Leiosaurus Duméril and Bibron 1837 (lizard)
Vertebrata - Squamata - Iguanidae
Parent taxon: Iguanidae according to R. Estes 1983
Sister taxa: Aciprion, Basiliscus, Callisaurus, Cnephasaurus, Corytophanes, Crotaphytus, Ctenosaura, Cyclura, Cypressaurus, Dipsosaurus, Erichosaurus, Geiseltaliellus, Harrisonsaurus, Holbrookia, Iguana, Laemanctus, Leiocephalus, Paradipsosaurus, Parasauromalus, Pariguana, Phrynosoma, Phrynosomatinae, Pristiguana, Sauromalus, Sceloporus, Suzanniwana, Swainiguanoides, Urosaurus, Uta, Xihaina
Subtaxa: none
Ecology: ground dwelling omnivore