Carnian (Late Triassic) Ammonoid Biostratigraphy in Luoping County, Eastern Yunnan Province, China
LI Yan,SUN Zuoyu,SUN Yuanlin,JIANG Dayong,HAO Weicheng
Acta Scientiarum Naturalium Universitatis Pekinensis . 2013, (3): 471 -479 .