Sarkastodon


Sarkastodon is an extinct genus of mammal within the creodont family Oxyaenidae that lived during the upper Eocene, approximately 35 million years ago. It was a large, carnivorous animal that lived in what is today Mongolia. Sarkastodon is known only from a skull and jawbones. Sarkastodon, like creodonts in general, was probably a hypercarnivore that preyed on large mammals in its range during the Late Eocene, such as brontotheres, chalicotheres, and rhinoceroses. Its weight is estimated at, and its length at 3 m.

Discovery

The type specimens of S. mongoliensis are known from Eocene deposits from the Irdin Manha Formation of Mongolia. Additional material referred to Sarkastodon is known from the Ulan Shireb beds of Inner Mongolia. These specimens were discovered by Walter W. Granger in 1930, on an expedition to the Gobi Desert.

Palaeobiology

Sarkastodon was a hypercarnivore, with hyaena-like dentition specialised in bone-cracking. The sharp, slicing premolars and crushing molars enabled Sarkastodon to eat both bone and flesh. It was probably an ambush predator, not a fast runner.