Study Aims to Shake Up Dinosaur Family Tree
Hips don’t lie. Almost 130 years of evolutionary consensus is being re-examined after a new study suggested that the longstanding division of dinosaurs into “bird-hipped” and “lizard-hipped” groups may no longer be valid. The Cambridge study upends conventional thought by suggesting bipedal, carnivorous lizard-hipped dinos like Tyrannosaurus rex actually belong to the bird-hipped lineage of the family tree. Moreover, it suggests that the first dinosaurs emerged millions of years earlier than previously thought, and in the Northern Hemisphere instead of the southern supercontinent of Gondwana.