Navajosphenodon
Temporal range:
Holotype specimen, scale bar: 1 cm
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Rhynchocephalia
Family: Sphenodontidae
Subfamily: Sphenodontinae
Genus: Navajosphenodon
Simões, Kinney-Broderick & Pierce, 2022
Type species
Navajosphenodon sani
Simões, Kinney-Broderick & Pierce, 2022
CT scan of skull
Illustration of the skull in lateral view

Navajosphenodon is an extinct genus of sphenodontid reptile from the Early Jurassic Kayenta Formation of Arizona, United States. It is known from a fully articulated skeleton, and is similar in many aspects to the extant tuatara, both belonging to the Sphenodontinae, including sharing a complete lower temporal bar. It is one of the oldest known sphenodontines.[1]

Sphenodontia

Diphydontosaurus

Eusphenodontia

Planocephalosaurus

Clevosaurus

Neosphenodontia

Homoeosaurus

Pleurosauridae

Leptosaurus +†Kallimodon

Sapheosauridae

Sphenodontidae

Eilenodontinae

Sphenodontinae

Navajosphenodon

Cynosphenodon

Sphenofontis

Kawasphenodon

Sphenodon (tuatara)


References

  1. Simões, Tiago R.; Kinney-Broderick, Grace; Pierce, Stephanie E. (2022-03-03). "An exceptionally preserved Sphenodon-like sphenodontian reveals deep time conservation of the tuatara skeleton and ontogeny". Communications Biology. 5 (1): 195. doi:10.1038/s42003-022-03144-y. ISSN 2399-3642. PMC 8894340. PMID 35241764.


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