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Pantolambda bathmodon
Pantolambda
Name Pantolambda bathmodon
Order Cimolesta
Suborder Pantodonta
Family Pantolambdidae
Class Mammalia
Period Paleocene epoch of the Cenozoic Era
Location Asia and North America
Diet Omnivorous

Pantolambda is an extinct genus of Palaeocene pantodont mammal. Pantolambda lived during the middle Paleocene, and has been found both in Asia and North America. A generalized early mammal, it had a vaguely cat-like body, heavy head, long tail, and five-toed plantigrade feet ending in blunt nails that were neither hooves nor sharp claws. The foot bones articulated in a similar way to the feet of hoofed mammals, and the feet were probably not very flexible.

The teeth had a slenodont structure; enamel ridges with crescent-shaped cusps. Selenodont teeth are found in modern grazers and browsers such as cattle and deer, but Pantolambda's teeth were low-crowned and indicate a not very specialized diet. Pantolambda probably ate a mix of shoots, leaves, fungi, and fruit, which it may have supplemented with occasional insects, worms, or carrion.

Cretaceous mammals, which had to compete with dinosaurs, were generally small insect eaters. Pantolambda was one of the first mammals to expand into the large-animal niches left vacant by the extinction of the dinosaurs. It was large for a Paleocene mammal, about the size of a sheep. Pantolambda and other early pantodonts would quickly evolve into heavy animals such as Barylambda and Coryphodon. These were the first large browsers, pioneering styles of life later followed by many unrelated groups of mammals: rhinos, tapirs, hippos, ground sloths, and elephants.

Pantolambda was a relatively large pantodont the size of an ewe (a female sheep). This oldest representative of the group dwelt in Asia and North America in the mid Paleocene. Pantolambda and Cimolestes descended from and connected with the early ungulates. This animal also had different short and powerful limbs; its foot and hand were generally primitive, with five divergent fingers, which ended in small hooves. Perhaps its diet was varied and not very specialized. The menu consisted of shoots and leaves, mushrooms and fruits, which could be supplemented with insects, worms, or carrion.

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