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lepidosaurian
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lepidosaurian

reptile subclass
Also known as: Lepidosauria

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annotated classification

  • painted turtle (Chrysemys picta)
    In reptile: Annotated classification

    Subclass Lepidosauria (lepidosaurians) Upper Jurassic to present. Two orders. No teeth on parasphenoid; teeth attached superficially to upper and lower jaws; parietal eye in parietal; transverse cloacal opening. Order Rhynchocephalia (Sphenodontida) (tuatara) Middle Triassic to present. Three families, about 20 genera, but

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  • major vertebrate groups
    In vertebrate: Annotated classification

    Subclass Lepidosauria No bipedal specializations; 2 complete temporal openings; complete palate; oviparous; male is without penis. Subclass Archosauria (ruling reptiles) Some ancient forms had bipedal locomotion; longer hind legs; semiaquatic; webbed feet; teeth in sockets; single penis; oviparous; includes extinct dinosaurs.

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