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贵州剑河八郎“清虚洞组”Kutorgina Billings,1861的初步研究

A PRELIMINARY STUDY OF KUTORGINABILLINGS,1861 FROM THE CAMBRIAN “TSINGHSUTUNG FORMATION”OF GUIZHOU,CHINA

【Author in Chinese】 刘玉娟赵元龙刘玉莹毛永琴

【Author】 LIU Yu-juan;ZHAO Yuan-long;LIU Yu-ying;MAO Yong-qin;College of Resources and Environmental Engineering,Guizhou University;School of Earth Sciences and Resources,China University of Geosciences;College of Earth Sciences,Jinlin University;Institute of Mountain Resources,Guizhou Academy of Science;

【Institution】 贵州大学资源与环境工程学院中国地质大学(北京)地球科学与资源学院吉林大学地球科学学院贵州省山地资源研究所

【Abstract in Chinese】 小嘴贝亚门顾脱贝科顾脱贝属(Kutorgina Billings,1861)属于碳酸钙质壳非铰合类腕足动物,于1861年建立,含20个种,最早出现于传统的早寒武世,绝灭于中寒武世中期,广泛分布于北美洲及亚洲。贵州剑河八郎"清虚洞组"产顾脱贝两个种:犰狳顾脱贝(相似种)(K.cf.cingulata)及松山顾脱贝(新种)(K.songshanensis sp.nov.)。K.cf.cingulata与北格陵兰的K.cingulata在轮廓、壳饰上相似,主要区别是后者个体略大,少数背壳标本可见中隆;K.songshanensis sp.nov.具有与其他顾脱贝明显不同的特点——同心层稀少并常见三条同心层。"清虚洞组"顾脱贝的发现及研究,不仅与凯里组的顾脱贝形成演化链,而且为研究全球顾脱贝的演化及早寒武世腕足动物的辐射和多样性增添了新材料。

【Abstract】 The brachiopod genus Kutorgina Billings,1861 contains 20species and has a range of Early to mid-Middle Cambrian.It is widely distributed in North America and Asia.Two species,K.cf.cingulata and K.songshanensis sp.nov.,were recovered from the "Tsinghsutung Formation"at Jianhe County,Guizhou.K.cf.cingulatais similar to K.cingulatafrom central North Greenland in outline and ornamentation,but differs from the latter by being slightly larger and by lacking a dorsal median fold.K.songshanensis sp.nov.distinctly differs from other species of Kutorginain having less well developed concentric lamellae.The discovery of Kutorgina from the "Tsinghsutung Formation"establishes an evolutionary link with species of the genus from the Kaili Formation and also provides additional evolutionary insights about the genus and Lower Cambrian brachiopods more generally.

【Keywords in Chinese】 顾脱贝腕足动物“清虚洞组”寒武系剑河贵州
【Key words】 Kutorginabrachiopods"Tsinghsutung Formation"CambrianJianheGuizhou Province
【Fund】 国家重点基础研究发展规划项目(973)(2013CB835002,2015FY310100);贵州大学研究生创新基金(研理工2015061);贵州省古生物研究中心建设基金(黔科合Z字[2014]4003号);国家重点自然科学基金(41330101);国家自然科学基金(41172005)联合资助
  • 【CLC code】Q915
  • 【Downloads】109
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