| 飘泊海百合类在我国三叠系的首次发现及其意义 |
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| 引用本文： | 王传尚,汪啸风,陈孝红,程龙.飘泊海百合类在我国三叠系的首次发现及其意义[J].古生物学报,2007,46(3):334-339. |
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| 作者姓名： | 王传尚 汪啸风 陈孝红 程龙 |
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| 作者单位： | 1. 宜昌地质矿产研究所,湖北宜昌,443003
2. 德国壳灰岩博物馆,Ingelfingen D-74653 |
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| 基金项目： | 中国地质调查局地质调查项目
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中国科学院南京地质古生所研究所现代古生物学和地层学国家重点实验室基金 |
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| 摘 要： | 产于贵州关岭三叠系营浮游生活的漂泊海百合类(roveacrinids)是该类化石在我国的首次发现,描述其中2种:Osteocrinus cf.virgatus和Osteocrinus spinosus。Osteocrinus的形态是以萼部为中心、由位于中背骨之上的5块辐板生长出5个一级腕,从5个一级腕的第2个腕骨后再分出10个二级腕,共同构成一个纤巧的辐射对称的身体结构。鉴于辐板外侧中上部的韧带凹口与冠部中轴近于平行,腕与冠部的中轴近于垂直联结,表明Osteoc-rinus的形态与Saccocoma tenella(Goldfuss)雷同,其生活方式应与之类似,为口面向上的浮游生活方式。
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| 关 键 词： | 漂泊海百合类 Osteocrinus 三叠系 关岭 贵州 |
| 修稿时间： | 2007-04-25 |
THE FIRST DISCOVERY OF TRIASSIC ROVEACRINIDS IN CHINA AND ITS SIGNIFICANCE |
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| Hans Hagdorn,WANG Chuan-shang,WANG Xiao-feng,Hans Hagdorn,CHEN Xiao-hong,CHENG Long.THE FIRST DISCOVERY OF TRIASSIC ROVEACRINIDS IN CHINA AND ITS SIGNIFICANCE[J].Acta Palaeontologica Sinica,2007,46(3):334-339. |
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| Authors: | Hans Hagdorn WANG Chuan-shang WANG Xiao-feng Hans Hagdorn CHEN Xiao-hong CHENG Long |
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| Institution: | 1 Yichang Institute of Geology and Mineral Resources , Yichang 443003; 2 Muschelkalkrnuseurn ,D- 7 4653 Ingel fingen,Gerrnany |
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| Abstract: | The roveacrinids,which were discovered for the first time in China,are reported in this paper.Their fossils were found on the bedding plane of black micrites of the late Triassic lower Xiaowa Formation in Guanling County,Guizhou.Two species,i.e.,Osteocrinus cf.virgatus Kristan-Tollmann,1970 and Osteocrinus spinosus Kristan-Tollmann,1970,are described.The taphonomy of Osteocrinus showing anoxic environment for its preservation,indicates that Osteocrinus is a pelagic crinoid.It can be concluded with confidence that Osteocrinus and Saccocoma tenella have similar life style because they are similar in morphology. |
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| Keywords: | roveacrinids Osteocrinus Triassic Guanling Guizhou |
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