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Temporal range: Late Triassic
Shuvosaurus BW.jpg
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Suchia
Clade: Paracrocodylomorpha
Branch: Poposauroidea
Family: Shuvosauridae
Genus: Shuvosaurus
Chatterjee, 1993
  • S. inexpectatus Chatterjee, 1993 (type)

Chatterjeea Long & Murry, 1995
Chatterjeea elegans

Restored head

Shuvosaurus (meaning "Shuvo's lizard") is a genus of beaked reptile from the Late Triassic of Texas. It was described by Sankar Chatterjee in 1993 after it was discovered by his son Shuvo.[1][2] It was initially interpreted as a Triassic member of the Cretaceous dinosaur family Ornithomimidae. However, the recent discovery of the related Effigia from Ghost Ranch shows that Shuvosaurus is more closely related to crocodilians, and that similarities between this animal and ornithomimids result from convergent evolution.[3] Additionally, this discovery demonstrated that the taxon Chatterjeea was synonymous with Shuvosaurus.[4]


  1. ^ Chatterjee, S. (1991) An unusual toothless archosaur from the Triassic of Texas: the world's oldest ostrich dinosaur? Abstract, Journal of Vertebrate Paleontology, 8(3): 11A.
  2. ^ Chatterjee, S. (1993). "Shuvosaurus, a new theropod: an unusual theropod dinosaur from the Triassic of Texas". National Geographic Research and Exploration. 9 (3): 274–285. 
  3. ^ Rauhut, O. W. M. (1997). "On the cranial anatomy of Shuvosaurus inexpectatus (Dinosauria: Theropoda)." In: Sachs, S., Rauhut, O. W. M. & Weigert, A. (eds) 1. Treffen der deutschsprachigen Palaeoherpetologen, Düsseldorf, 21.-23.02.1997; Extended Abstracts. Terra Nostra 7/97, pp. 17-21.
  4. ^ Nesbitt, S. (2007). "The anatomy of Effigia okeeffeae (Archosauria, Suchia), theropod-like convergence, and the distribution of related taxa." Bulletin of the American Museum of Natural History, 302: 84 pp.