Pterosaurs should have been too big to fly – so how did they manage it?

[PhysOrg]

Imagine an animal the size of a small airplane flying above your head. This is what you might have seen 70m years ago when giant pterosaurs roamed the skies. These flying reptiles that lived above the dinosaurs' heads during the Mesozoic era were the largest animals ever to fly. The biggest pterosaurs, giant azhdarchids, had wingspans of between 10 and 11 metres.

 

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