An analysis of two theropod dinosaur fossils has shown that they had a type of carpal bone (pisiform) in their wrists—a bone considered important to flight in birds. This discovery by a team of ...

A tiny, overlooked wrist bone called the pisiform may have played a pivotal role in bird flight and it turns out it evolved far earlier than scientists thought. Fossils from bird-like dinosaurs in ...

New Haven, Conn. — The evolutionary path from dinosaurs to birds included the development of a tiny wrist bone that ultimately proved crucial for stabilizing wings in flight. A new study suggests that ...

Wrist evolution helped birds to conquer the air. Fossil data and analysis of a modern bird’s development reveal that this evolution preceded bird origins Xing Xu is at the Institute of Vertebrate ...