Barosaurus bæroh-SƆːRUHS

"heavy"

Generic sauropod body-plan outline
You 1.8 m (5.9 ft) tall
Barosaurus 45 m (148 ft) long
as long as 26 people standing fingertip to fingertip
generic sauropod body plan, scaled to length — not a silhouette of Barosaurus
Length
45 m (148 ft)
Period
Late Jurassic (152–150 Mya)
Place
Mexico · Montana, USA · Wyoming, USA · South Dakota, USA
Food
Herbivore
Clade
Diplodocidae Dinosauria Saurischia Sauropodomorpha Sauropoda Whip-tailed sauropods: Diplodocus, Apatosaurus, Brontosaurus.

Barosaurus ( ) is an extinct genus of giant, long-tailed, long-necked, plant-eating sauropod dinosaur closely related to the more familiar Diplodocus. Definitive remains have been found in the Morrison Formation from the Upper Jurassic Period of South Dakota, Utah and Montana, with other possible remains also found in Colorado, eastern Wyoming and Oklahoma. The generic name, Barosaurus, comes from the Greek words barys (βαρυς) meaning “heavy” and sauros (σαυρος) meaning “lizard”, and thus meaning “heavy lizard”.

What we know

  • Named by Marsh, 1890.
  • Body length estimated at about 45 m.
  • Fossils found in Mexico and Montana, USA.

What we guess

The reconstruction notes for Barosaurus — soft tissue, color, behavior — haven't been written up yet. Only the recorded basics above are filled in so far.