Proceratosaurus
Proceratosaurus lived in the Middle Jurassic 166 million years ago. Proceratosaurus was thought to be a Ceratosaurus ancestor, however it was a coelurosaur ancestor. So, it was a Tyrannosaurus ancestor in the Upper Cretaceous.
Proceratosaurus lived in the Middle Jurassic 166 million years ago. Proceratosaurus was thought to be a Ceratosaurus ancestor, however it was a coelurosaur ancestor. So, it was a Tyrannosaurus ancestor in the Upper Cretaceous.
