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词汇 pachycephalosaur
释义

Definition of pachycephalosaur in English:

pachycephalosaur

noun ˌpakɪˈsɛfələsɔːˌpakɪˈkɛfələsɔːˌpakiˈsefələsôr
  • A bipedal herbivorous dinosaur of the late Cretaceous period, with a thick domed skull.

    肿头龙

    Infraorder Pachycephalosauria, order Ornithischia: several genera, including Pachycephalosaurus

    Example sentencesExamples
    • 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.
    • Marginocephalia consists mainly of the pachycephalosaurs (bone-heads) and the ceratopsians (horned dinosaurs), like Triceratops.
    • The domed skulls of pachycephalosaurs may likewise have been vibrantly colored to indicate sexual maturity, attract a mate, or warn an adversary.
    • An alternate view, that ceratopsians and pachycephalosaurs diverged from ornithopod dinosaurs in the Late Jurassic, is more consistent with the preserved biostratigraphic evidence.
    • More recently, paleontologists have suggested that other dinosaurs, notably the dome-headed pachycephalosaurs, also used their cranial appendages defensively.

Origin

From Greek pakhus 'thick' + kephalē 'head' + sauros 'lizard'.

Definition of pachycephalosaur in US English:

pachycephalosaur

nounˌpakiˈsefələsôr
  • A bipedal herbivorous dinosaur of the late Cretaceous period, with a thick domed skull.

    肿头龙

    Infraorder Pachycephalosauria, order Ornithischia: several genera, including Pachycephalosaurus

    Example sentencesExamples
    • Marginocephalia consists mainly of the pachycephalosaurs (bone-heads) and the ceratopsians (horned dinosaurs), like Triceratops.
    • 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.
    • More recently, paleontologists have suggested that other dinosaurs, notably the dome-headed pachycephalosaurs, also used their cranial appendages defensively.
    • The domed skulls of pachycephalosaurs may likewise have been vibrantly colored to indicate sexual maturity, attract a mate, or warn an adversary.
    • An alternate view, that ceratopsians and pachycephalosaurs diverged from ornithopod dinosaurs in the Late Jurassic, is more consistent with the preserved biostratigraphic evidence.

Origin

From Greek pakhus ‘thick’ + kephalē ‘head’ + sauros ‘lizard’.

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