Stratum.black
Diplodocus — Diplodocus
Diplodocus — Fred Wierum, Wikimedia Commons, CC BY SA 4.0

Dinosaur

Diplodocus

Double beam

Diplodocus is the long, whip-tailed sauropod of the Morrison Formation, up to 26 m long. Its pencil-like peg teeth with a worn bevel are distinctive and sold from private Wyoming quarries; tail vertebrae and chevrons are the common bones. Diplodocid teeth are often labelled Diplodocus even when they could be Apatosaurus or Barosaurus.

PhylumChordata
ClassReptilia
OrderSaurischia
FamilyDiplodocidae
GroupDinosaur
Rank (PBDB)genus· Paleobiology Database
AuthorMarsh 1878· Paleobiology Database
Classification (PBDB)Chordata › Saurischia › NO_ORDER_SPECIFIED › Diplodocidae· Paleobiology Database
Range (PBDB)158–143 Ma· Paleobiology Database
PBDB occurrences66· Paleobiology Database

Photographs

Diplodocus — Diplodocus carnegii Hatcher, 1901, NON-TYPE (NHMUK PV R 8642)
Diplodocus carnegii Hatcher, 1901, NON-TYPE (NHMUK PV R 8642) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0
Diplodocus — Diplodocus carnegii Hatcher, 1901 (NHMUK PV R 8642 $Cast)
Diplodocus carnegii Hatcher, 1901 (NHMUK PV R 8642 $Cast) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0
Diplodocus — Diplodocus Marsh, 1878, Figured (NHMUK PV R 8924)
Diplodocus Marsh, 1878, Figured (NHMUK PV R 8924) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0

Age

Formations

Elsewhere

Cite this article

Stratum Study. "Diplodocus" (Taxon). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/taxa/diplodocus. Accessed 2026-09-20.

BibTeX · CSL-JSON

@misc{stratum-diplodocus,
  title        = {Diplodocus},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/taxa/diplodocus}},
  year         = {2026},
  note         = {Taxon article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, pbdb, wikidata, commons, nhm. Accessed 2026-09-20.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.