Stegosaurus Dinosaur Vertebra

The Hesperosaurus mjosi was a species of stegosaurid dinosaur that lived during the Late Jurassic period, approximately 156 to 145 million years ago. This dinosaur was discovered in the Morrison Formation, a sedimentary rock sequence in the Western United States known for its rich array of dinosaur fossils. The Hesperosaurus is distinguished by its distinctive array of bony plates and spikes along its back and tail, a characteristic feature of stegosaurids.

The specific name "mjosi" honors the paleontologist who contributed significantly to its discovery and study. The Hesperosaurus is a significant find as it adds to the understanding of the diversity and distribution of stegosaurids in the Jurassic period.

Hesperosaurus mjiosi

Jurassic

Big Horn County, WY

Morrison Formation -- Salt Marsh Member

7.15"h x2.1w"x4"