Seven-foot-tall kangaroos, enormous flightless birds, and a predator that could kill them all - meet Australia's extinct megafauna.
Did the Ice Age kill them off, or were humans to blame?
Read about Australia's megafauna here: http://ngm.nationalgeographic.com/2010/10/dreamtime-animals/achenbach-text
Among the skilfully recreated menagerie is one of our favourites, Thylacoleo carnifex.
Check out the excellent National Geographic picture gallery of Australia's Lost Giants:
Many of the drawings are the work of talented twins Adrie and Alfons Kennis. Check out their website here: http://home.kpn.nl/alad/index2.html