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楔齿蜥科（学名：Sphenodontidae）为喙头目的一个科。
本科包括以下属：[1]
- Ankylosphenodon Reynoso, 2000
- Chometokadmon Costa, 1864
- Cynosphenodon Reynoso, 1996
- Derasmosaurus Barbera & Macuglia, 1992
- Diphydontosaurus Whiteside, 1986
- Eilenosaurus
- Elachistosuchus Janensch, 1949
- Glevosaurus Swinton, 1939
- Homeosaurus Meyer, 1847
- Homoeosaurus Meyer, 1845
- Kallimodon Cocude-Michel, 1963
- Kawasphenodon Apestegui'a, 2005
- Lamarquesaurus Apestegui'a & Rougier, 2007
- Leptosaurus Fitzinger, 1843
- Oenosaurus Rauhut, Heyng, López-Arbarello & Hecker, 2012
- Opisthias Gilmore, 1909
- Palacrodon Broom, 1906
- Paleollanosaurus Heckert, 2004
- Pelecymala Fraser, 1986
- Piocormus Wagner, 1852
- Planocephalosaurus Fraser, 1982
- Rhynchocephalus Owen, 1845
- Sapheosaurus Meyer, 1850
- Scharschengia Huene, 1940
- Sigmala Fraser, 1986
- Simila
- 楔齿蜥属 Sphenodon Gray, 1831
- Sphenofontis Villa et al., 2021
- Sphenotitan Martínez, Apaldetti, Colombi, Praderio, Fernandez, Santi Malnis, Correa, Abelin & Alcober, 2013
- Sphenovipera Reynoso, 2005
- Theretairus Simpson, 1926
- Toxolophosaurus Olson, 1960
- Zapatadon Reynoso & Clark, 1998
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