oreodonts), endemic to North America during the Whitneyan stage of the Oligocene-Miocene epochs (33—20.6 mya) existing for approximately .
Mesoreodon is an extinct genus of terrestrial herbivore of the family Merycoidodontidae, subfamily Merycoidodontinae (the oreodonts), endemic to North America during the Whitneyan stage of the Oligocene-Miocene epochs (33—20.6 mya) existing for approximately .
== Taxonomy == left|thumb|188x188px|Fossil skull of M. chelonyx, the type species The following fossil species are known: M. chelonyx Scott, 1893 (type species) - Oligocene/Early Miocene (Arikareean) of the western United States (Idaho, Nebraska, Montana, Wyoming) M. floridensis MacFadden & Morgan, 2003 - Late Oligocene of Florida, US (Parachucla Formation) M. minor Douglass, 1903 - Oligocene/Early Miocene (Arikareean to Harrisonian) of the western United States (Oregon, Idaho, Nebraska, South Dakota, Montana, Wyoming)
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).