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Diplodocus is a very famous giant Jurassic plant-eater. It was a huge, long-necked dinosaur, reaching lengths of up to 30 meters (100 feet) long. In fact, it is the longest complete dinosaur skeleton ever discovered. Since its hind legs were longer than its front legs, Diplodocus probably ate plants that were low to the ground. It was so big, however, that it could push trees over in order to get the leaves at the top down to the ground. It would probably stand on its hind legs to push, but it could not hold that pose for very long, because of the animals great mass.[2]

Diplodocus is the namesake of the diplodocid family - long neck, pillar-like legs, long tapering tail and enormous size. It had, like the other family members, peg-like teeth in an elongated head that seemed very small for such a large creature. There is much speculation about how much these creatures needed to eat and how such a small head could ingest enough food to fuel such a large body. Some scientists have stated that these huge, small-headed creatures would have needed to eat every waking moment in order to provide enough food to keep such a large body alive.[2]

Like many other large sauropods, Diplodocus probably swallowed stones which it kept in a gizzard similar to that found in a chicken to facilitate digesting food. The tough plant fibers would spend time in the gizzard stewing and being ground up by the stones. There is some speculation about the use of the very long tail of Diplodocus and other members of its family. If it was used as a weapon, it would be very deadly. Because of its length, the speed at the tip, if swung forcefully, would have been very high, possibly faster than the speed of sound.[2]

Diplodocus is known from two species, one of which was longer than the other. The longer species was originally classified under its own genus, Seismosaurus, until scientists concluded it was a new species of Diplodocus.

Wikipedia has a more detailed and comprehensive article on Diplodocus


Jurassic Park

Though no living animals of this species make an appearance in the film, a Carnegie model of a Diplodocus can be seen in Alan Grant and Ellie Sattler's trailer when John Hammond comes to request them to come to Jurassic Park.

Jurassic World: Fallen Kingdom

Though no living animals of this species make an appearance in the film, two statue juvenile Diplodocus appear in front of a painting of a herd of adult Diplodocus.[3]

Jurassic Park Adventures: Survivor

Diplodocus was one of the dinosaurs recreated by InGen that went wild on Isla Sorna after the hurricane.

During his stay on the island, Eric Kirby was woken up the head of a hungry Diplodocus breaking through the leaves of the banana tree the boy was sleeping in. Startled by the dinosaur's sudden appearance, Eric fell out of the tree, sliding on the sauropod's back and landing in a pile of its dung. Soon, three more Diplodocus joined the first animal, named Big Momma by Eric. After Eric confirmed the dinosaur's identity, he left the herd and continued his life on the island.

Jurassic Park III: Park Builder

Diplodocus and Seismosaurus (now classified as a species of Diplodocus called Diplodocus hallorum) can be created in Jurassic Park III: Park Builder.

Jurassic Park: Operation Genesis

Diplodocus was planned for the video game Jurassic Park: Operation Genesis but was cut before the game's release, leaving only its name on an in-game file.[4]

Jurassic World: The Game

see Diplodocus/JW: TG

Diplodocus can be created in Jurassic World: The Game. Since June 10, 2015, a Level 40 Diplodocus could be mixed with a Level 40 Ankylosaurus to make the hybrid Ankylodocus.

LEGO Jurassic World

Though it does not physically appear in the game, the species Diplodocus hallorum is mentioned in one of the facts Mr. DNA gives to the player under its old synonym Seismosaurus. In the same fact Mr. DNA says that it was the largest dinosaur ever to exist, even though other dinosaurs, such as Argentinosaurus, have proven to be larger than D. hallorum.

Jurassic World: Evolution

see Diplodocus/JW: E

Diplodocus appears in Jurassic World: Evolution.

Jurassic World: Alive

see Diplodocus/JW: A

Diplodocus is a epic herbivore in Jurassic World: Alive.

Jurassic World: Fallen Kingdom

The Diplodocus appeared in the toyline for Jurassic World: Fallen Kingdom, as part of the line's Mini Dinos assortment. This is the first time it has ever physically appeared in any Jurassic Park toy set.

Behind the scenes

Diplodocus in the Jurassic World storyboard.

In the storyboard for Jurassic World Diplodocus was supposed to be one of the dinosaurs living in the Jurassic World park but was replaced by its relative Apatosaurus in the final film.[5]


  1. 1.0 1.1 1.2 Wikipedia, Diplodocus#Description.
  2. 2.0 2.1 2.2 Jurassic Park Institute, Dinopedia, Diplodocus.
  4. Dinosaurs cut from Jurassic Park: Operation Genesis.
  5. davelowerystoryboards - Jurassic World (July 31, 2015) Retrieved from


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