Scincogekkonomorpha

Scincogekkonomorpha Temporal range: Late Jurassic–Present PreЄ Є O S D C P T J K Pg N
White-headed dwarf gecko (Lygodactylus picturatus)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Clade:	Scincogekkonomorpha Sukhanov, 1961
Subgroups
†Ardeosaurus †Bavarisaurus †Eichstaettisaurus †Jucaraseps †Liushusaurus †Parviraptor †Pedrerasaurus †Saurillodon †Scandensia †?Yabeinosaurus Scleroglossa

Scincogekkonomorpha is a clade (evolutionary grouping) of lizards that includes scleroglossans and all lizards more closely related to scleroglossans than to iguanians. These "stem" scleroglossans include extinct lizards from the Late Jurassic and Early Cretaceous such as Bavarisaurus, Eichstaettisaurus, Liushusaurus, and Scandensia.^[1] Scincogekkonomorpha was named in 1961 and is now occasionally used as a stem-based taxon in contrast to the node-based taxon Scleroglossa. According to phylogenies based on morphological characteristics, Scincogekkonomorpha is the sister taxon of Iguania and together they make up crown group Squamata, the smallest clade including all living snakes and lizards.^[2]

References

1. Susan E. Evans; Yuan Wang (2010). "A new lizard (Reptilia: Squamata) with exquisite preservation of soft tissue from the Lower Cretaceous of Inner Mongolia, China". Journal of Systematic Palaeontology 8 (1): 81–95. doi:10.1080/14772010903537773.
2. Conrad, J. L. (2008). "Phylogeny and Systematics of Squamata (Reptilia) Based on Morphology". Bulletin of the American Museum of Natural History 310: 1–0. doi:10.1206/310.1.