National Geographic : 2010 Oct
GIANT WOMBAT Diprotodon optatum A plodding colossus, D. optatum, the largest known marsupial, grew to rhinoceros size. The biggest ones reached over six feet tall at the shoulder and ten feet long, their furry, pillar-like legs supporting three tons of weight. Diprotodon occupied a niche similar to the African elephant, browsing on shrubs and collecting at water holes. Its SUV size and lack of agility would have made it a tempting target for marsupial lions and human hunters.