A pivotal wrist bone in birds appears earlier in theropods. This could shift views on how flight evolved. An analysis of two theropod dinosaur fossils reveals they possessed a type of wrist bone that is considered essential for flight in birds. This discovery by a team of researchers led by James Napoli, from the Department […]



Summary

A new study suggests the evolution of avian flight may need a reevaluation. Researchers discovered a crucial wrist bone, previously believed unique to birds and essential for flight, appeared much earlier in theropod dinosaurs. Analysis of two theropod fossils showed they possessed this wrist bone. This finding, led by James Napoli, challenges the understanding of how birds evolved flight, indicating that a key adaptation for flight existed prior to the emergence of birds themselves, and possibly for a different purpose initially.

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