Information on latest early Olenekian (latest Smithian) ammonoids is available apparently from only seven regions of the......

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......

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

The holotype of Yangtzedonta Yu, 1985 and itstype species, Y. primitiva Yu, 1985, is an incomplete specimenof Xianfengel......

Affected by paleogeographic position, paleoclimatic condition and depositional environments, the increase of the Early-M......