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Arman, however, wasn't so sure. ARMAN: Adaptation does not necessarily define diet. DANIEL: So he approached the question of ancient kangaroo extinction by taking a detailed look at the teeth of more ...

Name: Protemnodon viator Weight: 166kg Habitat: Arid areas of Central Australia Movement: Fast, efficient hopper Protemnodon viator was the biggest of the ancient kangaroo species, growing to ...

"Adaptation does not necessarily define diet," he says. He approached the question of ancient kangaroo extinction by taking a detailed look at the teeth of more than 900 kangaroos — a mix of ...

ARMAN: Adaptation does not necessarily define diet. DANIEL: So he approached the question of ancient kangaroo extinction by taking a detailed look at the teeth of more than 900 kangaroos ...

In a mass extinction event some 40,000 years ago, Australia lost 90% of its large species. New research suggests climate change played a much smaller role than once thought, though not all agree.