Sedimentary environment and distribution of brachiopods during the Changhsingian in Xingwen,Sichuan Province of the uppe......

广西南部板董和柳桥地区晚长兴期台地及台地坳陷区沉积地层中发育两个不同的小型有孔虫动物群,它们与放射虫相伴生,呈实体化石形式......

On the basis of researches over several years on bioslratigraphy of Changhsingian at Meishan Section Din Changxing Couni......