- Jurassic Age
- Morrison Formation
- Dana Quarry, Wyoming
- Specimen measures approx. 1″ long and comes in the 4.25″ X 5.25″ Riker Mount with Label as Shown. While this may not be the prettiest tooth.. it is certainly one of the RAREST THEROPOD teeth from the Morrison Formation!
Marshosaurus is a genus of medium-sized carnivorous theropod dinosaur, belonging to the Megalosauroidea, from the Late Jurassic Morrison Formation of Utah and perhaps Colorado.
During the 1960s, over fourteen thousand fossil bones were uncovered at the Cleveland-Lloyd Quarry in central Utah. The majority of these belonged to Allosaurus but some were of at least two theropods new to science. In 1974 one of these was named by James Henry Madsen Jr. as the genus Stokesosaurus.
In 1976 the second was by Madsen named as the type species Marshosaurus bicentesimus. The generic name honoured the nineteenth century paleontologist Professor Othniel Charles Marsh, who described many dinosaur fossils during the Bone Wars. The specific name was chosen “in honor of the bicentennial of the United States of America”