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1.
广西隆林祥播地区二叠纪地层是一套连续的海相碳酸盐岩,出露良好,内含丰富的(竹蜓)类化石。本文记述了Pseudodoliolina属的12种,其中对2个新种Pseudodoliolina contracta sp.nov.,P.subelliptica sp.nov.作详细描述。新种均采于茅口阶Cancellina带。新种的发现为本文论述Pseudodoliolina(竹蜓)类动物群的演化特征提供了实际材料。 相似文献
2.
本文研究了采自辽宁锦西大红石砬子地区(后富隆山村北2公里处)的石千峰组的植物化石3属6种,即栉羊齿未定种Pecopteris spp.,中国束羊齿(新组合)Fascipteris sinensis(Stockm.et Math.)Comb.nov.,狭束羊齿Fascipteris Stena Gu et Zhi,密囊束羊齿Fascipteris(ptychocarpus) densata Gu et Zhi,束羊齿未定种Fascipteris sp.(Sp.nov.?),星囊蕨未定种(Asterotheca) sp.(sp.nov.?)。这些植物化石的发现,对本区上二迭统的确定、划分和对比有一定意义。 相似文献
3.
1986年我们首次在辽南发现类水母化石和藻类化石,并在大林子组浸泡出小壳动物化石。这一发现对辽南地区寒武系/震旦系界线的确定提供了古生物学依据,同时丰富了该区古生物学内容。类水母化石在兴民村组中段页岩层极其发育,初步鉴定主要种属有:多环辽南水母(新属、新种)Liaonanella Multicyclica Liu et Yang(gen.et sP.nov.),平盘辽南水母(新属、新种)L.Planodisciformis Liu et Yang(gen.etsP.now.),环带金县水母(新属、新种)Jinxianella Zonata Liu et Yang(gen.et sP.nov.),甘井子金县水母J.ganjingziensis Liu et Yang(gen.etsP.nov.),棋盘磨大连水母(新属、新种)Dalianiaqipanmoensis Liu et Yang(gen.et sp.nov.)。宏观藻类化石主要产在葛屯组的页岩层中,化石是:chuaria circularis Walcott,Tawuiadalensis Hofmann。关于这次发现的蠕虫化石、可疑小壳动物化石等正在研究中。 相似文献
4.
描记采于云南省沪西县城郊龙潭及阿庐古洞的金线喜巴属一新种，命名为阿庐金线喜巴Sinocyclocheilus aluensis Li et Xiao sp．nov。新种在外形上与狭孔金线喜巴S.angustiporus Zheng et Xiao（1985）相近，但有下列特征与之区别：1）新种头长显著大于体高；后者头长约等于体高。2）新种背鳍起点至吻端的距离大于至尾鳍基的距离；后者正相反。3）新种鳃孔大，上角超过眼上缘水平线；后者鳃孔小，上角低于眼上缘水平线。4）经线粒体细胞色素b基因测定，两者分子遗传距离为3．0％，提示是两个独立种。 相似文献
5.
云南洞穴金线鲃属鱼类(鲤科)一新种 总被引：1，自引：0，他引：1
描记采于罗平县—地下河金线鲃属一新种,命名为瓦状角金线鲃Sinocyclocheilus tileihornesMao,Lu et Li,sp.nov。新种外形与犀角金线鲃S.rhinocerous Li et Tao(1994)相近,但新种无侧线鳞,角顶部分叉呈瓦状,腹鳍较长,后伸超过肛门或达到臀鳍起点可与之相区分。 相似文献
6.
记述采自广西河池地区的鲤科鱼类一新属三新种。新属近金线鳃属Anchicyclocheilusgen.nov.的侧线鳞与体鳞一致可区别于侧线鳞大于体鳞的金线鳃属Sinocycloheilus。模式种半盲近金线鳃Anchicyclocheilus halfibindus,sp.nov.的背鳍分枝鳍条有9条表明其原始性;新属另一新种高肩近金线鲃Anchicyclolocheilus altishoulderus,sp.nov.以背鳍分枝鳍条7根和有明显额突等特征区别于半盲近金线鲃。第三个新种宜山金线鲃Sinocyclocheilus yishanensis,sp.nov.的背鳍不分枝鳍条纤细、柔软、光滑无锯齿;口亚上位;鳞大、鳞比2.1;侧线鳞52-54等区别于软鳍金线鲃S.malacopterus Chu et Cui。 相似文献
7.
