Allosaurus fragilis Posters and Art Prints

First described in 1877 at the height of the “Bone Wars” by Othneil Charles Marsh, Allosaurus was one of the most successful and wide spread predators of the Late Jurassic Period (approximately 155-150 million years ago) with most of it’s remains being found the Morrison Formation in Western North America and related specimens having been found as far away as Portugal, and possibly as far off as Tanzania. Allosaurus was named from the Greek for “different lizard” because of a trait found in the central parts of it’s vertebrae which had a concave cup-like shape on the back end of it’s surface.