中国硅藻化石新种和新记录种

李艳玲; 龚志军; 谢平; 沈吉

中国硅藻化石新种和新记录种

中国科学院南京地理与湖泊研究所, 南京, 210008
2. 中国科学院水生生物研究所, 武汉, 430072

基金项目:

长江中下游地区湖泊富营养化的发生机制与控制对策研究基金(KZCX1-SW-12)

国家自然科学基金(40402015、30200032)

博士后科学基金(2004036124)资助

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出版历程
- 收稿日期: 2005-05-19
- 修回日期: 2006-11-07
- 发布日期: 2007-05-24

NEW SPECIES AND NEW RECORDS OF FOSSIL DIATOMS FROM CHINA

Nanjing Institute of geography and Limnology, the Chinese Academy of Sciences, Nanjing 210008, P. R. China;
2. Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, the Chinese Academy of Sciences, Wuhan 430072, P. R. China

摘要

摘要: 在对江汉平原钻孔中的化石硅藻进行鉴定时,发现1个新种类:江汉异极藻(新种)Gomphonema jianghanensis sp.nov.,该种的主要特征为:壳面狭披针形或线性披针形,端部和基部圆形,中轴区窄。中心区宽呈横矩形,在紧靠中心区的一侧具1条很短的线纹,另一侧有时有1条很短的线纹,有时没有线纹,无孤点。壳缝呈直线,在中央区附近略弯向一侧,在极节处折向另一侧。线纹轻微放射状,中部略弯曲,在近顶端处没有线纹,在10μm内,中部具6-13条。长20-30μm,宽4-7μm。4个中国新记录属:楔异极藻属Gomphosphenia Lange-Bertalot、楔月藻属(新记录属)Cymbopleura Krammer、优美藻属Delicata Krammer、尖月藻属Encyonopsis Krammer,8个中国新记录种:微小异极藻Gomphonema minutiforme Lange-Bertalot&Reichardt、较细楔异极藻Gomphosphenia tenerrima(Hustedt)Reichardt、舌状楔异极藻Gomphosphenia lingulatiforme(Hustedt)Lange-Bertalot、瑞克舟形藻Navicula rakowskae Lange-Bertalot、北方羽纹藻岛屿变种Pinnularia borealis var.islandica Lange-Bertalot,舟形盖斯勒藻Geissleria tectissima(Lange-Bertalot)Lange-Bertalot&Metaeltin、岩生楔月藻小变种Cymbopleura rupicola var.minor Krammer和法国尖月藻Encyonopsis falaisensis(Grunow)Krammer,1个种的补充说明:中华优美藻Delicata sinensis Krammer & Metzetin。
- 化石硅藻 /
- 新种 /
- 新记录
Abstract: In the present paper, one new fossil diatom species, Gomphonema j ianghanensis sp.nov., is described.Its characteristic is valve narrowly lanceolate or linear- lanceolate with rounded headpole and narrowly rounded footpole.Axial area is narrow.Central area is distinct and transversely rectangular with one shortened striae on one margin, and has, or not, one shortened striae on the othermargin.It lack stigma.Raphe is linear, curved towards the proximal ends and reflexed towards the other side at the distal ends.Striae radiate throughout and slightly curved on the central margin.There are not striae near the disal ends in light microscope.Striae in themiddle port ion 6-9 in 10m, up to 11-13 in 10 m towards the ends.Length is 20-30 m and breadth is 4-7m.
- Fossil diatoms /
- New species /
- New records

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参考文献(19)

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中国硅藻化石新种和新记录种

计量

出版历程

NEW SPECIES AND NEW RECORDS OF FOSSIL DIATOMS FROM CHINA

计量

出版历程

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