Pachycephalosaur

Origin

From scientific Latin Pachycephalosaurus.

Full definition of pachycephalosaur

Noun

1. Any of a group of herbivorous dinosaurs, of the genus Pachycephalosaurus from the late Cretaceous period. from 20th c.
• 28 September 2016, David Hone, ‘Three-eyed’ extinct reptile was a bone-headed dinosaur mimic 100 million years early, One could almost call Triopticus a mimic were it not for the fact that it dates to 228-220 million years ago, meaning that it predates the pachycephalosaurs by over 100 million years.