Pachycephalosaurus (; meaning "thick-headed lizard", from Greek pachys/παχύς "thickness", kephalon/κεφαλή "head" and sauros/σαῦρος "lizard") is a genus of pachycephalosaurid ornithischian dinosaur. The type species, P. wyomingensis, is the only known definitive species.
Pachycephalosaurus (; meaning "thick-headed lizard", from Greek pachys/παχύς "thickness", kephalon/κεφαλή "head" and sauros/σαῦρος "lizard") is a genus of pachycephalosaurid ornithischian dinosaur. The type species, P. wyomingensis, is the only known definitive species.
Source: Wikipedia "Pachycephalosaurus" · CC BY-SA 4.0
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