The bones of a 160-million-year-old dinosaur are helping scientists solve one of evolution’s biggest mysteries: how birds gained flight. Hidden within the wrist of a small, feathered dinosaur lies a ...

Eight small bones in your wrist give it flexibility and the necessary range of movements. These bones, arranged in two rows, include the scaphoid and lunate bones in the upper row, close to the ...

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. Subscribe to our newsletter for ...

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 ...