Its remains were discovered in 1997 in the Elrhaz Formation in Niger by a team led by Paul Sereno

Skull and jaw

Longitud 187 mm

1:35 scale - 141 mm long

Their disappearance highlights the vulnerability of certain species to changes in their environment and other adverse factors

Synthetoceras tricornatus Khankhuuluu Its remains were discovered inSynthetoceras 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