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Parasaurolophus (/ ˌ p ær ə s ɔː ˈ r ɒ l ə f ə s,-ˌ s ɔːr ə ˈ l oʊ f ə s /; meaning "beside crested lizard" in reference to Saurolophus) [2] is a genus of hadrosaurid "duck-billed" dinosaur that lived in what is now western North America and possibly Asia during the Late Cretaceous period, about 76.9–73.5 million years ago. [3]
The holotype skeleton of Parasaurolophus cyrtocristatus: Parasaurolophus tubicen. Parasaurolophus. PMU.R.1250 [168] Paleontologiska Museet, Uppsala Campanian(73.5-73.6 Ma) [167] Kirtland Formation [168] United States [168] Holotype skull (C) of Parasaurolophus tubicen: Parasaurolophus walkeri. Parasaurolophus. ROM 768 [169] Royal Ontario Museum
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Parasaurolophus is a genus of dinosaur that lived in what is now North America during the Late Cretaceous Period, about 75 million years ago. A member of the Hadrosaurid or duck-billed dinosaurs, it was a plant-eater that walked on two legs or all four. Three species are recognized: P. walkeri, P. tubicen, and the short-crested P. cyrtocristatus.
Weishampel and others proposed a node-based definition for the Hadrosauridae: the descendants of the most recent common ancestor shared by Telmatosaurus and Parasaurolophus. [17] They found the hadrosaurs to be a natural group, contrary to Horner's 1990 arguments that the hadrosaur subfamilies were descended from different kinds of iguanodont. [10]
Genus Species Location Stratigraphic position Material Notes Images Anura [8]indeterminate [8]. North Dakota [9]; South Dakota [9]; Middle to upper Hell Creek Formation [10]. 3 unassigned specimens [11]
Parasaurolophus (meaning 'near crested lizard') was a genus of ornithopod dinosaur from the Late Cretaceous Period of what is now North America, about 76-73 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 ...
Parasaurolophus (meaning 'near crested lizard') was a genus of ornithopod dinosaur from the Late Cretaceous Period of what is now North America, about 76-73 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 ...