Detailed trilobite biostratigraphy across the proposed GSSP for stage 5 ("Middle Cambrian" boundary) at the Wuliu-Zengjiayan section, Guizhou, China
F. A. Sundberg,
Y. L. Zhao,
J. L. Yuan, and
J. Lin
2011
Article
Bulletin of Geosciences
86(3):423-464
Find it at: