| Institution: | PENG ShanChi1,2,Loren E. BABCOCK3,ZUO JingXun1,4,LIN HuanLing1,ZHU XueJian1,5,YANG XianFeng1,QI YuPing1,Gabriella BAGNOLI6 & WANG LongWu71 Nanjing Institute of Geology , Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China,2 State Key Laboratory of Paleobiology , Stratigraphy,3 School of Earth Sciences,The Ohio State University,125 South Oval Mall,Columbus,OH 43210,USA,4 Henan Institute of Geological Survey,Zhengzhou 450007... |
| Abstract: | Exposed in natural outcrops near the Duibian Village, Jiangshan County, Zhejiang Province, China, the Duibian B section is proposed as the boundary stratotype for the base of an unnamed stage termed provisionally Cambrian Stage 9. The proposed position of the GSSP is 108.12 m above the base of the Huayansi Formation, at a horizon coinciding with the first appearance of the cosmopolitan agnostoid trilobite Agnostotes orientalis. This horizon coincides also with the first appearance of the cosmopoli-tan polym... |
