Protognathosaurus

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Protognathosaurus
Fossil range: Middle Jurassic
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
Family: Euhelopodidae
Genus: Protognathosaurus
Olshevsky, 1991
Species
  • P. oxyodon (Zhang, 1988 [originally Protognathus oxyodon]) (type)

Protognathosaurus (meaning "early jaw lizard") is a genus of dinosaur from the Middle Jurassic. It was a sauropod found in what is present-day China. The type species, P. oxyodon, was originally described by Zhang (1988) (as Protognathus, which was already in use), and was renamed by George Olshevsky in 1991. Protognathosaurus is known only from a fragmentary jaw.

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