Brontosaurus is a genus of gigantic quadruped sauropod dinosaurs. Although the type species, B. excelsus, had long been considered a species of the closely related Apatosaurus, researchers proposed in
Lived: 157.3 million years ago - 145 million years ago (Kimmeridgian - Tithonian)
Speed: 12 – 19 mph
Scientific name: Brontosaurus (Thunder lizard)
Family: †Diplodocidae
Fossils: YPM 1980, TATE-001, BYU 1252-18531, YPM 1981
Did you know: An extensive study published in 2015 concluded that Brontosaurus was a valid genus of sauropod distinct from Apatosaurus.
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North American Dinosaurs
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