南海介形类(介形纲:壮肢亚纲:吸海萤科)一新属新种——复合多腺浮萤

浮游介形类是海洋生态系统中极为丰富的一类小型甲壳动物,是海洋浮游动物的重要组成部分。吸海萤科是介形纲吸海萤目下的一大类群,其中,浮萤族已记述21属的生物。本文报道和描述了新近采自南海中部的一个浮萤族新属新种--复合多腺浮萤。该新物种与相关属和种可通过综合相关特征进行区分：位于右不对称腺体上方的侧角腺开口于近后缘;沿其壳腹缘具有一列排列密集的边缘腺;其前器官形状的综合特点与族内其他属物种均不同;第一触角的e刚毛不具有毛或刺;第二触角内肢乳状突表现为一具有腹面中央凹的椭圆隆起,第一外肢具有一根小背前缘刺,第一与第二外肢愈合,第三与第四外肢不具有刚毛或刺;大颚的第一内肢具一根长腹侧刚毛,第二内肢具一根腹侧刚毛;小颚第一内肢具两根基部刚毛;第五肢的第一外肢仅具一根腹侧刚毛;第六肢的第一与第二外肢不具有腹侧刚毛。其壳上主要腺体及开口位置与其他已记录属种的显著区别是该新属的主要特征。     

A New Giant Compsognathid Dinosaur with Long Filamentous Integuments from Lower Cretaceous of Northeastern China

1 Introduction Compsognathids are a small group of theropods commonly placed at the basal position within Coelurosauria (Sereno, 1999; Rauhut, 2003; Holtz and Osmólska, 2004; Norell and Xu, 2005). Recently new findings make the number of valid compsognathid genera increase rapidly. This group contains the relatively complete Compsoganthus (Ostrom, 1978; Bidar et al., 1972) and Juravenator (G?hlich and Chiappe, 2006) from the Upper Jurassic of West Europe, and Sinosauropteryx (Ji and J…     

Two new species of Family Prasiolaceae (Prasiolales, Chlorophyta) from China Sea

Amomg the 30 known species of the algal family Prasiolaceae (Prasiolales, Chlorophyta), nine marine species have been found in marine environments but none in China seas. We reported here two new species Prasiola fangchengensis Luan et Ding sp. nov. and Prasiola volcanica Luan et Ding sp. nov. from subtropical coastal water of southern China.     

发光细菌一新种──青海弧菌

于１９８５年８月从青海湖产的青海裸鲁体表分离到７０株发光细菌，通过表型特性分析，超氧化物岐化酶的凝胶双向扩散试验，以及Ｇ＋Ｃ摩尔百分比测定进行鉴定分类。结果表明，７０株发光细菌在表型特性，免疫学特性等方面彼此高度相似，但与已知的各种发光细菌有显著差异。鉴定为弧菌属的一个新种，定名为青海弧菌Ｖｉｂｒｉｏｑｉｎｇｈａｉｅｎｓｉｓｓｐ．ｎｏｖ．。典型菌株保存于华东师范大学生物系。     

拟急游虫一新种──大拟急游虫

应用蛋白银染色法对采自大亚湾水域的拟急游虫进行形态学研究,并与文献报道的种类进行比较发现：该种拟急游虫在个体大小以及体纤毛的数量上与同属的其他相似种有着极明显的差异,定为拟急游虫属的一个新种,命名为大拟急游虫Strombidinopsisgrandissp.nov.。     

牙鲆病原秦皇岛弧菌的血清型及荧光抗体检验

用分离于病(死)牙鲆(Paralichthys olivaceus L.)的一种新病原弧菌——秦皇岛弧菌(Vibrio qinhuangdaora sp.nov.)的代表菌株(HQ010712-1株),分别制备全菌(OK)及热处理(121℃作用1h)的菌体(O)免疫原,强化免疫接种家兔制备相应抗血清,对供试12株秦皇岛弧菌进行了血清型检定,结果表明均存在同种的K抗原和同种的O抗原(血清同源),其中O抗原具有强免疫原性、K抗原的免疫原性弱但具有强O凝集抑制作用;以相应OK抗血清为第一抗体,以标准的羊抗兔IgG荧光抗体为第二抗体,对12株秦皇岛弧菌的纯培养物及用代表菌株(HQ010712-1)人工感染病死牙鲆的肝组织进行了间接荧光抗体染色,结果显示了特异的荧光反应。     

