Diplodocus

“double beam”

CLASSIFICATION

Diplodocus  Marsh, 1878TYPE SPECIES: D. longus Marsh, 1878 “long double beam” OTHER SPECIES: D. carnegiei Hatcher, 1901 “Andrew  Carnegie’s double beam” D. hayi Holland, 1924 MISASSIGNED SPECIES: D. hallorum == Seismosaurus hallorum D. lacustris Marsh, 1884 [nomen dubium?] “lakeside double beam” == D. longus D. reedi Breihaupt, 1990 == D. carnegiei

Animalia Vertebrata Tetrapoda Sauropsida Archosauromorpha Ornithodira Dinosauria Sauropodomorpha

see also: Genus Index, Classification

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MEASUREMENTS

LENGTH: 27 m

see also: World Records

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TIME

Kimmeridgian to Tithonian

see also: Ages of the Mesozoic

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PLACE

Colorado, Utah, Wyoming

see also: Paleo-Maps

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REMAINS

• D.longus
• D.carnegiei
  • 5 skeletons, 2 skulls, elements
• D.hayi
  • partial postcranium with braincase
• D.lacustris

see also: Anatomy

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ESSAY

Once known as the longest dinosaur (although others have now replaced it). A recent find with skin impressions show a row of spines going down the back. Other sauropods may have shared this trait.

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IMAGES

Click on thumbnail to see full image.

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