Diplodocus longus
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Diplodocus Temporal range: Late Jurassic, 154–152 Ma |
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| Mounted D. carnegii holotype skeleton at the Carnegie Museum of Natural History. | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | Saurischia |
| Suborder: | †Sauropodomorpha |
| Clade: | †Neosauropoda |
| Family: | †Diplodocidae |
| Subfamily: | †Diplodocinae |
| Genus: |
†Diplodocus Marsh, 1878 |
| Type species | |
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†Diplodocus longus nomen dubium Marsh, 1878 |
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| Other Species | |
| Synonyms | |
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Seismosaurus Gillette, 1991 |
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Seismosaurus Gillette, 1991
Diplodocus (/dɪˈplɒdəkəs/,/daɪˈplɒdəkəs/, or /ˌdɪploʊˈdoʊkəs/) is an extinct genus of diplodocid sauropod dinosaurs 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 διπλός (diplos) "double" and δοκός (dokos) "beam", in reference to its double-beamed chevron bones located in the underside of the tail. Chevron bones of this particular form were initially believed to be unique to Diplodocus; however, since then they have been discovered in other members of the diplodocid family as well as in nondiplodocid sauropods, such as Mamenchisaurus. It is now common scientific opinion that Seismosaurus hallorum is a species of Diplodocus.
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