Abstract: This paper deals with all the micromammal fossils other than those of dipodids (Wang & Qiu, 2000). They are sampled from the red mudstone of the Lower Member (lower red mudstone) of the Xianshuihe Formaüon. They were found in Xiagou (GL 9513), Shangxigou (GL 9601) in the middle part of the lower red mudstone and Qujiachuan (9707, 9712) in the lower part of the lower red mudstone. Most of the fossils were collected by screening washing.