A skull and other fossils from northeastern Australia belong to a new species in the extinct family of marsupial lions. This newly named species, Wakaleo schouteni, was a predator about the size of a ...

Marsupial lions come in all sizes. Previous research suggests some of the mammals were as small as squirrels, and researchers today are saying a new species was dog-sized. "The identification of these ...

For the better part of the last 25 million years, a group of now-extinct marsupials roamed the wilds of what is now eastern Australia. These marsupials, called palorchestids, weighed upwards of 2,200 ...