1. College of Earth Sciences, Jilin University, Changchun 130061, China; 2. Research Centre of Palaeontology and Stratigraphy, College of Earth Sciences, Jilin University, Changchun 130026, China 3. Key Laboratory of Stratigraphy and Palaeontology, Ministry of Natural Resources, Beijing 100037, China 4. Core and Sample Center of Natural Resources, China Geological Survey, Sanhe 065201, Hebei, China

  In a region where lizard fossils are rare, this study explores a groundbreaking discovery of squamate lizard materials from the upper part of Nenjiang Formation (early Campanian) in Jilin Province, Northeast China. Despite the fragmentary nature of the dentaries, they exhibit distinct tooth morphological characteristics of squamate lizards, suggesting insectivorous and omnivorous diets for these small reptiles. This finding not only represents a significant addition to the squamate lizard fossil records from the Late Cretaceous in Northeast China but also contributes to our understanding of the paleogeographic distribution of squamate lizards. Furthermore, it sheds new light on the terrestrial vertebrate fauna of the Cretaceous Songliao Basin.