贵州盘县新塘晚石炭世的四射珊瑚  

UPPER CARBONIFEROUS RUGOSE CORALS FROM XINTANG, PANXIAN, GUIZHOU

作　　者：李昌全 赵嘉明[2] 

机构地区：[1]贵州石油勘探指挥部地质科学研究所,贵阳550001 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》1993年第6期765-772,820,共8页Acta Palaeontologica Sinica

摘　　要：文章通过贵州盘县新塘原下二叠统下部紫松阶珊瑚化石的分析,将该地层划归上石炭统上部.描述上石炭统威宁阶、过岩阶和紫松阶的四射珊瑚6属7种,其中5新种.通过对这些珊瑚的形态构造进行了剖析,略述了该地区在晚石炭世的环境特征.The Upper Carboniferous rugose corals under study were collected from Xintang of Panxian, Guizhou, with 6 genera and 7 species (including 5 new species), namely. Fomichevella panxianensis sp. nov., Anfractophyllum ivanoviforme sp. nov., Arctophyllum mapingense (Lee et Yu), Kionophyllum xintangense sp. nov. Lytvopnyllum raricystosum sp. nov., Ivanovia podolskiensis Dobrolyubova and I. xintangensis sp. nov., in association with the fusulinids Sphaeroschwagerina and Triticites. These corals are identical with or closely related to those from the Weiningian and Mapingian Upper Carboniferous in South and Southwest China, and also closely related to those from the Kasimovian of former USSR. and Poland. Based on morphological characters there are solitary, fasciculate and massive types of corals, The massive corals account for over 42% the total number of species in this area, representing an ecotype of corals growing in the beachy and shallower water environments with a strong motive power. Fomichevella panxianensis sp. nov. (Pl. I. figs. 1a. b) Diagnosis Fasciculate corallum with corallites measuring 16-20mm in diameter. Septa (30-31)+(30-31) in number; major ones occupying about 1/3 the diameter of corallites; minor ones about 1/6-1/5 as long as the major ones. Dissepimentarium narrow, occupying about 1/6-1/5 the radius of corallites, and composed of coneentrical, herringbone or angular dissepiments. Tabulae incomplete, horizontally arched and slightly concave in middle part. Remarks In the characters of tabulae this species is similar to Fomichevella orientalis (Stuckenberg), but in the latter, the corallites are smaller, the septa are slightly thickened in tabularium and are shorter and less in number. Horizon and Locality Upper Carboniferous Guoyan Formation; Xintang, Panxian, Guizhou. Ivanovia xintangensis sp. nov. (Pl. I, figs. 4a, b) Diagnosis Corallum compound, massive. Corallites connected with cystosa. Distance between two adjacent corallites about 6-11mm. Sept

关 键 词：四射珊瑚 晚石炭世 珊瑚虫纲 

分 类 号：Q915.813.4[天文地球—古生物学与地层学]