| 词条 | Cynosphenodon |
| 释义 |
|fossil_range = {{fossil_range|170|160|Middle Jurassic}} |taxon= Cynosphenodon |authority= Reynoso, 1996 |type_species = {{extinct}}Cynosphenodon huizachalensis |type_species_authority = Reynoso, 1996 }}Cynosphenodon ({{IPAc-en|ˌ|s|aɪ|n|ə|ˈ|s|f|ɛ|n|ə|d|ɒ|n}} {{respell|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]{{portal|Paleontology}} References1. ^{{Cite journal|last=Reynoso|first=Victor-Hugo|date=1996-06-05|title=A Middle Jurassic Sphenodon-like sphenodontian (Diapsida: Lepidosauria) from Huizachal Canyon, Tamaulipas, Mexico|url=https://www.researchgate.net/publication/254313647_A_Middle_Jurassic_Sphenodon-like_sphenodontian_Diapsida_Lepidosauria_from_Huizachal_Canyon_Tamaulipas_Mexico|journal=Journal of Vertebrate Paleontology|language=en|volume=16|issue=2|pages=210–221|doi=10.1080/02724634.1996.10011309|issn=0272-4634|via=}} {{Taxonbar|from=Q5199996}}{{Sphenodontia}}{{Jurassic-reptile-stub}}2. ^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 4 : Jurassic lepidosaurs|Sphenodontia|Fossils of Mexico|Prehistoric reptile genera |
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