Edmontosaurus
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Edmontosaurus Temporal range: Late Cretaceous, 73–66 Ma |
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| Mounted cast of a fossil E. annectens skeleton, Oxford University Museum of Natural History | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | †Ornithischia |
| Suborder: | †Ornithopoda |
| Family: | †Hadrosauridae |
| Subfamily: | †Saurolophinae |
| Tribe: | †Edmontosaurini |
| Genus: |
†Edmontosaurus Lambe, 1917 |
| Type species | |
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†Edmontosaurus regalis Lambe, 1917 |
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| Other Species | |
| Synonyms | |
Edmontosaurus (/ɛdˌmɒntəˈsɔːrəs/ ed-MON-tə-SAWR-əs) is a genus of hadrosaurid (duck-billed) dinosaur. It contains two known species: Edmontosaurus regalis and Edmontosaurus annectens. Fossils of E. regalis have been found in rocks of western North America that date from the late Campanian stage of the Cretaceous Period 73 million years ago, while those of E. annectens were found in the same geographic region but in rocks dated to the end of the Maastrichtian stage of the Cretaceous, 66 million years ago. Edmontosaurus was one of the last non-avian dinosaurs, and lived alongside dinosaurs like Triceratops and Tyrannosaurus shortly before the Cretaceous–Paleogene extinction event.
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