Named By: Sankar Chatterjee - 1993.
Synonyms: Chatterjeea elegans.
Classification: Chordata, Reptilia, Archosauria, Crurotarsi, Pseudosuchia, Suchia, Rauisuchia, Paracrocodylomorpha, Poposauroidea, Shuvosauridae.
Species: S. inexpectatus (type).
Size: Up to 2 meters long.
Known locations: USA, Arizona, New Mexico and Texas.
Time period: Norian of the Triassic.
Fossil representation: Remains of several individuals, though usually incomplete.
was described from the discovery of a skull that had no teeth but a
well-developed beak-like anterior portion. Because of this,
Shuvosaurus was at the time considered to possibly
be an ancient
ancestor to the ornithomimosaurs,
a group of dinosaurs that at the
time of writing are only known from Cretaceous era fossil deposits.
Later study, particularly the description of the genus Effigia
2006, has now yielded the conclusion that Shuvosaurus
actually a dinosaur, but a form of rauisuchian. Because the mouth
is beaked and toothless, it is difficult to establish what kind of
diet Shuvosaurus head, since a beaked mouth could
be used for either
a carnivorous or herbivorous diet, possibly even both.
Sankar Chatterjee named Shuvosaurus after his son, who was also the person to discover the Shuvosaurus holotype. The species name ‘inexpectatus' is a reflection of the unexpected nature of the find. Another genus named by Chatterjee, Chatterjeea, is now considered a synonym to Shuvosaurus, and hence material once labelled as Chatterjeea is now referred to as Shuvosaurus. Additionally, the vertebrae once attributed to the Gojirasaurus holotype, are now regarded as belonging to Shuvosaurus.
- An unusual toothless archosaur from the Triassic of Texas: the world's oldest ostrich dinosaur?, Sankar Chatterjee - 1991.
- Shuvosaurus, a new theropod: an unusual theropod dinosaur from the Triassic of Texas, Sankar Chatterjee - 1993.
- The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod-like convergence, and the distribution of related taxa, S. Nesbitt - 2007.