Roof shale floras help understand the transition of vegetational landscapes from a peat–forming environment to a clasti......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

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

湖北建始黄岩及邻区二叠系大隆相区产丰富的菊石、双壳类、鱼类以及少量的壳薄体轻的腕足类和遗迹化石等底栖生物。根据建始黄岩和......