| 贵州都匀下泥盆统蟒山群Zosterophyllum australianum(澳大利亚工蕨)新材料及其古地理意义* |
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| 引用本文： | 周志强,赵景宇,王嘉树,吴成洋,肖彪,黄璞.贵州都匀下泥盆统蟒山群Zosterophyllum australianum(澳大利亚工蕨)新材料及其古地理意义*[J].古地理学报,2022,24(3):479-492. |
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| 作者姓名： | 周志强 赵景宇 王嘉树 吴成洋 肖彪 黄璞 |
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| 作者单位： | 1.宿州学院资源与土木工程学院,安徽宿州 234000;2.北京大学地球与空间科学学院,北京 100871;3.中国科学院南京地质古生物研究所,江苏南京 210008 |
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| 基金项目： | 国家级大学生创新创业训练计划项目;宿州学院教授(博士)启动基金项目;中国科学院战略性先导科技专项;国家自然科学基金 |
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| 摘 要： | Zosterophyllum(工蕨属)是早期陆生植物的代表性类群之一,全球广泛分布。Z.australianum(澳大利亚工蕨)产自华南和澳大利亚,是东北冈瓦纳古植物地理区系的典型分子。文中描述了产自贵州都匀包阳剖面蟒山群中的Z.australianum新材料。该标本的孢子囊具短柄,呈椭圆形或扇形,宽2.6~4.1 mm,高可达3.9 mm,加厚带宽约0.6 mm,紧密螺旋排列形成孢子囊穗,与云南文山早泥盆世坡松冲植物群中的Z. australiaunum极为相似。依据目前对Z. australianum时代延限的认识,并结合蟒山群其他植物属种的发现(如Adoketophyton subverticillatum),推断该群下段的时代为早泥盆世布拉格期。Z. australianum在蟒山群中的发现,扩展了该植物的地理分布范围,反映出蟒山群中的植物组合与坡松冲植物群存在一定联系。
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| 关 键 词： | 华南板块 早泥盆世 蟒山群 Zosterophyllum(工蕨属) 物种交流 |
| 收稿时间： | 2022-02-11 |
New material of Zosterophyllum australianum from the Lower Devonian Mangshan Group in Duyun,Guizhou and its palaeogeographic implications |
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| Zhou Zhi-Qiang,Zhao Jing-Yu,Wang Jia-Shu,Wu Cheng-Yang,Xiao Biao,Huang Pu.New material of Zosterophyllum australianum from the Lower Devonian Mangshan Group in Duyun,Guizhou and its palaeogeographic implications[J].Journal of Palaeogeography,2022,24(3):479-492. |
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| Authors: | Zhou Zhi-Qiang Zhao Jing-Yu Wang Jia-Shu Wu Cheng-Yang Xiao Biao Huang Pu |
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| Institution: | 1.School of Resources and Civil Engineering, Suzhou University,Anhui Suzhou 234000,China;2.School of Earth and Space Sciences,Peking University,Beijing 100871, China;3.Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China |
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| Abstract: | Zosterophyllum is one of the representative taxa of early land plants,and has a worldwide distribution. Z. australianum occurred in South China and Australia,and is a typical species of the Northeastern Gondwana Phytogeographic Unit. New material of Z.australianum from the Mangshan Group of the Baoyang section in Duyun,Guizhou is described here. The plant is characterized by sporangia with a short stalk,which are closely arranged forming a spike,and the sporangia are elliptical or fan-shaped,ca. 2.6~4.1 mm wide and up to 3.9 mm high,and the thickened border is ca. 0.6 mm wide. These features are closely comparable to those of Z. australianum from the Early Devonian Posongchong flora of Wenshan,Yunnan. On the basis of the temporal range of Z. australianum and other plants such as Adoketophyton subverticillatum from the Mangshan Group,the lower part of this group is suggested to be the Pragian of the Early Devonian in age. The discovery of Z. australianum from the Mangshan Group extends the geographic distribution of this species,and adds evidence to a certain relationship between the plant assemblages from the Mangshan Group and the Posongchong flora. |
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| Keywords: | South China Block Early Devonian Mangshan Group Zosterophyllum species communication |
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