Parasaurolophus Temporal range: Late Cretaceous, 76.5–74.5 Ma |
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P. cyrtocristatus skeletal mount at the Field Museum of Natural History. | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Clade: | Dinosauria |
Order: | †Ornithischia |
Suborder: | †Ornithopoda |
Family: | †Hadrosauridae |
Tribe: | †Parasaurolophini |
Genus: |
†Parasaurolophus Parks, 1922 |
Type species | |
†Parasaurolophus walkeri Parks, 1922 |
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Species | |
†P. walkeri Parks, 1922 |
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Synonyms | |
and see text. |
†P. walkeri Parks, 1922
†P. tubicen Wiman, 1931
†P. cyrtocristatus Ostrom, 1961
and see text.
and see text.
Parasaurolophus (/ˌpærəsɔːˈrɒləfəs/ PARR-ə-saw-ROL-ə-fəs or /ˌpærəˌsɔːrəˈloʊfəs/ PARR-ə- SAWR-ə-LOH-fəs; meaning "near crested lizard" in reference to Saurolophus) is a genus of ornithopod dinosaur that lived in what is now North America during the Late Cretaceous Period, about 76.5–74.5 million years ago. It was a herbivore that walked both as a biped and a quadruped. Three species are recognized: P. walkeri (the type species), P. tubicen, and the short-crested P. cyrtocristatus. Remains are known from Alberta (Canada), and New Mexico and Utah (United States). The genus was first described in 1922 by William Parks from a skull and partial skeleton found in Alberta.