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Rm apatosaurus jpg.jpg
Scientific classification
Kingdom Information
Kingdom Animalia
Phylum Information
Phylum Chordata
Class Information
Class Sauropsida
Order Information
Superorder Dinosauria
Order Saurischia
Sub-order Sauropodomorpha
Infraorder Sauropoda
Family Information
Family Diplodocidae
Genus Information
Genus Apatosaurus
Species Information
Species A. ajax
A. excelsus
A. louisae
Synonyms Brontosaurus
Population statistics
Conservation status Extinct

Apatosaurus (Greek: ἀπατηλός apatelos, and σαῦρος sauros; "deceptive lizard") refers to three species of dinosaur originally discovered in the 1870s in the western United States.