A potential GSSP for the base of the uppermost Cambrian stage, coinciding with the first appearance of Lotagnostus americanus at Wa'ergang, Hunan, China

被引：18
作者：
Peng, Shanchi [1 ]
Babcock, Loren Edward [2 ,3 ]
Zhu, Xuejian [1 ]
Zuo, Jingxun [1 ]
Dai, Tao [1 ]
机构：
[1] Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
[2] Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA
[3] Lund Univ, Dept Geol, SE-22362 Lund, Sweden
来源：
GFF | 2014年 / 136卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Cambrian; Stage; 10; GSSP; first appearance datum; agnostoid; Lotagnostus americanus; TRILOBITES; BIOSTRATIGRAPHY; SCANDINAVIA;
D O I：
10.1080/11035897.2013.865666
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The first appearance datum (FAD) of the cosmopolitan agnostoid trilobite Lotagnostus americanus is a widely used marker for defining the base of the uppermost stage of the Cambrian System. Detailed field study on the L. americanus-bearing interval of the Wa'ergang section, Hunan, China, reveals the FAD of L. americanus to be 29.65m above the base of the Shengjiawan Formation. This horizon is close to the lowest known occurrences of the intercontinentally distributed polymerid trilobites Hedinaspis regalis and Charchaqia norini. The section has strong potential as a candidate for defining a global standard stratotype-section and point marking the base of provisional Stage 10.
引用
收藏
页码：208 / 213
页数：6
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