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Diplodocus (dip-low-doe-cus) is a genus of large Sauropod that lived in North America during the Late Jurassic.


The largest species, D. hallorum, could exceed 36 meters in length. It would probably be around 4.5-6.4 meters at the shoulder, but its total height could be much more when it held its head fully erect. Diplodocus is known for its extremely long tail, containing around 80 vertebrae. The tail of D. hallorum could exceed 18 meters in length.

The living creature[]

Diplodocus was probably a medium-level browser, which would have prevented competition with shorter Stegosaurs and taller Sauropods. Adult Diplodocus might have been too large for predators such as Allosaurus. However, carnivores like Allosaurus could probably pose a threat to younger individuals.


Diplodocus is one of the most iconic dinosaurs. For a long time, it was the longest Sauropod known from reasonably complete material. It is also the type genus of the family Diplodocidae, the family that contains many other significant genera such as Apatosaurus and Brontosaurus.