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Dilophosaurus (/ d aɪ ˌ l oʊ f ə ˈ s ɔːr ə s,-f oʊ-/ [1] dy-LOH-fə-SOR-əs, -foh-) is a genus of theropod dinosaurs that lived in what is now North America during the Early Jurassic, about 186 million years ago. Three skeletons were discovered in northern Arizona in 1940, and the two best preserved were collected in 1942.
A large, short-tailed species with heterogeneous dorsal scalation and a discontinuous vertebral crest. There are several slightly enlarged scales below the tympanum, a row of enlarged submaxillaries and a series of large, lanceolate scales on the anterior edge of the gular pouch.
This dinosaur restoration is inaccurate, or its accuracy is disputed. Reason: The Dilophosaurus have pronated hands and a Jurassic Park style frill.. You may ask further questions about the accuracy of this image at the image review page of WikiProject Dinosaurs on the English Wikipedia.
Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.
Dilophosaurus skull reconstruction by Brian Engh; Dilophosaurus skeletal by Scott Hartman "A comprehensive anatomical and phylogenetic evaluation of Dilophosaurus wetherilli (Dinosauria, Theropoda) with descriptions of new specimens from the Kayenta Formation of northern Arizona."
Probable Dilophosaurus footprint from Red Fleet State Park, northeastern Utah. The western regions of North America, especially the western border of the Western Interior Seaway, are common for dinosaur trackways. Wyoming has dinosaur trackways from the Late Cretaceous, 65 ma. [18]
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This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. Extinct superfamily of dinosaurs Coelophysoids Temporal range: Late Triassic - Early Jurassic, 227–183 Ma PreꞒ Ꞓ O S D C P T J K Pg N Mounted skeleton of Coelophysis bauri, Cleveland Museum of Natural History Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum ...