Rewriting Dinosaur Evolution: Scientists Unearth Remarkable 150-Million-Year-Old Stegosaur Skull

Scientists described the most complete European stegosaur skull ever found in Spain, identified as Dacentrurus armatus.

The rare Late Jurassic fossil adds a new skull detail and helps reconstruct stegosaur head anatomy.

Researchers also proposed a new group, Neostegosauria, and revised relationships among stegosaurs worldwide.

The find strengthens understanding of stegosaur evolution and their biogeographic history.