One of the mysteries of the English language finally explained.
A bipedal herbivorous dinosaur of the late Cretaceous period, with a thick domed skull.
- ‘The already diverse and abundant record of dinosaur skeletal fossils was increased by the discovery in 1999 of the first evidence of pachycephalosaurs from this region.’
- ‘The domed skulls of pachycephalosaurs may likewise have been vibrantly colored to indicate sexual maturity, attract a mate, or warn an adversary.’
- ‘Marginocephalia consists mainly of the pachycephalosaurs (bone-heads) and the ceratopsians (horned dinosaurs), like Triceratops.’
- ‘More recently, paleontologists have suggested that other dinosaurs, notably the dome-headed pachycephalosaurs, also used their cranial appendages defensively.’
- ‘An alternate view, that ceratopsians and pachycephalosaurs diverged from ornithopod dinosaurs in the Late Jurassic, is more consistent with the preserved biostratigraphic evidence.’
From Greek pakhus ‘thick’ + kephalē ‘head’ + sauros ‘lizard’.
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