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Temporal range: Middle Jurassic
Proceratosaurus skull.png
Scientific classification
Kingdom: Animalia
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Theropoda
Infraorder: Coelurosauria
Superfamily: Tyrannosauroidea
Family: Proceratosauridae
Genus: Proceratosaurus

Proceratosaurus was a small dinosaur from the Middle Jurassic, about 165 million years ago. It was found in Gloucestershire, England, in 1910. It was a carnivorous theropod.

Proceratosaurus was first believed to be an early ancestor of Ceratosaurus,[1] but it was actually an ancestor of the coelurosaurs. Thus, it was an early ancestor of Tyrannosaurus and its relatives in the Upper Cretaceous.[2][3][4]

The animal in life was about 3m long and weighed up to 60kg.[3]

References[change | change source]

  1. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 114. ISBN 1-84028-152-9.
  2. Holtz, Thomas 1998. A new phylogeny of the carnivorous dinosaurs. Gaia 15: 5–61.
  3. 3.0 3.1 Oldest T. rex relative identified". BBC News. 2009. [1]
  4. Rauhut O.W.M; Milner A.C. and Moore-Fay S. 2010. Cranial osteology and phylogenetic position of the theropod dinosaur Proceratosaurus bradleyi (Woodward, 1910) from the Middle Jurassic of England. Zoological Journal of the Linnean Society. [2]