The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life - Xian-guag Hou, Richard Aldridge, Richard J.. Aldridge, Jan Bergstrom, David J. Siveter, Derek Siveter, Xiang-Hong Feng - Google Books

http://books.google.de/books?id=QOIFgqC4X_sC&printsec=frontcover

The Chengjiang biota is one of the most remarkable fossil discoveries ever made. Among the hills and lakes of Yunnan Province, South China, deposits of ancient mudstone, 525 million years old, have yielded a spectacular variety of exquisitely preserved…