Class Reptilia Order Sphenodontia Rank Genus | Phylum Chordata Superorder Lepidosauria | |
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Cynosphenodon (/ˌsaɪnəˈsfɛnədɒn/ SY-nə-SFEN-ə-don; "Dog Sphenodontian") is an extinct genus of the family Sphenodontidae from the Middle Jurassic La Boca Formation of Tamaulipas, Mexico. Growth patterns in the teeth of Cynosphenodon suggest its close relationship with the modern tuatara.
References
Cynosphenodon Wikipedia(Text) CC BY-SA