AnchisauriaApatosaurinaeDinosauriaDiplodocidaeDiplodocimorphaDiplodocoideaEusaurischiaEusauropodaFlagellicaudataGravisauriaLate JurassicMassopodaNeosauropodaNorth AmericaPlateosauriaSaurischiaSauropodaSauropodiformesSauropodomorpha

Apatosaurus louisae

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Dinosaur: Apatosaurus louisae

Jurassic: 154.8–145 Ma
Type: Sauropod

Length*:22.5 m73.8 ft
Weight*:20 t44,092 lb
Speed:17 km/h11 mph
ESR: 4 / 4 (estimated size reliability)
*The largest known specimen



Locations


Sources

Material: At least four specimens (one almost complete skeleton).
References: Tschopp, E., Mateus, O. & Benson, R.B.J. (2015) "A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda)".

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