The Rhynchocephalia are represented by two species in the recent fauna. The nocturnal tuatara Sphenodon punctatus and Sphenodon guntheri live on small islands off the coast of New Zealand (DAUGHERTY et al. 1990; POUGH et al. 1998).
KeywordsCopulatory Organ Male Copulatory Organ Ground Pattern Grass Snake Nasal Opening
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