Our Allosaurus Fragilis skull. - Public domain natural history illustration

This is a skull of an Allosaurus Fragilis, one of the prevalent meat eaters found in the Morrison Formation during the Late Jurassic period, about 150 million years ago. The Allosaurus was our second largest predator dinosaur, but probably was the most prolific, and one of the better hunters. This skull was found in one piece, with only minor distortion by the University of Utah groups working on the wall. It was probably discovered in 1925.

carnegie exhibit hall dinosaur national monument utah fragiilis skull original allosaurus articulated dino allosaurus fragilis skull one piece allosaurus fragilis meat eaters morrison formation jurassic period million years predator dinosaur utah groups national parks gallery ultra high resolution high resolution jensen paleontology natural history

1925

National Parks Gallery

https://npgallery.nps.gov/

Public Domain Dedication