Chinese fossil find shows birds shed their dinosaur tails step by step

A fossil discovered in China provides evidence that modern birds evolved their short, feathered tails from the long, bony tails of their dinosaur ancestors through a gradual, step-by-step process. This finding challenges the previous belief that the transition was a sudden evolutionary leap. Researchers published their findings in the journal Science Advances on July 1. The development of a shorter tail was a crucial adaptation for birds, enabling their survival as the only dinosaur lineage to persist after a mass extinction event 66 million years ago. This evolutionary change is considered one of the most significant morphological shifts in the history of terrestrial vertebrates.