Palaeontologist Julia clark says birds are the direct descendants of dinosaurs. This is something we've known for a while, just from looking at the bones. But then 30 years ago, scientists made this huge discovery that showed that dinosaurs probably looked like birds on the outside. On these dinosaurs that we previously related based on their bones, two living birds, we find pinnate feathers that are uniquely known in living bird of all the animals out there. So i talked to another palaeontologist, julia clark, and she told me that birds cended from one particular group of dinosaurs called therapods, which include dinosaurs like tires.