genus Sphenodon

Thesaurus

Noun

1.genus Sphenodon - coextensive with the order Rhynchocephalia: tuatarasSphenodonreptile genus - a genus of reptilesorder Rhynchocephalia, Rhynchocephalia - tuataras; extinct forms from middle TriassicSphenodon punctatum, tuatara - only extant member of the order Rhynchocephalia of large spiny lizard-like diapsid reptiles of coastal islands off New Zealand