The video explores the evolution of feathers, starting with the debate on whether T. Rex had feathers. It explains that feathers evolved from keratin-based structures and describes their anatomy. The discovery of feathered dinosaur fossils in the 1990s suggests that many dinosaurs had feathers. The video also discusses the possibility that pterosaurs developed feathers before dinosaurs, indicating that feathers may have originated around 250 million years ago. Despite having feathers, dinosaurs remained fearsome predators.

When did dinosaurs likely start growing feathers?

What might have developed feathers earlier than dinosaurs?