Pseudokoninckina xinpuensis的背壳极为深凹,两耳翼端强烈向背方膝曲,两侧坡极高又陡,拖曳部向背方高高翘起(图7-3),个体又小(壳宽6～8mm,壳长7～9mm),是较容易识别的特征种。与特征种相伴生的腕足类还有:Ninglangothyris subcircularis Jin et Fang(1977),Sanqiaothyris minoris sp.nov.?Aulacothyris t...
根据曾庆銮(1991)的研究,该阶段宜昌一带腕足底栖组合基本上以Benthic Assemblage1-2(BA1-2)为主。各相区OSq1底部与晚寒武世地层之间往往呈大的间断或岩性截然的接触关系(图3-1,图4-1、2),则说明寒武—奥陶纪之交曾经发生过较大规模的海平面变化。相对来说,由于这7个层序彼此间沉积相无太大的跳跃,主体又都...
1. Red piranha, scientific name Pygocentrus nattereri (Serrasalmus nattereri), is a well-known species known for its aggressive behavior and distinctive appearance.2. Anglerfish, also known as sea squirt, is a benthic fish species that typically resides between depths of 2 meters to ...
于子山等，2001，渤海大型底栖动物次级生产力的研究，青岛海洋大学学报31（6）：867～871 张志南，慕芳红、于子山，2001，胶州湾小型底栖生物的丰度和生物量，海洋与湖沼，2001（2）Han Jie , Zhang Zhinan , Yu Zishan （于子山）, John Widdows ,2001, Differences in the benthic?pelagic particl...
其中泉古菌以C3为主要类群,另有少量序列属于marine benthic group (MBG)-B,MBG-C、marine crenarchaeotic group I (MGI)、marine hydrothermal vent group (MHVG)和novel group of crenarchaea(NGC);广古菌以MBG-D为主,其他序列分别属于Unclassified Euryarchaeotic Clusters-1/2 (UEC-1/2)。 关键词:古菌...
under Near Ultraviolet Light, Environmental Science & Technology, 2012, 46: 2345-2351Chunying Wang, Lingyan Zhu*, Mingcui Wei, Peng Chen, Guoqiang Shan, Photolytic reaction mechanism and impacts of coexisting substances on photodegradation of bisphenol A by Bi2WO6 in water,...
The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms.[5] This reef structure is composed of and built by billions of tiny organisms, known as coral polyps.[6] The Great Barrier Reef supports a wide diversity of life, ...
日本海的历史一般划分为6个阶段:①大陆边缘期(古近纪—早中新世);②边缘海初始期和大的海侵期(早中新世晚期—早/中中新世);③海水加深期(中中新世早期);④深海期(中中新世—晚中新世);⑤现代边缘海的形成期(晚中新世晚期/早上新世);⑥现代边缘海期(晚上新世到现代)。在第②阶段浅海沿岸主要分布着热带和亚热带...