Hyaenodon, skull Protoceratops it picked up shells along

it picked up shells along the way to its final resting-place

Its ears were poorly developed

which was likely held rigid by ossified tendons

rex but smaller in size

Hyaenodon, skull Protoceratops it picked up shells alongHyaenodon ("hyaena toothed") is the type genus of Hyaenodontidae, a group of extinct carnivorous creodonts of the family Hyaenodontidae endemic to all continents except South America, Australia and Antarctica. They lived from 42 15. 9 million years a go existing for approximately 26. 1 million years. Some species of this genus were among the largest terrestrial carnivorous mammals of their time; others were only of the size of a marten. Hyaenodon is