Pachycephalosaurus dinosaur review with Moon Man
Pachycephalosaurus From Wikipedia, the free encyclopedia Pachycephalosaurus Temporal range: Late Cretaceous, 70–66 Ma PreЄ Є O S D C P T J K Pg N ↓ Pachycephalosaurus wyomingensis dinosaur (Upper Cretaceous; Montana, USA).jpg Cast of the "Sandy" specimen Scientific classification e Kingdom: Animalia Phylum: Chordata Clade: Dinosauria Order: †Ornithischia Family: †Pachycephalosauridae Tribe: †Pachycephalosaurini Genus: †Pachycephalosaurus Brown & Schlaikjer, 1943 (conserved name) Type species †Pachycephalosaurus wyomingensis Gilmore, 1931 (conserved name) Species †Pachycephalosaurus wyomingensis (Gilmore, 1931) (conserved name) Synonyms Tylosteus ornatus Leidy, 1872 (rejected name) Troodon wyomingensis Gilmore, 1931 Stygimoloch spinifer? Galton & Sues, 1983 Dracorex hogwartsia? Bakker et al., 2006 Pachycephalosaurus (/ˌpækɪˌsɛfələˈsɔːrəs/; meaning "thick-headed lizard," from Greek pachys-/παχυς- "thick", kephale/κεφαλη "head" and sauros/σαυρος "lizard") is a genus of pachycephalosaurid dinosaurs. The type species, P. wyomingensis, is the only known species. It lived during the Late Cretaceous Period (Maastrichtian stage) of what is now North America. Remains have been excavated in Montana, South Dakota, and Wyoming. It was an herbivorous creature which is primarily known from a single skull and a few extremely thick skull roofs, though more complete fossils have been found in recent years. Pachycephalosaurus was one of the last non-avian dinosaurs before the Cretaceous–Paleogene extinction event. Another dinosaur, Tylosteus of western North America, has been synonymized with Pachycephalosaurus. Like other pachycephalosaurids, Pachycephalosaurus was a bipedal herbivore with an extremely thick skull roof. It possessed long hindlimbs and small forelimbs. Pachycephalosaurus is the largest known pachycephalosaur. The thick skull domes of Pachycephalosaurus and related genera gave rise to the hypothesis that pachycephalosaurs used their skulls in intra-species combat. This hypothesis has been disputed in recent years.
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