Paleontologists Describe ‘Monkeydactyl,’ a Pterosaur That May Have Had an Opposable Thumb

A pterosaur with a 3-foot wingspan clambered around trees using claws and an opposable thumb some 160 million years ago in what is now Liaoning, China, according to a study published today in Current Biology. It’s the first pterosaur and oldest known animal to appear to have this trait.

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