Abstract: Prohyracodon cf. P. meridionale, represented by a fragmentary upper jaw with M1−M3(IVPP V 13101), is briefly described in the present paper. The fossil was found at Huoshipo near Guojia Village, WangmaoTown, Yuanqu County. The upper molars of V 13101 resemble those of P. meridionale in general tooth morphology and in size, but differ mainly in lacking distinct antecrochet. The age of the fossil-bearing bed may be of Middle Eocene Irdinmamhan as revealed by associated fossil mammals. 

摘要： 火石坡是垣曲盆地近年来新发现的化石点,产有丰富的哺乳动物化石,多数已被报道(黄学诗等,1999; Zhang et al., 2001; 刘丽萍、黄学诗,2002; 黄学诗、王景文,2002; Dawson et al., 2003; 黄学诗,2004),本文仅对其中的奇蹄目原蹄犀类化石予以简单记述，它的发现为垣曲盆地始新世动物群增加了新成员。