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J Integr Plant Biol, 2001, 43 (7): 742-749, Research Article
New Macroalgal Fossils from Middle Cambrian Kaili Biota in Guizhou Province, China (in English)
YANG Rui-Dong, MAO Jia-Ren and ZHAO Yuan-Long

Abundant and well-preserved remains of noncalcareous algae and soft-bodied metazoans were collected from Middle Cambrian Kaili biota in Taijiang county, Guizhou Province, China. These remains provide further evidence for the wide geographic distribution of many Burgess Shale taxa. Among the algae, 5 genera (including two new genera) and 5 species are described. They are Marpolia spissa Walcott, Acinocricus stichus Conway Morris and Robison, Udotealga erecta Yang, Eosargassum sawata Yang, and Rhizophyton zhaoyuanlongii Yang. Contrasting the macroalgal fossil assemblage in the Kaili biota with one in the Burgess Shale biota, it is clear that similarity of the Kaili biota and the Burgess Shale biota is reflected by the same content of not only the soft-bodied metazoans, but also the noncalcareous algae.

杨瑞东1,2 毛家仁2  赵元龙2

(1. 中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳550002;
2. 贵州工业大学资源与环境学院,贵阳550003)

摘要:贵州省台江县中寒武世凯里生物群含有丰富的非钙质藻类和具有软躯体后生动物化石 ,它为布尔吉斯页岩型生物群在世界广泛分布提供了更有力的证据。在生物群的宏观藻类中描述了 5个属 5个种 ,包括 2个新属。它们是Marpoliaspissa Walcott、AcinocricusstichusConwayMorrisandRobison、UdotealgaerectaYang、EosargassumsawataYang和RhizophytonzhaoyuanlongiiYang ,并且将凯里生物群中的宏观藻类化石组合与加拿大布尔吉斯页岩生物群中的宏观藻类进行了对比 ,发现两个生物群不仅具有相似的动物化石组成 ,而且宏观藻类化石组成也很相似。

关键词: 贵州;中寒武世;凯里生物群;宏观藻类化石

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