青海西宁盆地中新世地层及哺乳动物群性质

继对1978年采自青海西宁盆地中新世哺乳动物的记述后,本文简介盆地中新统地层,并讨论了各化石层的哺乳动物群的性质。从化石的初步分析表明,西宁盆地在中新世时,有比较连续的沉积,这使它在我国晚第三纪地层的划分和对比中占有重要的位置,并可能为与欧洲有关层位进行比较,进而为中新世欧亚动物地理的研究提供线索。

DISCUSSION ON MIOCENE STRATIGRAPHY AND MAMMALS FROM XINING BASIN,QINGHAI

Fossils collected by the authors in the Miocene deposits of Xining Basin, Qinghai in 1978 were described one after another recently (Li and Qiu, 1980; Qiu, Li and Wang, 1981). This paper deals with a brief introduction to the Miocene sequence, given on p. 313 in the Chinese text and a remark at the known fossils from the ten localities of Miocene, listed on p. 314. The characters of the mammalian fossils indicate that the Miocene mammal-bearing sediments of the basin contain three fossil levels i.e. the Hsienshuiho Formation of Late Miocene age, Chetougou Formation of Miocene and the Early Miocene Xiejia Formation. The correlation chart showing the calibration of the Miocene mammalian ones in China and Europe, is made on p. 318 in the Chinese text.