This work was jointly sponsored by the National Natural Science Foundation of China (Grant No. 49872002);the State Science and Technology Commission of China (Grant Nos. 95-spcieal-03-3-3 and G99-A-05a); and the State Basic Research Development Project
Globular fossils from Doushantuo phosphorites at the Weng’an area are for the first time identified as a gas-trulation stage of phosphatized embryos. They are got from the fossiliferous remains after acetic acid mace...