Abstract: Lizards are now relatively well known from the Jehol Group of northeastern China, seven taxa having been named from the group or equivalent horizons. Here we describe a lizard specimen from a fossil horizon at Daohugou of Ningcheng, Nei Mongol, which predates the Yixian Formation of the Jehol Group. This is the second lizard from this locality. Comparisons with ontogenetic series of modern lizards show that the new Daohugou lizard is a juvenile. The specimen is notable in having a slender body and relatively long limbs and extremities. Even allowing for immaturity, its proportions differ markedly from those of previously described Jehol Biota lizards. Comparison with modern lizards suggests the new Daohugou lizard may have been at least partly scansorial. Its phylogenetic placement is problematic given its immaturity and preservation, but skull characters and vertebral number preclude attribution to Iguania and it may be a scleroglossan.