Australia's Lost Giants (via CFZ Australia)

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:

http://ngm.nationalgeographic.com/2010/10/dreamtime-animals/toensing-photography

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