A reconstructed model of a "diprotodon", an ancient rhino-sized mega-wombat, is seen at the Australian Museum in Sydney on Thursday. Australian scientists Thursday unveiled the biggest-ever graveyard ... more 

A reconstructed model of a "diprotodon", an ancient rhino-sized mega-wombat, is seen at the Australian Museum in Sydney on Thursday. Australian scientists Thursday unveiled the biggest-ever graveyard of diprotodons, with the site potentially holding valuable clues on the species' extinction. The remote fossil deposit in outback Queensland state is thought to contain up to 50 diprotodon skeletons less