(Science: paleontology) Resembling, or allied to, the genus oreodon (a.k.a. Merycoidodon). An extinct Artiodactyl (even-toed ungulate) very common in North and Central American grasslands/savannas during the Oligocene epoch.
Around 50 species belong to the (extinct) family Merycoidodontidae (a.k.a. Oreodontidae). Sometimes taxonomically linked to the pig-like Suina, sometimes to the Ruminanta, and sometimes placed in its own infraorder, Oreodonta.