Marshosaurus
| Marshosaurus Temporal range: Late Jurassic,  | |
|---|---|
| Skull cast | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Clade: | Dinosauria | 
| Clade: | Saurischia | 
| Clade: | Theropoda | 
| Family: | †Piatnitzkysauridae | 
| Genus: | †Marshosaurus Madsen, 1976 | 
| Species: | †M. bicentesimus | 
| Binomial name | |
| †Marshosaurus bicentesimus Madsen, 1976 | |
Marshosaurus is a genus of medium-sized carnivorous theropod dinosaur, belonging to the family Piatnitzkysauridae, from the Late Jurassic Morrison Formation of Utah and possibly Colorado.