河南晚石炭世太原组的一些四射珊瑚  

SOME RUGOSE CORALS FROM LATE CARBONIFEROUS TAIYUAN FORMATION OF HENAN

作　　者：赵嘉明[1] 梁湘沅 

机构地区：[1]中国科学院南京地质古生物研究所 [2]河南煤田地质三队

出　　处：《古生物学报》1989年第4期488-494,575,共7页Acta Palaeontologica Sinica

摘　　要：河南晚石炭世太原组为一套海陆交互相的含煤地层,在灰岩层中含有一些保存较好的四射珊瑚化石,过去从未报道。本文记述的四射珊瑚化石是由笔者之一梁湘沅近年来在河南巩县、鹤壁及永城地区的太原组钻孔内采得的。经鉴定有4属6种1未定种,其中5新种,它们是:Lopholasma cratoseptatatum sp.nov,Lophocarinophyllum karpinskyi Fomichev,L.misticarinum sp.nov.,L.tenuiseptatum sp.nov.,L.sp.,Tachylasma carinum sp.nov.,yakovleuiella raridissepta sp.nov.。以上珊瑚中,Lopholasma最早出现在北美中泥盆统,后见于亚洲石炭系(Hill,1981),The fossil rugose corals described in this paper were collected from the limestones in some boreholes of the Upper Carboniferous Taiyuan Formation in Gongxian, Hebi and Yongcheng districts, Henan. There are totally 4 genera and 6 species (including 5 new species), namely: Lopholasma cratoseptatum sp. nov., Lophocarinophyllum karpinskyi Fomichev; L. misticarinum sp. nov., L. tenuiseptatum sp. nov., Tachylasrna carinum sp. nov. and Yakovleviella raridissepta sp. nov. Among the four genera, Lopholasma and Tachylasma are first found in the coal-bearing strata of China; Lophocarinophyllurn karpinskyi Fomichev is known to occur in the Upper Carboniferous of the Donetz Basin, while Yakovleviella occurs in the Upper Carboniferous of the Donetz Basin as well as in the Maping and Taiyuan Formations of Guizhou and Shanxi, China. Description of New Species Family Stereolasmatidae Fomichev, 1953 Genus Lopholasma Simpson, 1900 Lopholasma cratoseptatum sp. nov. (P1. Ⅰ, fig. 1; text-fig. 1) Diagnosis: Septa strongly thickened and mixed. Description: Corallite solitary-small, conical, measuring 4mm in diameter. Marginal ste- reozone 0.3—0.6 mm in thickness. Septa of one order, totally 15 in number, with 6 in cardinal quadrant and 9 in counter quadrant, strongly thickened and mixed in inner part and extending to the center, fibronormal in fine skeletal structure; cardinal septum shortened; 2 alar septa extending to center and connected with counter septum. A few carinae observable on sides of septa. Remarks: This new species may be compared with Lopholasma carinatum Simpson 1900, but in the latter, the septa are thinned, the carinae are slightly developed and the cardinal fossula is comparatively developed. Horizon and Locality: Upper Carboniferous Taiyuan Formation; Chenhetuo of Longgong prospecting district, Hebi City, Henan. Family Lophophyllidae Grabau, 1928 Genus Lophocarinophyllum Grabau, 1922 Lophocarinophyllum misticarinum sp. nov. (P1. Ⅰ, fig. 4; text-fig. 2) Diagnosis: Lateral carinae developed, in the shape of sho

关 键 词：晚石炭世 太原组 四射珊瑚 

分 类 号：Q915.813.4[天文地球—古生物学与地层学]