Evolution Down Under
How did Australia come to be marsupial heaven?

The Extinction Enigma
Who or what killed off Australia's biggest creatures 45,000 years ago?

Anatomy of Thylacoleo
Explore what the marsupial lion's skeleton reveals about how it lived.

Australia's
Vanished Beasts
A 25-foot lizard. A carnivorous kangaroo. See these and other extinct animals.