| Cteniogenys Temporal range: Middle-Late Jurassic,
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| Dentary of the holotype specimen VP.001088 | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | †Choristodera |
| Family: | †Cteniogenidae Gilmore, 1928 |
| Genus: | †Cteniogenys Seiffert, 1975 |
| Species: | †C. antiquus
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| Binomial name | |
| †Cteniogenys antiquus Gilmore, 1928
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Cteniogenys is a genus of choristodere, a morphologically diverse group of aquatic reptiles. It is part of the monotypic family Cteniogenidae.[1] The type and only named species, C. antiquus, was named in 1928 by Charles W. Gilmore.[2] The holotype, VP.001088, was collected in the Morrison Formation (Como Bluff), Wyoming in 1881 by William H. Reed. More specimens have been discovered since then, including specimens from the Late Jurassic of Portugal and Middle Jurassic of Britain, which have not been assigned to species.
- ^ J. Seiffert. 1975. Upper Jurassic lizards from central Portugal. Contribuição para o conhecimento da Fauna do Kimerridgiano da Mina de Lignito Guimarota (Leiria, Portugal). Serviços Geológicos de Portugal, Memória (Nova Série) 22:7-85
- ^ C. W. Gilmore. 1928. Fossil lizards of North America. Memoirs of the National Academy of Sciences. 22(3):1-201