It is also thought to be one of the earliest known Cenozoic - aged mammalian predators that would have preyed on other mammals .
Mentoclaenodon is one of the largest European mammals during the Paleocene .
Mentoclaenodon is also thought to be one of the earliest known Cenozoic - aged mammalian predators that would have preyed on other mammals .
Mentoclaenodon is one of the largest European mammals during the Paleocene .