题 名：Review of the microfossil assemblage from the late mesoproterozoic ruyang group in shanxi,china(论山西中元古代晚期汝阳群微体化石组合)
关键词：Eukaryote;late Mesoproterozoic;the Ruyang Group;Shanxi
作 者：Yin Leiming;Yuan Xunlai (尹磊明，袁训来)
年卷期：2003年20卷1期
页 码：39-46
文 摘：外文摘要
ntil now, the convincingly oldest fossil record of ukaryotes is of large sphaeromorphic acitarchs from the Chuanlinggou Formation ( 1800-1900Ma ) , China. In the last two decades, abundant sphaeromorphic acritarchs, canthomorphi