These giant 'drop bears' with opposable thumbs once scaled trees in Australia. But how did they grow so huge?

Nimbadon lived 15 million years ago, in forests with flesh-eating kangaroos and tree-climbing crocodiles. Our first look inside their fossilised bones has revealed how these giants grew.

These giant 'drop bears' with opposable thumbs once scaled trees in Australia. But how did they grow so huge?

These giant 'drop bears' with opposable thumbs once scaled trees in Australia. But how did they grow so huge?

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These giant 'drop bears' with opposable thumbs once scaled trees

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These giant 'drop bears' with opposable thumbs once scaled trees

Thriving in the face of adversity: Resilient gorillas reveal clues

Wombats – News, Research and Analysis – The Conversation – page 1