Classification: Saurischia. Sauropodmorpha. Sauropoda. Diplodocidae
Genus: Diplodocus (“Double Beam”)
Species: D. carnegii, D. hallorum
Though it shared its habitat with meat-eating dinosaurs such as Allosaurus and Ceratosaurus, its massive size probably deterred predators from attacking a full-grown Diplodocus. They may have preyed upon younger or sicker individuals.
Diplodocus was a plant-eater, with teeth uniquely suited for stripping tree branches of their vegetation.
Diplodocus lived in what is now the western United States, during the Late Jurassic Period, around 150 million years ago. This time period and area was home to a remarkable amount of giant long-necked dinosaurs. In addition to Diplodocus, the area was also featured Apatosaurus, Brachiosaurus, Camarasaurus, and more.
Diplodocus had a typical sauropod body type, with a long neck, a long and whip-like tail, thick trunk-like legs, and a small head.
Their front legs were shorter than their back legs, leading to a posture where their neck stuck out long in front of their bodies, unlike sauropods such as Brachiosaurus, which had longer front legs than rear legs and held its neck high in the air.
Diplodocus was very long, with estimates placing its total length at well over 100 feet.
The earliest Diplodocus remains were discovered in Colorado in 1877. It was named by early paleontologist Othniel Charles Marsh. He called it Diplodocus longus, though D. longus is no longer considered a valid species.
Much more well-preserved specimens were found in 1899, as paleontologists competed to find large sauropod specimens to mount in museums during what became known as “the Bone Wars”.