The species of the
genus are among the largest members of the family Merycoidontidae. About the size of a sheep, its fossils are also some of the largest found in the
Badlands. It was much larger than
Merycoidodon and
Miniochoerus, its contemporaries in the Late Oligocene. On the other hand,
Eporeodon was a rare oreodont, as its fossils only make up about one percent of all oreodont fossils found in the Badlands. Their skulls were much shorter and squatter than those of
Merycoidodon, but were longer than those of
Miniochoerus.
Promesoreodon Schultz and Falkenbach, 1949 is a junior synonym of this genus. ==Images==