OrnithischiaSaurolophinaeEdmontosaurus

Edmontosaurus annectens

Edmontosaurus annectens skeletal reconstruction, left lateral view, reconstructed length ~12 m.
Scale bar = 1 meter
Taxon
Edmontosaurus annectens (Marsh, 1892)
Reconstructed length
~12 m (39 feet)
View
Left lateral
Drawing
© Scott Hartman
Drawn
2016, revised 2025
Clade
  1. Ornithischia
  2. Neornithischia
  3. Ornithopoda
  4. Iguanodontia
  5. Hadrosauridae
  6. Saurolophinae

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Edmontosaurus was a large hadrosaurid of the latest Cretaceous of western North America, reaching about 12 meters (39 feet) long. Although it lacked a bony crest, it may have had a soft-tissue crest on top of its head, similar to that found in Edmontosaurus regalis. With several “mummified” specimens covered in skin impressions, Edmontosaurus annectens is scientifically among the best-known dinosaurs, with some specimens even preserving the keratinous beak tissue.

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