安徽巢湖狮子口剖面上泥盆统五通组植物再研究  

Revisiting the plant fossils from the Upper Devonian Wutong Formation at the Shizikou section of Chaohu,Anhui Province

作　　者：黄璞 张小乐[1] 王嘉树 傅强[1] 王雪莲[3] 熊聪慧 HUANG Pu;ZHANG Xiao-le;WANG Jia-shu;FU Qiang;WANG Xue-lian;XIONG Cong-hui(Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China;School of Earth and Space Sciences,Peking University,Beijing 100871,China;Key Laboratory of Desert and Desertification,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China;Key Laboratory of Mineral Resources in Western China(Gansu),School of Earth Sciences,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]中国科学院南京地质古生物研究所,南京210008 [2]北京大学地球与空间科学学院,北京100871 [3]中国科学院沙漠与沙漠化重点实验室,中国科学院西北生态环境资源研究院,兰州730000 [4]甘肃省西部矿产资源重点实验室,兰州大学地质科学与矿产资源学院,兰州730000

出　　处：《古生物学报》2023年第2期245-259,共15页Acta Palaeontologica Sinica

基　　金：国家自然科学基金(41802003);江苏省自然科学基金(BK20181108);中国科学院战略性先导科技专项(B类)(XDB26000000)联合资助。

摘　　要：五通组广泛分布于长江下游地区苏、浙、皖一带。近几十年的古植物学研究工作,使得五通植物群成为全球晚泥盆世属种最为丰富的植物群之一。安徽巢湖狮子口剖面的五通组出露良好,植物化石丰富。然而,正式描述及图示的植物仅包括石松类Bothrodendron anhuiense Cai et Wu、Sublepidodendron grabaui(Sze)Wang et Xu、Sublepidodendron songziense Chen和楔叶类Sphenophyllum lungtanense Gothan et Sze。本文对狮子口剖面五通组中的晚泥盆世植物化石进行了再研究,计有石松类植物Stigmaria ficoides Brongniart、Stigmaria rugulosa Gothan、Sublepidodendron songziense、Sublepidodendron grabaui和Lepidostrobophyllum sp.,以及楔叶类植物Eviostachya hoegii Stockmans和Hamatophyton verticillatum Gu et Zhi。一些石炭纪的全球常见植物如Bothrodendron Lindley et Hutton、Sphenophyllum Brongniart及Sublepidodendron(Nathorst)Hirmer等已出现在狮子口剖面上泥盆统五通组中,表明华南很可能是这些类群辐射与演化的中心之一。The Wutong Formation is widespread in the lower reaches of the Yangtze River,including Jiangsu,Zhejiang and Anhui provinces.Paleobotanical studies during the past decades have revealed that the Wutong flora is one of the most species-rich Late Devonian floras.The Wutong Formation at the Shizikou section of Chaohu,Anhui Province is well-exposed and bears rich plant fossils.Numerous plants have been previously reported from this section,including Bothrodendron anhuiense Cai et Wu,Bothrodendron cf.kiltorkense,Eolepidodendron wusihense(Sze)Wu et Zhao,Eolepidodendron cf.wusihense,Hamatophyton verticillatum Gu et Zhi,Lepidodendropsis dzungariensis Sze,Lepidodendropsis hirmeri Lutz,Lepidostrobus grabaui Sze,Sphenophyllum lungtanense Gothan et Sze,Sphenophyllum pseudotenerrimum Sze,Stigmaria radiatopunctata Gothan et Sze,Sublepidodendron mirabile(Nathorst)Hirmer,Aphyllopteris sp.,Archaeopteris sp.,Bothrodendron sp.,Hamatophyton?sp.,Paleostachya sp.,Rergeria?sp.,Rhodea?sp.,Sphenopteridium sp.,and Sublepidodendron sp.However,most of these plants are only listed in general introductions of the Shizikou section without illustrations and formal descriptions.Therefore,their exact occurrences remain unverified.Three lycopsids,i.e.,Bothrodedron anhuiense,Sublepidodendron grabaui(Sze)Wang et Xu,and Sublepidodendron songziense Chen,and one sphenopsid,i.e.,Sphenophyllum lungtanense are the only plants from the Shizikou section that have been illustrated in previous publications.In this paper,we describe the lycopsids,including Stigmaria ficoides Brongniart,Stigmaria rugulosa Gothan,Sublepidodendron songziense,Sublepidodendron grabaui and Lepidostrobophyllum sp.,and the sphenopsids,including Eviostachya hoegii and Hamatophyton verticillatum,from the Shizikou section.The new materials show that Sublepidodendron songziense and Sublepidodendron grabaui are the two dominant components in the Wutong Formation at the Shizikou section.These two species are different from each other in shape and size of leaf bases.Stigmaria ficoides and Sti

关 键 词：华南板块 五通组 狮子口剖面 石松类 楔叶类 植物群落 

分 类 号：Q914.2[天文地球—古生物学与地层学]