Abstract: Laogaochuan, the locality with rich chilothere fossils, is located about 60 to the northwest of Fugu County seat in Shaanxi Province. In this district, the Neogene strata located above the Mesozoic coal—bearing formation is 52m thick, all the which is underlying the loess. The Hipparion—fauna bearing chilothere fossils was collected from the lower and middle beds of the Neogene strata, with an age of 7.4— 5.3Ma B. P. based on paleomagnetic daüng, i. e. the late Late Miocene (MN12— 13) (Xue et al., 1995). A new species of Acerorhinus from this locality is described and discussed in this paper.

摘要： 记述的Acerorhinus fuguensis sp. nov.是Acerorhinus属中一个相当进步的种。府谷保存完整的标本使我们对Acerorhinus的特征有了更全面且准确的认识。新种以强烈外展的鼓后突和头骨顶面在眶前的骤然收缩区别于塞瓦斯托波尔的A. zernowi和柴达木的A. tsaidamensis。新种下门齿内刃上翻的特点显示Acerorhinus属有向Chilotherium属演化的趋势。