第56卷 第4期 古 脊 椎 动 物 学 报 pp. 306–326 2018年10月 VERTEBRATA PALASIATICA figs. 1–5 DOI: 10.19615/j.cnki.1000-3118.180410 Late Pleistocene proboscideans from Yangjiawan caves in Pingxiang of Jiangxi, with discussions on the Stegodon orientalis–Elephas maximus assemblage TONG Hao-Wen1,2,3 DENG Li4 CHEN Xi1,2,3 ZHANG Bei1,2,3 WEN Jun4 (1 Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044
[email protected]) (2 CAS Center for Excellence in Life and Paleoenvironment Beijing 100044) (3 University of Chinese Academy of Sciences Beijing 100049) (4 Pingxiang Museum, Jiangxi Province Pingxiang 337000) Abstract The mammalian fauna from the Yangjiawan caves in Jiangxi contains more than 40 species, including Stegodon and Elephas, whose age is Late Pleistocene. The 40 pieces of Stegodon fossils include such elements as DP2, DP3, DP4, M1, M3, dp3, m2 and m3, which can be included in the species S. orientalis according to their morphological characters and their dimensions; but with the following specialities: the teeth are relatively small, with thin but wrinkled enamel layer, the mammillae are lesser in number but well defined and equally developed, DP3 and dp3 with larger W/L ratios, and the cement is not well developed. The fossils of Elephas are few, only 2 isolated lamellae whose thickness and size correspond with those of Elephas maximus. In addition, a fragment of tusk (upper incisor) of elephant was also recovered, whose Schreger outer angle is 136°, which falls within the ranges of both Stegodon and Elephas.