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J4 ›› 2010, Vol. 16 ›› Issue (3): 317-326.

• 古生物学 • 上一篇    下一篇

贵州凯里生物群中的陡山沱藻

 伍孟银, 童金南, 傅晓平, 赵元龙   

  1. 1. 中国地质大学 生物地质与环境地质教育部重点实验室,武汉 430074;
    2. 贵阳学院 政教系,贵阳 550005;  3. 深圳仙湖植物园,深圳 518004;
    4. 贵州大学 资源与环境工程学院 古生物及生物成矿研究所,贵阳 550003
  • 收稿日期:2010-05-13 修回日期:2010-05-26 出版日期:2010-09-20 发布日期:2010-09-20
  • 作者简介:伍孟银,女,博士研究生,从事地层古生物研究;E-mail:wumengyinwuhan@163.com
  • 基金资助:

      国家自然科学基金项目(40672018);国家创新研究群体科学基金项目(40621002);国家973重大项目( 2006CB804601);
    贵州省科技特别基金(黔科机字[2007]4004);深圳市仙湖植物园基金

Doushantuophyton Chen et Xiao (Algae) from Kaili Biota,
Guizhou Province, China

WU Meng-Yin, TONG Jin-Nan, FU Xiao-Ping, ZHAO Yuan-Long   

  1. 1. Key Laboratory of Biogeology and Environmental Geology of the Ministry of Education, China University of Geosciences,
    Wuhan 430074, China; 2. Department of Political Education, Guiyang College, Guiyang 550005, China; 3. Xianhu Botanical Garden
    of Shenzhen City, Shenzhen 518004, China; 4. College of Resources and Environment, Guizhou University, Guiyang 550003, China
  • Received:2010-05-13 Revised:2010-05-26 Online:2010-09-20 Published:2010-09-20

摘要:

陡山沱藻Doushantuophyton Chen et Xiao是湖北秭归庙河埃迪卡拉系陡山沱组及安徽休宁埃迪卡拉系蓝田组中常见的
种群,该属先后建立了5个种:D.  lineare Chen et Xiao, 1991;D. rigidulum, Chen 1994;D. sinuolatum Hu, 1996;D. quyuani
Chen, Xiao and Yuan, 1994, emend. Xiao et al., 2002和D. cometa Yuan et al., 1999。本文对贵州凯里组苗板坡剖面和乌溜—曾家
崖剖面的30多块标本进行了详细描述,并与湖北庙河陡山沱组和安徽休宁蓝田组的陡山沱藻进行对比,结果表明,该属的
模式种D.  lineare Chen et Xiao和 D. cometa Yuan et al.的时代可延伸到寒武纪第3世(原中寒武世)凯里生物群,并成为凯里
生物群宏观藻类中的重要种群之一。也反映从埃迪卡拉纪陡山沱期至寒武纪第3世,经历了近5千多万年,特别是埃迪卡拉
纪末期的生物灭绝事件,这2种的形态结构特征没有发生明显变化,说明陡山沱藻有些种具有较强的生存竞争能力以及遗
传上的稳定性,从而表现出演化上的保守性和环境上的适应性。

关键词: 陡山沱期, 寒武纪第3世, 凯里生物群, 陡山沱藻, 遗传稳定性

Abstract:

Doushantuophyton Chen et Xiao  (algae)  is very common  in  the Ediacaran age Miaohe Biota and Lantian Flora,
including five species, D. lineare Chen et Xiao, 1991; D. rigidulum Chen, 1994; D. sinuolatum Hu, 1996; D. quyuani Chen, Xiao
and Yuan, 1994, emend. Xiao et al., 2002 and D. cometa Yuan et al. Among the species of Doushantuophyton, D. lineare Chen et
Xiao and D. cometa Yuan et al. are found in the Cambrian age Kaili Biota and are important species in this area. The Genus spans
a range of about 50 Ma from the Ediacaran Doushantuoian to Cambrian Epoch 3. Doushantuophyton Chen et Xiao, 1991 survived
the extinction event of  the  terminal Ediacaran. Moreover,  the characteristics of  thallus morphology exhibit minimal change.  Its
survival probably indicates a wide ecological tolerance and flexibility and its conserved morphology may reflects a greater fitness
for competition and a high degree of inherent genetic stability

Key words: Cambrian, Kaili Biota, Doushantuophyton, genetic stability

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