Diplodocus was one of the longest animals to have lived on Earth and may have reached over 30 metres and weighed around 15 tonnes. The quantity of plant material eaten by roaming herds of this massive herbivore is unimaginable. Once the most famous dinosaur in the world, Diplodocus had four large sturdy legs supporting a long neck and a long tail that could be flailed around like a whip. Several different species have been described since the first Diplodocus discovery was made in North America in 1877. They lived there about 150 million years ago during the late Jurassic period.
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Dinosaur diet
What did herbivorous dinosaurs eat and how did they digest it?
What did herbivorous dinosaurs eat and how did they digest it?
Animating the past
Modern elephants stand in for Diplodocus to help animators make their moves.
Modern elephants stand in for Diplodocus to help animators make their moves.
Diplodocus diet
Peg-like teeth and a huge gut help digest the tough Jurassic vegetation.
Peg-like teeth and a huge gut help digest the tough Jurassic vegetation.
Great grazers
The Titans of the Jurassic keep the fern-filled prairies clear.
The Titans of the Jurassic keep the fern-filled prairies clear.
Sauropodlets in peril
Newly hatched Diplodocus chicks are an extra treat for an Ornitholestes.
Newly hatched Diplodocus chicks are an extra treat for an Ornitholestes.
A comparison of the mighty Diplodocus's size in relation to humans.
Discover what these behaviours are and how different plants and animals use them.
Additional data source: Animal Diversity Web
Discover the other animals and plants that lived during the following geological time periods.
Jurassic periodDiplodocus (pron.: /dɪˈplɒdəkəs/,/daɪˈplɒdəkəs/, or /ˌdɪploʊˈdoʊkəs/) is an extinct genus of diplodocid sauropod dinosaur whose fossils were first discovered in 1877 by S. W. Williston. The generic name, coined by Othniel Charles Marsh in 1878, is a Neo-Latin term derived from Greek διπλόος (diploos) "double" and δοκός (dokos) "beam", in reference to its double-beamed chevron bones located in the underside of the tail. These bones were initially believed to be unique to Diplodocus; however, they have since then been discovered in other members of the diplodocid family and in non-diplodocid sauropods such as Mamenchisaurus.
It lived in what is now western North America at the end of the Jurassic Period. Diplodocus is one of the more common dinosaur fossils found in the Upper Morrison Formation, a sequence of shallow marine and alluvial sediments deposited about 155 to 148 million years ago, in what is now termed the Kimmeridgian and Tithonian stages (Diplodocus itself ranged from about 154 to 150 million years ago). The Morrison Formation records an environment and time dominated by gigantic sauropod dinosaurs such as Camarasaurus, Barosaurus, Apatosaurus and Brachiosaurus.
Diplodocus is among the most easily identifiable dinosaurs, with its classic dinosaur shape, long neck and tail and four sturdy legs. For many years, it was the longest dinosaur known. Its great size may have been a deterrent to the predators Allosaurus and Ceratosaurus: their remains have been found in the same strata, which suggests they coexisted with Diplodocus.
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