【摘要】 广西宜山地区上二石炭统与下二叠统界线附近的珊瑚由下而上可划分为5个组合:(1)Paracarruthersella-Carinthiaphyllum carnicum(Pa-Ca)组合带,(2)Pseudocarniaphyllum-pseudoza-hrentoidesmapingensis-Antheria polygonalis(Ps-Pm-A)组合带,(3)Chusenophyllum-Polvthecalisnephelophylloides-Nephelophyllum yunnanense(Ch-Pn-N)组合带,(4)Szechuanophyllum-Polythecalispulchra(Sz-Pp)组合带,(5)Yatsengia ishanensis-Wentzellophyllum kueichozoense(Y-Wk)组合带.提出本区以Ch-Pn-N组合带的开始作为下二叠统的底界.文末记述珊瑚化石13新种.更多还原

【Abstract】 The Carboniferous-Permian boundary strata in Yishan County of Guangxi are composed ofuniform carbonate facies rocks and contain greatly abundant fossil corals. From 1983 to 1984,thewriters made a systematical study of the fossil corals between Upper Carboniferous Triticites zoneand Lower Permian Misellina claudiae zone in Yishan, Guangxi. A total of 51 genera with 97species (Table 1)are recorded in this area,among which 13 new species are described. The 5 coralassemblage-zones were established based on the Carboniferous-Permian boundary coral fauna inthe Manaoshan-Wuguiling section. The present paper deals with these coral zones in order to makecorrelations with other regions both at home and abroad. I .CORAL ASSEMBLAGE-ZONES 1. Paracarruthersella-Carinthiaphyllum carnicum (Pa-Ca) assemblage-zone This zone is mainly characterized by those genera with stereoplasm axial structure and the Cy-athopsidae,including Paracarruthersella,Carinthiaphyllum carnicum, Carniaphyllum, Kionophyl-litm, Lophophyllidium,Darwasophyllum, Pseudozaphrentoides,Caninia,etc. ,with a thickness of更多还原