Parent taxon: Squamata according to R. A. Pyron et al. 2013
See also Estes 1969, Estes 1983, Estes et al. 1988, Gao and Norell 2000, Krause et al. 2003, Kuhn 1946, Kuhn 1966, Nydam 2002 and Smith 2006
Sister taxa: Ameivoidea, Amphisbaenia, Anguimorpha, Anhuisaurus, Anomalopsis, Anqingosaurus, Araeoscelomorphi, Ardeosaurus, Asagaolacerta, Bavarisaurus, Changjiangosaurus, Cryptovaranoides, Cuencasaurus, Dibamidae, Draconoidea, Eichstaettisaurus, Episquamata, Gekkonomorpha, Hakuseps, Haplodontosaurus, Harpagosaurus excedens, Hongshanxi, Hoyalacerta, Huehuecuetzpalli, Iguana haueri, Iguanomorpha, Jucaraseps, Kuroyuriella, Lacertibaenia, Lacertilia, Liushusaurus, Macrocnemidae, Megachirella, Moqisaurus, Mosasauridae, Mosasauroidea, Oculudentavis, Olindalacerta, Ophidia, Oxiella, Paikasisaurus, Palaeophidae, Paleochelco, Pangekkota, Panscincoidea, Panxantusiidae, Panxenosaurus, Paraplacosauriops, Parasaurillus, Parviraptor, Pseudosaurillus, Pythonomorpha, Sauripes, Scandensia, Scincogekkonomorpha, Scincomorpha, Scleroglossa, Tedorosaurus, Thalattosauromorphi, Trachelosauridae, Vialorophis, Xestops gracilis, Yabeinosaurus, Yabeinosaurus youngi, Zanclodontidae
Subtaxa: Carusia Cordylidae Cordyliformes Dakotaseps Dimekodontosaurus Eoxanta Estescincosaurus Feyliniidae Foliesaurus Gerrhosauridae Globaura Hymenosaurus Myrmecodaptria Ornatocephalus Paramacellodidae Parmeosaurus Pyrenasaurus Scincidae Scincoideus Tepexisaurus Webbsaurus Xantusiidae
Ecology: