南沙群岛鹑螺总科新记录和新种的记述     

张素萍 《海洋与湖沼》2004,35(2):156-158

对2002年5月中国科学院海洋研究所在南沙群岛诸碧礁海洋底栖生物调查中采集的一批海洋软体动物标本进行整理研究,发现了属于软体动物门、鹑螺总科中的一个新种和一个新记录,分别为嵌线螺科Ranellidae中的一新种：南沙蝌蚪螺Gyrineum nanshaensis sp.nov.;扭螺科Personidae中的一个新记录：小扭螺Distorsomina pusilla(Pease)。  相似文献   

Mollusca from Last Interglacial fluvial deposits of the River Thames at Trafalgar Square,London     

R. C. Preece 《第四纪科学杂志》1999,14(1):77-89

An account is given of the molluscan assemblages recovered from fluvial deposits beneath the ‘Upper Floodplain terrace’ of the River Thames in the vicinity of Trafalgar Square, central London. A total of 37 aquatic and 28 terrestrial taxa have been recorded, a diversity indicative of full interglacial conditions. Palaeobotanical and vertebrate evidence suggests that these fossiliferous sediments belong to the Last (Ipswichian) Interglacial, a conclusion strongly supported by molluscan evidence. The combination of the presence of certain species, such as Belgrandia marginata, Potomida littoralis and Margaritifera auricularia, together with the absence of other taxa that no longer live in Britain, such as Pisidium clessini, Corbicula fluminalis and Unio crassus, imparts a distinctive character to the fauna. These temperate molluscs were not only present in the Trafalgar Square Sands and Silts, but also in the underlying Spring Gardens Gravel, showing the latter to be an interglacial aggradation that did not accumulate during the late Wolstonian, contrary to previous interpretations. Copyright © 1999 John Wiley & Sons, Ltd.  相似文献   

中国海滑蛤属Liocyma(双壳纲:帘蛤科)一新种          下载免费PDF全文

张爱君  徐凤山  冷宇 《海洋与湖沼》2010,41(5):796-798

滑蛤属至今已发现的种都分布于北半球,这些种类都是冷水种。新种Liocyma chinensis是一个温水种,采自渤海莱州湾,这是滑蛤属在亚洲大陆最南的分布界线。新种的发现,增加了黄、渤海动物区系中的冷水性因素。  相似文献   

南海玉螺科两新种记述   总被引：2，自引：1，他引：1       下载免费PDF全文

张素萍 《海洋与湖沼》2009,40(6):808-812

在整理中国科学院海洋生物标本馆收藏的玉螺科标本时,经形态分类和齿舌解剖学研究,发现了属于玉螺科的2个新种,即:马氏玉螺Natica maxiutongi sp.nov.和南海窦螺Sinum nanhaiensis sp.nov.。两新种均分布于南中国海,其中马氏玉螺采自海南岛陵水和黎安的潮间带至潮下带浅海砂质海底,壳面褐色或栗色,体螺层上有3-4条深褐色的螺带;南海窦螺分别采自广东近海和南沙群岛海域水深105m和102m的泥质沙海底,贝壳小,呈长卵圆形,壳面白色或淡黄褐色,表面螺肋和生长纹细密。  相似文献