After Denton & O'Neill, 1995 and Nydam & Cifelli, 2002

<==o Teiidae Gray, 1827 (Tegus; teijut)
   |?- †Harmodontosaurus emeryensis Nydam, 2002
   |?- †Sacognathus unicuspis Gao & Fox, 1991
   |--o †Chamopsiinae Denton & O'Neill, 1995
   |  |-- †Chamops segnis Marsh, 1892 [Alethesaurus; Lanceosaurus]
   |  |-- †Meniscognathus
   |  |-- †Leptochamops denticulatus
   |  `-- †Prototeius stageri Denton & O'Neill, 1995
   `--+?- †Ptilotodon wilsoni Nydam & Cifelli, 2002b, L. Cret. NA.
      |?- †Gilmoreteiidae Langer, 1998 [Teiidae: Macrocephalosaurinae Sulimski, 1975; Macrocephalosauridae Sulimski, 1975]
      |-- †Polyglyphanodontinae Gilmore, 1943b non Estes, 1983?
      `-- Teiidae Gray, 1827 sensu stricto (recent tegus; nykyteijut) [Recent: 9 genera / 116 species]

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