Two Species of Zosterophyllum from South China and Dating of the Xujiachong Formation with a Biostratigraphic Method

Zosterophyllum longa sp.nov.is reported from the Lower Devonian Pingyipu Formation, Jiangyou District,northern Sichuan of China.This new plant has vertically elongate sporangia differing from all known species of Zosterophyllum,demonstrating morphological variations in Zosterophyllophytina.New materials of Zosterophyllum yunnanicum from the Lower Devonian Xujiachong Formation,Qujing District,eastern Yunnan of China show that fertile axes of this species are anisotomous or pseudomonopodial or K-shaped in branching.Sometimes fertile lateral axes are very short and bear an axUlary axis at the dividing point.Distinct thickening occurs along the whole margin of a sporangium,with sporangial lobes undeveloped.The evolution of Zosterophyllum is tentatively discussed.A biostratigraphic method of Gerrienne and Streel is introduced and applied to dating of the Lower Devonian Xujiachong Formation,which is considered as of the late Pragian-early Emsian.     

东海自由生活线虫两新种

描述了采自东海陆架沉积物中自由生活线虫Hopperia和Nemanema属的两个新种。新种大化感器霍帕线虫主要特征是螺旋形化感器5圈,较大;弓形交接刺近端宽大具有中肋,延伸至三分之一处;引带具有弯曲的引带突;6个乳突状的肛前辅器;锥柱状尾具有膨大的末端和尾端刚毛。新种小线虫的主要特征是身体大小是属内最小的;具有较大的椭圆形化感器;尾锥状;交接刺细,具有腹面翼膜,近端弯钩状;引带环形;1个肛前辅器乳突状,其上着生3条刚毛。更新完善了Hopperia属17个种的二岐检索表。     

辽宁早侏罗世化石木材

辽宁地区木化石丰富,现已发现早侏罗世松柏类硅化木材 5属 8种,其中包括 2个新种, 2个修订种, 3个已知种及 1个未定种,即： Protophyllocladoxylon chaoyangense Zhang et Zheng sp. nov.,P. franconicum Vogellehner, Protosciadopityoxylon liaoxiense Zhang et Zheng sp. nov., P. jeholense (Ogura) Zhang et Zheng comb. nov., Sciadopityoxylon heizyoense(Shimakura) Zhang et Zheng comb. nov., Protocedroxylon dibneri (Shilkina) Shilkina et Chudajb., Xenoxylon latiporosum Gothan, X.? sp.。本文对新种作了描述,对前人鉴定有误的属种进行了修订,并概述了 5个产地木材化石组合特征及其古气候环境。     

A New Hadrosauriform Dinosaur from the Early Cretaceous of Gansu Province, China

A new basal hadrosauriform dinosaur, Xuwulong yueluni gen. et sp. nov., is reported based on an articulated specimen including a complete cranium, almost complete axial skeleton, and complete left pelvic girdle. The specimen is recovered from the Early Cretaceous Yujingzi Basin in the Jiuquan area, Gansu Province of northwestern China. Xuwulong is among the most basal members of hadrosauriform dinosaurs, and distinguished by its unique lower jaw in having a V-shaped rostral end of the dentary in lateral view and a mandibular articular surface which levels with mid-height of the dentary ramus, as well as an enlarged and downturned prepubic process. Including Xuwulong, three basal hadrosauriforms have been discovered from the Early Cretaceous Xinminpu Group in the Mazongshan area, making it an important area to study the origin and early evolution of duck-billed dinosaurs.