Author Affiliations +
ANDRZEJ BALINSKI,1 SUN YUANLIN,2 A. J. BOUCOT3
1Instytut Paleobiologii, Polska Akademia Nauk, ul. Twarda 51/55, PL-00-818, Warsaw, Poland, balinski@twarda.pan.pl
2Department of Geology, Peking University, Beijing 100871, China, ysun@geoms.geo.pku.edu.cn
3Department of Zoology, Oregon State University, Corvallis, 97331-2914, U.S., boucota@bcc.orst.edu