Abstract: The junior author of the present paper happened to have purchased some isolated teeth from a Chinese medicine drug—store of the Dongxiang Nationality Autonomous County, which is situated about 70km southwest of Lanzhou, the capital city of the Gansu Province, in 1988. The fossils were reportedly unearthed from a village called Wangii. The teeth belong to only two form: an elasmothere, smaller and more primitive than the well known Sinotherium, and a Hipparion of very small size. It is highly probable that their geologic age is slightly earlier than the typical Baodean Mammal Age. Since the mammalian fossils of the pre—Baodean Hipparion fauna are seldom encountered in China, a short report is given below.