Late Precambrian cyphomegacritarchs from the Liulaobei Formation, Bagong Shan Mountain, near Shouxian, Eastern China and their mathematical simulation

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  • 中国東部安徽省八公山地域における先カンブリア時代後期の劉老碑層から産出したCyphomegacritarchsとそれらの数学的シミュレーション
  • 中国東部安徽省八公山地域における先カンブリア時代後期の劉老碑層から産出したCyphomegacritarchsとそれらの数学的シミュレーション〔英文〕
  • チュウゴク トウブ アンキショウ ヤコウサン チイキ ニ オケル セン カンブ

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Abstract

Various metazoan fossils have been found from the Jiuliqiao Formation of Sinian System, and from the Liulaobei Formation of Qingbaikou System in the district of Mt. Bagong near Shouxian County, Anhui Province, China. The radiometric age of the former is 738.5 Ma (K-Ar), and that of the latter is 840 Ma (Rb-Sr). These fossils are associated by algal fossils, called as Huainan Biota. In this paper the second author divided the Huainan Biota into two horizons, and summarized fossil components of them. And the first author of this paper have ever described two new genera and three new species among the specimens of cyphomegacritarchs found from the Liulaobei Formation, with the mathematical simulation of their form in 1986. He redescribed them with addition of some discussions.

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