They Called It a Dinosaur. The Bones Say Bird.

This video looks at Anchiornis and Jianianhualong, two bird-like troodontids frequently cited in discussions of dinosaur-to-bird evolution. Rather than focusing on their feathers, which tend to get most of the attention, the video argues that the real story is in the skeleton — new evidence from the bones raises the question of whether these animals are better understood as dinosaurs or as birds.

The video breaks down the anatomy behind that classification problem and considers why these fossils may force a rethink of where the boundary actually falls between birds and dinosaurs — closing with the open question of whether the “dinosaur” label was wrong for these animals from the start.

Watch on YouTube.