广东连阳谷田组植物化石及其意义

SOME FOSSIL PLANTS FROM GUTIAN FORMATION OF LIANYANG,GUANGDONG PROVINCE AND THEIR SIGNIFICANCE

本文描述和讨论广东连阳地区谷田组地层的化石共14属18种,即:Paracalamites sp.,Annularia pingloensis(Sze)Gu er Zhi、Lobatannularia cathaysiana Yao、L.multifoliaKon'on et Asama、L.sp.、Schizonerua wangtangiana sp.nov.、Pecopteris hemitelioidesBrongn.、P.valida sp.nov.、Cladophlebis varia sp.nov.、Danaeites guangdongensis sp.nov.、Ptychocarpus unauriculatus sp.nov.、Odontopteris plicatoides sp.nov.、Neuropteri-diopsis longovata gen.et sp.nov.、Compsopteris contracta Gu et Zhi、Gigantonoclea cra-ssa sp.nov.、Gigantopterts?nicotianaefolia Schenk、G.parvipinnulata sp.nov.和 Rhipido-psis sp.等,其中有1新属、9新种和2未定种。谷田组顶部发现了早二叠世晚期的(竹蜓)类层,下段则与下伏的茅口组假整合。植物群的地质时代为早二叠世晚期。

This paper deals with the fossil plants from Gutian Formation in Lianyang,Guangdong, totaling 14 genera and 18 species.They are:Paracalamites sp.,Annularia pinglogensis(Sze) Gu et Zhi,Lobatannularia cathaysiana Yao,L.Multifolia Kon'on et Asama,L.sp.,Schizo- neura wangtangiana sp.nov.,Pecopteris hemitelioides Brongn.,P.valida sp.nov.,Cladoph- lebis varia sp.nov.,Danaeites guangdongensis sp.nov.,Ptychocarpus unauriculatus sp.nov., Odontopteris plicatoides sp.nov.,Neuropteridiopsis longovata gen.et sp.nov.,Compsopteris contracta Gu et Zhi,Gigantonoclea crassa sp.nov.,Gigantopteris?nicotianaefolia Schenk,G. parvipinnulata sp.nov.and Rhipidopsis sp.Among them one new genus,9 new spp.and 2 undetermined spp.are described.According to the fusulinids lived in the late Early Permian era are descovered at the top of this Formation,the geological era of present flora must not be later than late Early Permian.Therefore,the geological era of Gutian Formation are certain to be the Late Early Permian.