摘要
本文研究材料是1962年林英铴与作者在我国湖南南部临武地区(图1)早石炭世地层内收集的。该区丰宁统发育良好,化石丰富,其中以珊瑚为最盛。岩性以浅海相碳酸盐为主,夹碎屑岩,总厚1186米。本文共描述了18属2亚属,18种3亚种,其中新属2,新种7。在研究期间蒙导师俞建章教授热忱指导和帮助。在野外和室内鉴定过程中,得到林英铴老师的热心帮助和辅导。腕足类化石由刘发同志鉴定,均于此一并致谢。
The fenginian (Lower Carboniferous) seraes in Linwu district is well developed. Fossils are plentiful and most of them are corals. In their lithology they are compo-sedm aily of carbonates in neritic facies, including elaster rocks. The total thickness add up to 1186 metres. From bottom to top, they are divided into five parts: Mengk-ungao zu, Linjia-tang zu, Shihtengtze zu, Tzoshui zu and Tzemenchias zu. The fossiliferous zones of the Fenginian built up by Yu Jianzhang (1931) are, from below to above, named Cystophrentis zone, pseudourainia zone, Thysanophyllum zone and Yuanophyllum zone, which might be suitable for this district. In the present paper 18 genera, asubgenra, 18 species, 3 variant species are described, of which 2 genus, 7 species are considered as new. In the upper part of Shihtengtze member exist a great quantity of late Visean corals, such as Aulina furcata, Carcinophyllum vanghani, Arachnolasma sinense, Kueichouphyllum heishihkuanense, K. sinense, Heterocaninia tholusitabulata, Yuanophyllum - iongsepta turn, etc, and there is something mixed with Thysanophyllum. In the new genus Linwuphyllum (with Thysanophyllum in intergro-wth) the rnner structture shows a close similarity to Kueichouphyllum, and the former may, in the process of systematic generation, possibly be the ancestor of the latter. Kassinella and Stelechophyilum are discovered for the first time in Cystophrentis zone, the lower part of Mengkungao (or of Tournacian) of Linwu. These two genera are Tournacian fossils from Kazakhstan and Siberia of the Soviet Union. It can be inferred that the South China sea and East Eurpoe were probably linked up together in Tournacian age.Linwuphyllum Yan (gen. nov. )Type speciess Linwuphyllum platitabulatum Yan (gen. et sp. nov. ) .Diagnosis. Coral simple, conico-cylindrical. Middle in size. Septa of two orders, tubularium thickened at the cordinal quadrant. A few of major septa converging at the centre to form an unsteaby columella. Cardinal fossula clear. Disseliments concertri-caliy arranged. Tabulae quite complate, gradually inclining towards two sides. Disse-pimentraium rather broad.Remarks. This new genus closely resembles Kueichouphyllum, but the latter is large in size, the septa numerous, the tabulae short and small, and the dissepimends both small and dense. Bothrophyllum may be compared with the new genus, but the latter has fewer septa (in comparison with the new genus of the same diameter, the member of its septa is 2/3 of that of the former) . It obviously differe from the new genus in the features of narrow dissepimentraium, incomplete tabulae and so on.Paracaophylluw Yan (geh. now. )Type species: paracanophyllum Xianghualingense Yan (gen. et sp. nov. ) . biagnosis: Teh new genus ismilar to Caninophyllum, but corallum small, a few of septa, dissepimental znoe rather narrow, and tabulae branching. In eveny stage ofi ils development the cardinal fossula remains prominent.Remarks, The new genus and Caninia are much a like, but the difference is that in the latter the septa are shortened in the stage of full growth, the tabulae fairly complete and the inner ends of the cardinal fossula are open, which in the former the major septa are loog, the tadulae forked and the candjnalfossula jt closed.
出处
《吉林大学学报（地球科学版）》
EI
CAS
1982年第3期29-42,181-186,共20页
Journal of Jilin University：Earth Science Edition
