The marsupial lion ( Thylacoleo carnifex ) is an extinct species of carnivorous marsupial mammal that lived in Australia from the early to the late Pleistocene ( 1,600,000-46 ,000 years ago ) .
The Marsupial lion , Thylacoleo , is an extinct carnivorous marsupial which lived in Australia from 1,600,000 to 46,000 years ago .