Cynosphenodon
| Cynosphenodon Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Rhynchocephalia |
| Family: | Sphenodontidae |
| Genus: | Cynosphenodon Reynoso, 1996 |
| Type species | |
| †Cynosphenodon huizachalensis Reynoso, 1996
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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.[1] Growth patterns in the teeth of Cynosphenodon suggest its close relationship with the modern tuatara.[2]
References
- ^ Reynoso, Victor-Hugo (1996-06-05). "A Middle Jurassic Sphenodon-like sphenodontian (Diapsida: Lepidosauria) from Huizachal Canyon, Tamaulipas, Mexico". Journal of Vertebrate Paleontology. 16 (2): 210–221. doi:10.1080/02724634.1996.10011309. ISSN 0272-4634.
- ^ Reynoso, V. H. (2003). Growth patterns and ontogenetic variation of the teeth and jaws of the Middle Jurassic sphenodontian Cynosphenodon huizachalensis (Reptilia: Rhynchocephalia). Canadian Journal of Earth Sciences 40(4), 609–619
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