【摘要】 描述了采自西藏羌塘中部地区■类化石的一部分,计7属13种,分属4科,两超科。其中Polydiexodina5种,含2新种。■类动物群面貌与Neoschwagerina带相当,确定产Polydiexodina地层的形成时代属中二叠世茅口期。扩大了Polydiexodina的分布范围,为较大区域性地层的划分、对比提供了生物依据,也为研究古生物地理分区提供了新资料。更多还原

【Abstract】 This paper deals with the description of fusulinid fossils collected from the central area of Qiangtang, Tibet. Totally, 7 genera and 13 species, assigned to 4 families and 2 superfamilies, were discovered. Five species are of Polydiexodina including two new species. The fusulinid fauna here corresponds to Neosch- wagerina zone so that the time of Polydiexodina-bearing strata is Maokouan in age of Middle Permian. The discovery of Polydiexodina provides new data to the study of its biogeography distribution and for the classification and correlation of the strata on a larger scale.更多还原