pachycephalosaur definition

  • noun:
    • some of different medium sized herbivorous dinosaurs of genus Pachycephalosaurus of the late Cretaceous amount of united states, having a beaked lips, rows of lumps on mind, and a domed skull as much as ten inches (25.4 cm) thick.
    • Any of a small grouping of herbivorous dinosaurs, associated with genus Pachycephalosaurus through the late Cretaceous duration
    • bipedal herbivore having 10 ins of bone tissue atop its mind; biggest boneheaded dinosaur ever found

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