Article
Precambrian animal diversity: putative phosphatized embryos from the Doushantuo Formation of China.
Proceedings of the National Academy of Sciences of the United States of America - 25 Apr 2000
Chen J Y, Oliveri P, Li C W, Zhou G Q, Gao F, Hagadorn J W, Peterson K J, Davidson E H
Abstract excerpt
Putative fossil embryos and larvae from the Precambrian phosphorite rocks of the Doushantuo Formation in Southwest China have been examined in thin section by bright field and polarized light microscopy. Although we cannot completely exclude a nonbiological or nonmetazoan origin, we identified what appear to be modern cnidarian developmental stages, including both anthozoan planula larvae and hydrozoan embryos....
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