Abstract: As scientific collaborators' of the Chinrse-American joint project "Neogene Rocks and Faunas, Yushe Basin, Shanxi, PRC", the present authors, with William R. Downs; Northern Arizona University, sampled the Yushe microfauna in the fall of 1987 and 1988. The fossil remains were retrieved by surface collection and by wet-sieving bulk quantities of sediment. As one set of results from this project, following is a description of new taxa (one genus and five species) of murid rodents, including 164 specimens, of which most are isolated teeth. A more comprehensive report including all material collected will be published later. There has been little previous work on Yushe Muridae, with the notable exception of a paper on the murid Chardinomys yusheensis (Jacobs and Li, 1982) that bad been collected by an IVPP reconnaissance team in 1955 (our site YS57). This is the first time that substantial samples from many sites in Yushe Basin have been recovered from the Late Miocene to Pleistocene sequence of deposits. Herein we follow Storch (1987) on murid dental terminology. Specimens were measured (in mm) on a Wild M7A Stereomicroscope and photomicrographs were prepared with a Zeiss Digital Scanning Microscope 950 at 5KV under low magnification. The micromammal sites and murid biostratigraphy concerned are shown in fig. 1.

摘要： 本文描述了山西榆社盆地晚新生代鼠科化石中的新属种:Huaxiamys primitivus gen. et sp. nov., Huaxiamys downsi gen. et sp. nov., Micromys tedfordi sp. nov., Apodemus qiui sp. nov., Apodemus zhangwagouensis sp. nov.。