a herbivorous diplodocine sauropod dinosaur from the Late Jurassic of North America.
South Dakota, USA
is derived from the Greek "barys" (heavy) and "sauros" (lizard) because of its large size. The species epithet
, means "slow" in Latin.
The first remains of Barosaurus
were discovered in the Morrison Formation of South Dakota, USA, by Ms. E.R. Ellerman and were excavated by John Bell Hatcher of Yale University in 1889.
(YPM 429) consists of six tail vertebrae,
but further vertebrae, ribs and limb bones from the same specimen—left in the ground and under the watchful eye of the landowners—were removed by George Reber Wieland nine years later. The most complete specimen of Barosaurus
was excavated from the Carnegie Quarry at Dinosaur National Monument in 1923 by Earl Douglass, but its remains were spread across the University of Utah, Washington's National Museum of Natural History, and the Carnegie Museum in Pittsburgh, until Barnum Brown had them all shipped to New York City's American Museum of Natural History in 1929.
: Late Jurassic
: 156-145 mya
Est. max. length
: 26 meters
Est. max. hip height
Est. max. weight
: 20 tons
• Foster, John R. (1996) "Sauropod dinosaurs of the Morrison Formation (Upper Jurassic), Black Hills, South Dakota and Wyoming".
McIntosh, John S. (2005) "The genus Barosaurus
Marsh" in Carpenter and Tidswell (eds.) "Thunder Lizards: The Sauropodomorph Dinosaurs
• Lovelace, David M., Hartman, Scott A. and Wahl, William R. (2007) "Morphology of a specimen of Supersaurus (Dinosauria, Sauropoda) from the Morrison Formation of Wyoming, and a re-evaluation of diplodocid phylogeny
• Maier, G. (2003) "African Dinosaurs Unearthed: The Tendaguru Expeditions
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