After Reisz, Dilkes & Berman, 1998, Reisz & Dilkes, 2003, Anderson & Reisz, 2004, and Berman, Henrici, Sumida, Martens & Pelletier, 2014

<==o †Varanopidae Romer & Price, 1940 sensu Reisz & Dilkes, 2003 [Varanopseidae (Romer & Price, 1940) Langston & Reisz, 1981; Varanopsidae]
   |?- †Basicranodon fortsillensis Vaughn, 1958
   |?- †Thrausmosaurus serratidens Fox, 1962
   |?-o †Varanosaurus Broili, 1904 [jr. syn. to Varanops??]
   |  |?- †V. sp. [AMNH-24582]
   |  |?- †V.? sp. [AMNH-24583]
   |  `-- †V. agutirostris  Broili, 1904
   |-- †Archaeovenator hamiltonensis Reisz & Dilkes, 2003
   `--+-- †Pyozia mesenensis Anderson & Reisz, 2004
      `--+--o †Mesenosaurinae Romer, 1956 [Mycterosaurinae Reisz & Berman, 2001]
         |  |-- †Heleosaurus scholtzi Broom, 1907
         |  `--+-- †Elliotsmithia longiceps Broom, 1937
         |     `--+-- †Mycterosaurus longiceps [Eumatthevia]
         |        `-- †Mesenosaurus romeri Efremov, 1938 [Mesenosauridae] [has been treated as a Diapsida incertae sedis]
         `--o †Varanopinae Romer, 1936 [Varanodontinae Reisz & Berman, 2001]
            |--o †Aerosaurus Romer, 1937
            |  |-- †A. greenleeorum Romer, 1937
            |  `-- †A. wellesi Langston & Reisz, 1981
            `--+--+-- †Varanodon agilis Olson, 1965
               |  `-- †Watongia meieri Olson, 1974
               `--+-- †Tambacarnifex unguifalcatus Berman, Henrici, Sumida, Martens & Pelletier, 2014
                  `-- †Varanops brevirostris Williston, 1911 [Varanoops]

Reference(s):

Special thanks to:

Jos H. M. Dols, for gathering additional information and species of these animals.