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Period of life:
157-3-145 MYA
North America
Apatosaurus Dino Pet
Main information
Interesting facts
Apatosaurus is a massive Late Jurassic sauropod found in 1877 in the Morrison Formation in the Western United States. The name of the genus means "deceptive lizard", and, according to scientists, the skeleton of this herbivorous giant reached up to 15 meters in length: it was a large quadrupedal animal with a long neck and a long whip-like tail. Its forelimbs were slightly shorter than its hind limbs. The neck vertebrae of Apatosaurus were of medium length and fairly strong, while the leg bones were strong and stocky. The tail kept the sauropods above the ground when moving. Like other diplodocids, its tail may have been used as a whip to make loud noises or, more recently, as a sensory organ. Apatosaurus had one claw on each forelimb and three on each hind. To lighten the vertebrae, the animal's large neck was filled with an extensive system of air sacs. This allowed Apatosaurus to keep its head held high as it fed on the foliage of prehistoric trees.