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

Dinosaur

Stegosaurus

Roofed lizard

Stegosaurus is the plated dinosaur of the Morrison Formation and Colorado's state fossil. Its tiny leaf-shaped teeth are rare and hard to identify; the collectible pieces are plate fragments, tail spikes and vertebrae from private quarries. Plates and spikes are frequently restored, so ask what proportion is original bone.

PhylumChordata
ClassReptilia
OrderOrnithischia
FamilyStegosauridae
GroupDinosaur
Rank (PBDB)genus· Paleobiology Database
AuthorMarsh 1877· Paleobiology Database
Classification (PBDB)Chordata › Ornithischia › NO_ORDER_SPECIFIED › Stegosauridae· Paleobiology Database
Range (PBDB)162–93.9 Ma· Paleobiology Database
PBDB occurrences86· Paleobiology Database

Photographs

Stegosaurus — Stegosaurus stenops Marsh, 1887
Stegosaurus stenops Marsh, 1887 — Smithsonian Institution (NMNHPALEO), Smithsonian Open Access, CC0
Stegosaurus — Stegosaurus stenops Marsh, 1887, NON-TYPE (NHMUK PV R 36730)
Stegosaurus stenops Marsh, 1887, NON-TYPE (NHMUK PV R 36730) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0
Stegosaurus — Stegosaurus Marsh, 1877 (NHMUK PV R 6336)
Stegosaurus Marsh, 1877 (NHMUK PV R 6336) — © 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. "Stegosaurus" (Taxon). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/taxa/stegosaurus. Accessed 2026-09-20.

BibTeX · CSL-JSON

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

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