甘肃灵台文王沟(93002地点)晚中新世──早上新世生物地层

文王沟93002地点剖面从下至上被分成4个生物地层带。Ⅰ带可能属于晚中新世保德期中期，Ⅱ＋Ⅲ带属于上新世早期，Ⅳ带属于上新世中期。将各带与93001地点剖面进行了对比。着重探讨了鼠科动物中的Huaxiamys n. sp.向H.primitivus以及Occitanomys n. sp.向Chardinomys的演化规律。

LATE MIOCENE-EARLY PLIOCENE BIOSTRATIGRAPHY OF LOC. 93002 SECTION, LINGTAI, GANSU

The Loc. 93002 was found by the latter author in 1993, which yielded large amounts of small mammal fossils, however, only from one level. Zheng and Zhang (2000) primarily correlated it to the WL17 of Loc. 93001 section. For better understanding its precise stratigraphic position and correlation with the other sections, more detail geological and biostratigraphic work was carried out in 1999. The geographic position of this section was shown in Fig.1 of Zheng and Zhang (2000). The basic fieldwork method is the same as that was adopted in the work on Loc. 93001 section (Zheng and Zhang, 2000). Since no paleomagnetic data can be used, this paper mainly focused on the biostratigraphic classification and correlation, and also on the bioevents in the evolution of Muridae. CL in this paper represents the stratigraphic level of this section.