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Pachycephalosaurus (/ ˌ p æ k ɪ ˌ s ɛ f əl ə ˈ s ɔː r ə s /; [2] meaning "thick-headed lizard", from Greek pachys-/ παχύς-"thickness", kephalon/ κεφαλή "head" and sauros/ σαῦρος "lizard") [3] is a genus of pachycephalosaurid ornithischian dinosaur. The type species, P. wyomingensis, is the only known definitive species.
This view was popularized in the 1956 science fiction story "A Gun for Dinosaur" by L. Sprague de Camp. Many paleontologists have since argued for the head-butting hypothesis, including Galton (1970) and Sues (1978). In this hypothesis, pachycephalosaurs rammed each other head-on, as do modern-day bighorn sheep and musk oxen.
tr This is a list of stratigraphic units from which dinosaur body fossils have been recovered. Although Dinosauria is a clade which includes modern birds, this article covers only Mesozoic stratigraphic units. Units listed are all either formation rank or higher (e.g. group).
This category lists dinosaur images that have been reviewed and approved at Wikipedia:WikiProject Dinosaurs/Image review either for their scientific accuracy or for their historical value. Subcategories
The only recorded find of a dinosaur fossil in Central America consists of a single femur discovered from Middle Cretaceous age deposits in Comayagua Department in the central part of Honduras. The fossil had been found in January, 1971 by Bruce Simonson and Gregory Horne, though it was later sent to the National Museum of Natural History, USA ...
A gigantic dinosaur twice the size of a city bus will soon be on display for the public to see – its one-of-a-kind green bones and all. The team of paleontologists who discovered, recovered and ...
This is a list of non-avian dinosaurs whose remains have been recovered in Africa.Africa has a rich fossil record. It is rich in Triassic and Early Jurassic dinosaurs. . African dinosaurs from these time periods include Megapnosaurus, Dracovenator, Melanorosaurus, Massospondylus, Euskelosaurus, Heterodontosaurus, Abrictosaurus, and Lesoth
Marginocephalia (/ ˌ m ɑːr dʒ ə n oʊ s ə ˈ f æ l i ə / Latin: margin-head) is a clade of ornithischian dinosaurs that is characterized by a bony shelf or margin at the back of the skull. These fringes were likely used for display.