After Uetz, Etzold & Chenna, 1995-2000 [“The TIGR Reptile Database ” (former EMBL Reptile Database)]

<==o Xenosauridae
   |-- †Oxia karakalpakiensis Nesov, 1985
   |--o Shinisaurinae Ahl, 1930
   |  |-- †Bahndwivici ammoskius Conrad, 2006; L.Eoc. WNAm.
   |  `-- Shinisaurus crocodilurus Ahl, 1930; R. SEAs. (Chinese crocodile lizard; kiinankyhmylisko)
   `--o Xenosaurinae
      `--o Xenosaurus Cope, 1867 [taxonomic history] (kyhmyliskot)
         |--o X. grandis (Gray, 1856) [taxonomic history]
         |  |-- X. g. rackhami Stuart, 1941
         |  |-- X. g. agrenon King & Thompson, 1968
         |  |-- X. g. arboreus Lynch & Smith, 1965
         |  |-- X. g. grandis (Gray, 1856)
         |  `-- X. g. sanmartinensis Werler & Shannon, 1961
         |-- X. newmanorum Taylor, 1949 [taxonomic history]
         |-- X. platyceps King & Thompson, 1968 [taxonomic history]
         |-- X. rectocollaris Smith & Iverson, 1993 [taxonomic history]
         `-- X. penai Pérez Ramos, de la Riva & Campbell, 2000 [taxonomic history]

Reference(s):