Synthetoceras tricornatus Altirhinus indicates that it fed on

indicates that it fed on large bony fish

terrestrial that progressively adapted to the aquatic environment

South Dakota and Wyoming

Altura 248 mm

The proportions of its bones suggest that it combined strength and agility

Synthetoceras tricornatus Altirhinus indicates that it fed onSynthetoceras tricornatus was an extinct artiodactyl mammal belonging to Protoceratidae, an exclusively North American family of ungulates that has no living representatives. It lived during the Late Miocene of North America and is particularly well represented in Clarendonian faunas from the southern United States, with important records from Texas and other regions of the Great Plains. Although its general appearance may superficially resemble that