archosaur

/ˈɑrkəˌsɔər/
IPA guide

Other forms: archosaurs

Definitions of archosaur
  1. noun
    group of extinct reptiles including dinosaurs, plesiosaurs, pterosaurs, ichthyosaurs, thecodonts
    synonyms: archosaurian, archosaurian reptile
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    types:
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    dinosaur
    any of numerous extinct terrestrial reptiles of the Mesozoic era
    flying reptile, pterosaur
    an extinct reptile of the Jurassic and Cretaceous having a bird-like beak and membranous wings supported by the very long fourth digit of each forelimb
    thecodont, thecodont reptile
    presumably in the common ancestral line to dinosaurs and crocodiles and birds
    ichthyosaur
    any of several extinct sea-dwelling reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs
    plesiosaur, plesiosaurus
    extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous
    nothosaur
    extinct marine reptile with longer more slender limbs than plesiosaurs and less completely modified for swimming
    ornithischian, ornithischian dinosaur
    herbivorous dinosaur with a pelvis like that of a bird
    iguanodon
    massive herbivorous bipedal dinosaur with a long heavy tail; common in Europe and northern Africa; early Cretaceous period
    saurischian, saurischian dinosaur
    herbivorous or carnivorous dinosaur having a three-pronged pelvis like that of a crocodile
    diplodocus
    a huge quadrupedal herbivore with long neck and tail; of late Jurassic in western North America
    titanosaur, titanosaurian
    amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the southern hemisphere
    argentinosaur
    huge herbivorous dinosaur of Cretaceous found in Argentina
    ground-shaker, seismosaur
    huge herbivorous dinosaur of the Cretaceous found in western North America
    pterodactyl
    extinct flying reptile
    ichthyosaurus
    ichthyosaurs of the Jurassic
    Stenopterygius quadrisicissus, stenopterygius
    an ichthyosaur of the genus Stenopterygius
    type of:
    diapsid, diapsid reptile
    reptile having a pair of openings in the skull behind each eye
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