After Carroll, 1988, and Rieppel, 1994

Family-level taxonomy of basal lepidosauriforms.

<==o Lepidosauriformes Gauthier, Estes & de Queiroz, 1988
   |?- †Palaeagama vielhaueri Broom, 1926; ?U.Perm. ?L.Trias. SAf. [paraphyletic Paliguanidae]
   |?- †Paliguana whitei Broom, 1903; ?U.Perm. ?L.Trias. SAf. [paraphyletic Paliguanidae]
   |?- †Saurosternon bainii Huxley, 1868; ?U.Perm. ?L.Trias. SAf. [paraphyletic Paliguanidae]
   `--+--o †Eolacertilia [paraphyletic?]
      |  |?- †Colubrifer campi Carroll, 1982 [jr synon. Owenetta Broom, 1939 (Parareptilia: Owenettidae)]
      |  |?- †Lacertulus bipes Carroll & Thompson, 1982; ?U.Perm. ?L.Trias. SAf.
      |  |?- †Litakis gilmorei Estes, 1964; U.Cret. WNAm.
      |  |-- †Fulengia youngi Carroll & Galton, 1977; U.Trias. SEAs. [Fulengidae]
      |  `--o †Kuehneosauridae Robinson, 1962
      |     |?-+?- †Longisquama insignis Saharov [Longisquamidae] [Diapsida indet.]
      |     |  `-- †Icarosaurus siefkeri Colbert, 1966; U.Trias. ENAm.
      |     |-- †Kuehneosaurus latus Robinson, 1962; U.Trias. WEu.
      |     |-- †Kuehneosuchus latissimus (Robinson, 1962); U.Trias. WEu.
      |     |-- †Pamelina polonica Evans, 2009
      |     |?- †Perparvus
      |     `?- †Rhabdopelix longispinis Cope, 1870 (nomen dubium)
      `--o Lepidosauria Dumeril & Bibron, 1839 [non Haeckel, 1866]
         |?- †Tamaulipasaurus morenoi Clark & Hernandez R., 1994
         |-- Sphenodontida [Rynchocephalia Günther, 1867] (Sphenodontians; alkuliskot)
         `-- Squamata Oppel, 1811 [non Merrem, 1820] (Lizards " Snakes; suomumatelijat)


Lepidosauria incertae sedis:

    †‘Patricosaurus merocratus’ Seeley, 1887 [in partim, lepidosaur parts]


Reference(s):