关于中国的(?)类,近百年来,李四光、陈旭、盛金章等中外学者作了大量研究工作,(?)在石炭、二叠纪地层中的垂直分带及地层学意义也已为广大地质工作者所熟知,但对(?)的生态学方面研究则较少。(?)是已绝灭的单细胞微体动物,属原生动物门,肉足虫纲,有孔虫亚纲,系海生底栖有孔虫类。它多以完整个体原地赋存于贵州早二叠世各类碳酸盐岩石中,这就为研究 For the Chinese (?) Category, a great deal of research work has been done by Chinese and foreign scholars such as Li Siguang, Chen Xu and Sheng Jinzhang over the past century. The vertical zonation and stratigraphic significance in the Carboniferous and Permian strata have also been extensively studied Well known to geologists, there is less research on the ecology of (?). (?) Is extinct single-celled micro-animals, is a protozoan door, Carnivorous Gang, foraminifera subclass, Department of marine benthic foraminifera. It is more than intact individuals native to the early Permian carbonate rocks in Guizhou, which is for the study