Runnegar et Jell(1976)建立单板类Mellopegma属时,把该属归入Procarinariidae Wens 1938。后来,Runnegar et Jell(1980)认为这是一个错误,因为忽略了Horny(1964)已经指出Procarinaria的模式种是一个双壳类,故又把Mellopegma归入一个新科Stenothecidae。本文采用这一新的归属,并根据该属在河南和安徽发现的情况,认为该属开始出现的时间是早寒武世中期。本文描述产于河南下寒武统辛集组的该属一个新种Mellopegma brevicosta sp.nov. 相似文献
8.
Based on material deposited in the Marine Biological Museum of the Chinese Academy of Sciences(Qingdao),a new species,Lumbrineris sinensis sp.nov.,as well as Augeneria albidentata(Ehlers,1908),which is recorded for the first time from coastal water of China,are reported in the present paper.The specimens examined were collected during 1958 to 1960 from the Yellow Sea,East China Sea and South China Sea at depths of 4 to 182 m. 相似文献
9.
【目的】研究采自我国沿海岸的褐藻门短毛藻科Elachistaceae短毛藻属Elachista的分类。【方法】对采自我国沿海岸的短毛藻进行形态学鉴定,描述新种的形态特征以及其他分类学信息,并与相似种进行比较。【结果】鉴定出长海短毛藻E. changhaiensis Luan et Ding、短毛藻E. fucidola (Velley) Areschoug、暗色短毛藻E. fusca Luan et Ding和细枝短毛藻E. tenuissima Luan et Ding sp. nov.等4个种,含新种1个。细枝短毛藻藻体暗褐色,半球形,直径4～5 mm;基部由薄壁细胞组成基垫;同化丝可分成长同化丝和短同化丝,长同化丝较短,长1～2 mm,由63～128个细胞组成,直径6.0～9.5μm;短同化丝较长70～225μm,直径3.5～6.0μm。单室囊囊状,多室囊线状。模式标本存在中国科学院海洋研究所海洋生物标本馆(AST)。 相似文献
10.
云南洞穴金线鲃属鱼类（鲤科）一新种 总被引：2，自引：0，他引：2
描记采于罗平县一地下河金线喜巴属一新种，命名为瓦状角金线鲃Sinocyclocheilus tileihornes Mao，Lu et Li，sp．nov。新种外形与犀角金线鲃S．rhinocerous Li et Tao(1994)相近，但新种无侧线鳞，角顶部分叉呈瓦状，腹鳍较长，后伸超过肛门或达到臀鳍起点可与之相区分。 相似文献
11.
Three new species of Family Mitridae （Mollusca： Gastropoda） from the South China Sea are described in the present paper. They are Ziba aglais sp. nov. B. LI ＆ S. ZHANG, Neocancilla daidaleosa sp.nov. B. LI ＆ X. LI, and Mitra holkosa sp. nov. B. LI. Their systematic positions are also discussed. 相似文献
12.
13.
山东莱阳盆地的昆虫化石最早为A.W.Grabau(1923)和C.Ping(1928)所描述,计6属8种。最近,洪友崇(1984)又描述了3属3种。这样,共计发表了9属11种。实际上,这个地区的昆虫化石极为丰富。本文所描述的6目12科16属19种只是最新采集的昆虫化石的一部分,其中有11新属13新种,4已知属新种和2已知种。张生、刘德正和上官义宁等同志帮助采集了标本;中国科学院南京地质古生物研究所胡 相似文献
14.
徐凤山 《中国海洋湖沼学报》1992,10(2):153-155
The present paper deals with 4 species of Family Lyonsiidae , collected from the China Seas : one new genus and new species, Sinolyonsia sinica gen . et sp. nov, one species, Lyonsia kawamurai recorded for the first time from the China Seas , and 2 species L . ventricosa Gould and Agriodesma navicula (Adams et Reeve) reported previously from the Yellow Sea by the author . 相似文献
15.
