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Pantolambda
''Pantolambda'' is an extinct genus of Paleocene pantodont mammal. ''Pantolambda'' lived during the middle Paleocene, and has been found both in Asia and North America.
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. ''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.〔Halstead, L.B., ''The Evolution of the Mammals'', Peter Lowe, 1978.〕 Pantodonts such as ''Pantolambda'' were definitely not tree dwellers.
==Description==
''Pantolambda'' was large for a Paleocene mammal, about the size of a sheep. 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.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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