Outline: a typical theropod

Morrison Fm., ColoradoNamed 1974

Stokesosaurus

"Stokes's lizard"

Type species Stokesosaurus clevelandi

Lived
152 to 143 million years ago, Late Jurassic to Early Cretaceous
Diet
Carnivore
Group
Theropods
Found in
United States
Named by
Madsen 1974

Where its fossils were found

The evidence

Today

2 finds

150 million years ago

Map: C. R. Scotese, PALEOMAP

Field notes

About Stokesosaurus

What it was like

Stokesosaurus was a small, early relative of Tyrannosaurus, known mostly from hip bones. It ran on two legs and was far smaller than its later relatives.

Its world

It lived in the Late Jurassic, in what are now Colorado and Utah. Its fossils come from the Morrison Formation, where it lived in the shadow of bigger hunters such as Allosaurus and Ceratosaurus, among giant plant eaters like Diplodocus and Stegosaurus.

How it was found

Madsen named Stokesosaurus in 1974. The type species is Stokesosaurus clevelandi. Two finds are known.

Lived alongside

Found in the same rock formations

Close relatives

Other members of Tyrannosauroidea

Sources: WikidataNamed in: J. H. Madsen. 1974. A new theropod dinosaur from the Upper Jurassic of Utah. Journal of Paleontology 48(1):27-31