Mangroves are unique in their biodiversity,but studies on their meiobenthic biodiversity in China are scarce.Despite the importance of mangroves,little work has been done on the classification of nematodes in mangrove wetlands.Fujian Province is the most northern point of China’s natural mangrove distribution,and it is also one of the provinces with the earliest constructed mangrove forest.In this paper,two new free-living marine nematode species of Desmodoridae from the Xiamen mangrove wetlands in China are described.Metachromadora xiamenensis sp.nov.is characterized by a cylindrical body,and smooth head capsule set off from the rest of the body.The cuticle is finely annulated and thickened at the midbody.Lateral ridges run from the posterior end of the pharynx to the middle of the tail.The amphid foveae is loop shaped and opens at the top with a double contour amphidial,pharynx with bipartite cuticularized internal cavity.There are 18 tubular precloacal supplements and tail with three small protuberances.Molgolaimus euryformis sp.nov.is characterized by a relatively short and plump body with finely annulated cuticle,which is particularly obvious in the tail.The head is small and wide with intensive striates.The inner and outer labial sensilla are indistinct with short spicules and ventral apophysis,a gubernaculum with a block-shaped hook,a swollen conical-cylindrical tail and an absence of precloacal supplements. 相似文献
16.
Three new species of fossil woods are reported from the Upper Jurassic to Lower Cretaceous in southeastern Mongolia,including Protaxodioxylon mongolense sp. nov. Circoporoxylon mongolense sp. nov. Protocircoporoxylon mongolense sp. nov. The anatomical characters of three new species are described in detail. 相似文献
17.
DING Qiuhong FU Xiaoping LI Yong ZHANG Wu . Shengyang Center of Geological Survey China Geological Survy Bureau Shenyang China . Shenzhen Fairy Lake Botanical Garden Shenzhen Guangdong 《东北亚地学研究》2011,(2)
Three new species of fossil woods are reported from the Upper Jurassic to Lower Cretaceous in southeastern Mongolia,including Protaxodioxylon mongolense sp. nov. Circoporoxylon mongolense sp. nov. Protocircoporoxylon mongolense sp. nov. The anatomical characters of three new species are described in detail. 相似文献
18.
本文研究了我国长江北岸湖北省武汉市新洲县阳逻镇北部晚第三纪的三种裸子植物化石木。它们是水松ＧｌｙｐｔｏｓｔｒｏｂｕｓｐｅｎｓｉｌｉｓＫ．Ｋｏｃｈ，武汉柏本ＣｕｐｒｅｓｓｕｓｗｕｈａｎｅｎｓｉｓＪ．ＪＹａｎｇｓｐ．ｎｏｖ．和武汉刺柏ＪｕｎｉｐｅｒｕｓｗｕｈａｎｅｎｓｉｓＪ．Ｊ．Ｙａｎｇｓｐ．ｎｏｖ，这些化石本的发现，给研究我国裸子植物提供了良好的依据．此外，对１９９０年发表于《林业科学》（２６卷４期）上的湖北柏木和河南松化石木也给了拉丁种名，它们分别是ＣｕｐｒｅｓｓｕｓｈｕｂｅｉｓｎｓｉｓＪ．Ｊ．Ｙａｎｇｓｐｎｏｖ．和ｐｉｎｕｓｈｅｎａｎｅｎｓｉｓＪ．Ｊ．Ｙａｎｇｓｐ．ｎｏｖ． 相似文献
19.
Nephroselmis gaoae sp.nov.is described on the basis of light and electron microscope observations ofcultured material originally collected and isolated from seawater of Jiaozhou Bay,Qingdao,China.Theperiplasts on the cell body and flagella are covered by five types of scales,two types on the flagella andthree on the body.Among these,the morphology and the number of spines of large stellate body scalesdiffer remarkably from those of previously described species of Nephroselmis.Apart from these,the unusualfine structure of the eyespot(stigma)is very characteristic.As in the other species of Nephroselmis,theeyespot lies immediately under the two-membraned chloroplast envelope;unlike the others,however,it isnot composed of a number of osmiophilic globules,but consists of about 14 curved rod-shapedosmiophilic bodies arranged loosely and randomly.This feature distinguishes the present new species notonly from the other species of Nephroselmis but also from the other motile algal species,the eyespots struc-ture 相似文献
20.
本文根据桐庐县瑶琳镇和平村上二叠统雾林山组（相当于龙潭组）剖面第⑨层中发现的一种奇待的种子化石，经标本描述鉴定，确认其为种子化石的新属种，而建立的奇丽桐庐籽（新属、新种）Tonglucarpusspectabilisgen.etsp.nov,归于晚二叠世。 相似文献