湖北郧西范家坪早石炭世四射珊瑚

RUGOSE CORALS FROM EARLY CARBONIFEROUS OF FANJIAPING, YUNXI, HUBEI

本文对东秦岭南部湖北郧西地区早石炭世四射珊瑚进行了研究,系统描述了11科中的24属和39种,其中包含2新属和21新种。本区早石炭世四射珊瑚拟划分为4个组合带:范家坪组上部Palaeosmilia-Lithostrotion组合带,下部Yuanophyllum组合带。袁家沟组上部Shennongia majus组合带,下部Zaphrentoides组合带。范家坪组是新建的组名。文中也讨论了Cystophrentis的分布时限,及其与Shennongia的亲缘关系。此外,Neoclisiophyllum在本区与岩关期的Shennongia共生,出现的时间早于华南各地。

This paper makes a study of the lower Carboniferous rugose corals from Yunxi, Hubei, in the south of the East Qinling Mountains, with a systematical description of 24 genera, 39 species (including 21 new species and 2 new genera) separately belonging to 11 families. The lower Carboniferous corals of Fanjiaping can be divided into 4 assemblages: Fanjiaping Formation upper part: Palaeosmilia-Lithostrotion assemblage lower part: Yuanophyllum assemblage Yuanjiagou Formation upper part: Shennongia majus assemblage lower part: Zaphrentoides assemblage After studying the coral fauna, the authors have modified division and correlation of the Carboniferous in this region, with the suggestion that the Fanjiaping Formation should be established.