%0 Journal Article
%T The oldest known dinoflagellates: Morphological and molecular evidence from Mesoproterozoic rocks at Yongji, Shanxi Province<br>The oldest known dinoflagellates： Morphological and molecular evidence from Mesoproterozoic rocks at Yongji, Shanxi Province
%A MENG Fanwei
%A ZHOU Chuanming
%A YIN Leiming
%A CHEN Zhilin & YUAN Xunlai Nanjing Institute of Geology
%A Palaeontology
%A Chinese Academy of Sciences
%A Nanjing
%A China
%A Organic Geochemistry Laboratory of Geological Academy
%A Shengli Oil Field
%A Dongying
%A China
%A <br>MENGFanwei
%A ZHOUChuanming
%A YINLeiming
%A CHENZhilin
%A YUANXunlai
%J 科学通报(英文版)
%D 2005
%I 
%X Abundant and well-preserved organic-walled microfossils including acanthomorphic acritarchs have been found in Mesoproterozoic Beidajian Formation in the Yongji area of Shanxi Province, North China. The morphological and ultrastructural features of these acanthomorphic acri-tarchs resemble living dinoflagellates (e.g. double-walled and polygonal structures), which leads to the interpretation of these fossils as probably the oldest dinoflagellates. The detec-tion of dinosterane, a dinoflagellate biomarker, from pyro-lytic product of these fossils further supports the morpho-logical inference. This finding is consistent with molecular clock estimate that dinoflagellates may have diverged 700 to 900 million years (Ma) before previously known fossil re-cord.
%K Mesoproterozoic
%K Beidajian Formation
%K acanthomorphic acritarch
%K dinoflagellate
%K dinosterane<br>腰鞭毛虫
%K 形态学
%K 中元古代
%K 化石
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=E8DC722202BCBAE2C786DF4545923598&yid=2DD7160C83D0ACED&vid=771152D1ADC1C0EB&iid=59906B3B2830C2C5&sid=2C05A9EACD668BFF&eid=302799463F713260&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=29