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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.
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.
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 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 ...
Sinosaurus was a relatively large theropod by the standards of the Early Jurassic. With the use of virtual skeletal mount, Liang et al. (2024) estimated that Sinosaurus was a large theropod around 5.85 metres (19.2 ft) long with a maximum body mass of 895 kilograms (1,973 lb).
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."
As most dinosaur paleontologists have advocated a shift away from traditional, ranked Linnaean taxonomy in favor of rankless phylogenetic systems, [3] few ranked taxonomies of dinosaurs have been published since the 1980s.
Lophostropheus (pronounced: "LOAF-oh-STRO-fee-us") is an extinct genus of coelophysoid theropod dinosaur that lived approximately 205.6 to 196.5 million years ago during the boundary between the Late Triassic Period and the Early Jurassic Period, in what is now Normandy, France.