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Definitions of rhynchocephalia
  1. noun
    tuataras; extinct forms from middle Triassic
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Definition that contains rhynchocephalia
  • tuatara only extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New Zealand
  • genus sphenodon coextensive with the order Rhynchocephalia: tuataras
  • sphenodon coextensive with the order Rhynchocephalia: tuataras
  • sphenodon punctatum only extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New Zealand
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