Dalinghosaurus longidigitus (Ji 1998) Early Cretaceous was reported to be related to the modern-day lizards in the family Xenosauridae (Shinisaurus in China), Xenosaurus in Mexico and two extinct lizards, Exostinus and Carusia. One fossil skeleton of Dalinghosaurus includes ten juveniles (Evans and Wang 2005). Despite the disparity in limb length, Evans and Wang (2005) considered Dalinghosaurus a climber, not a biped. The elongated hind foot was equal in length to the rest of the hind limb.
In the large study Dalinghosaurus nested as more primitive, outside the Squamata (Iguania + Scleroglossa) + Tritosauria, as a sister to Homoeosaurus and derived from Gephyrosaurus. Thus a Late Permian sister to Dalinghosaurus and Homoeosaurus was the basal squamate from which all other squamates evolved.
Distinct from Homoeosaurus, the skull of Dalinghosaurus had a larger orbit and a deeper preorbital bone with a reduced lacrimal. The jugal and postorbital bones were relatively more gracile. The mandible was deeper with a longer, deeper retroarticular process.
The cervicals were longer. The dorsal ribs were much wider producing a flattened cross-section. The transverse processes of the anterior caudals were longer. The tail was longer and more robust.
The scapulocoracoid was fused and fenestrated anteriorly. The interclavicle is cruciform. The humerus, radius and ulna were more gracile. The metacarpals were longer.