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.

Scientists Think They Know How This Extinct Bear-Like Marsupial Got So Big : ScienceAlert

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

Metatherians (Part 1 of 2): Extinct Megafauna

Queensland tiger, Encyclopaedia of Cryptozoology

The Living Animals of the World. Vol. 1

Jo Manion on LinkedIn: Australian footprints are the oldest known

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

Giant tree-kangaroos once lived in unexpected places all over

How did giant, tree-climbing 'drop bears' grow so BIG in Australia? - Australian Geographic

How Australia's drop bear came to be its most deadly -- and most fake -- predator, bear

Metatherians (Part 1 of 2): Extinct Megafauna