Duckbill Dinosaur (cast)

Smithsonian National Museum of Natural History

Smithsonian National Museum of Natural History

Cows of the Cretaceous
Edmontosaurus and other duck-billed hadrosaurs lived on plants—lots of them. Sturdy front legs with hooves helped them move on all fours as they cropped low-growing vegetation with their horny beaks. Fossil footprints show they also walked on hind legs to snap off higher leaves and branches.

Edmontosaurus, one of the last and largest ornithopods, weighed up to 13,000 lbs. (6,000 kg)—the result of an evolutionary trend toward bigger bodies.

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  • Title: Duckbill Dinosaur (cast)
  • Location: Lance Formation, Niobrara County, Wyoming, United States
  • Physical Dimensions: L: 681 cm W: 71 cm H: 382 cm
  • Type: Fossil
  • Rights: This image was obtained from the Smithsonian Institution. The image or its contents may be protected by international copyright laws. http://www.si.edu/termsofuse
  • External Link: View this object record in the Smithsonian Institution Collections Search Center
  • Weight: 400 kg (approximate out of matrix)
  • USNM Catalog Number(s): V2414, V2414
  • Scientific Name: <i>Edmontosaurus annectens</i>
  • Photo Credit: Smithsonian Institution National Museum of Natural History
  • Historic Period: Lived 68–66 million years ago
  • Geologic Age: Mesozoic - Cretaceous - Upper/Late - Maastrichtian
  • Field: Paleobiology
  • Date Collected: 1891-09

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