Author Affiliations +
YUANLIN SUN,1 MA XUEPING,1 BALIŃSKI ANDRZEJ,2 YUBO ZHANG1
1Department of Geology, Peking University, Beijing 100871, China, < >, < > ylsun@pku.edu.cn maxp@pku.edu.cn
2Instytut Paleobiologii PAN, ul. Twarda 51/55, PL-00-818 Warszawa, Poland, < > balinski@twarda.pan.pl