Eobrontosaurus

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iEobrontosaurus
Fossil range: Late Jurassic
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
Family: Diplodocidae
Genus: Eobrontosaurus
Binomial name
Eobrontosaurus yahnahpin
Bakker, 1998

Eobrontosaurus ("dawn thunder lizard") is the name given to a genus of dinosaur from the Late Jurassic of North America. It was a sauropod closely related to Apatosaurus.

The type species, E. yahnahpin, was described by Filla and Redman (1994) as a species of Apatosaurus ("A. yahnahpin"), but re-evaluation by Bakker in 1998 found it to be more primitive, and so Bakker coined the new generic name Eobrontosaurus.

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