Apatosaurus went by the name Brotosaurus for almost half a century before its name was officially changed in 1903.

The thick-limbed and heavy-bodied Apatosaurus shares many features with the light-weight Diplodocus - including short forelimbs with a back that slopes up from the shoulders to the hips, sled-like bones in the tail, and a long whip-like tip to the tail.

Dino Facts

  • Pronounced: ap-at-owe-sore-uss
  • Means: Deceptive lizard
  • Size: 82 ft (25 m)
  • Where: North America
  • When: Late Jurassic
  • Diet: Herbivorous