Issue 2,1999 Table of Contents

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  • 1  NEOPROTEROZOIC MICROPHYTOPLANKTONIC FOSSILS IN CHINA AND THEIR BIOSTRATIGRAPHICAL IMPLICATION
    YIN Lei-Ming
    1999(2):133-143. DOI: 1
    [Abstract](285) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    由于我国南,北方新元古代构造复杂,地层不整合,古生物的不同和同位素年龄数据的差别,两地区新元古代地层的对比长期未能解决。近年来,对我国南、北方过渡地区,如安徽淮南,东秦岭北坡等一些新元古代地层典型剖面的详细研究,新的和更加充实的古生物证据,同位素年龄,碳稳定同位素等资料表明,研究地区的中,晚元古代地层与扬子地台震旦系或燕山地区青白口系都不能对比。基于已发表的微体植物化石资料,概要总结我国新元古代生
    2  ON THE GENERA AVICULOPECTEN AND HETEROPECTEN
    Noel J. Morris FANG Zong-Jie Noel J. Morris
    1999(2):147-154. DOI: 1
    [Abstract](277) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    The type species of Aviculopecten, A. planoradiatus, is redescribed. The gen eric diagnosis of Aviculopecten is emended. Heteropecten and some other related or similar taxa are discussed.
    3  MIDDLE PALAEOZOIC CALCEOLOID CORALS FROM CHINA
    Francisco Soto LIAO Wei-Hua Francisco Soto
    1999(2):155-167. DOI: 1
    [Abstract](190) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    古生代中期的志留纪和泥盆纪地层中出现了一类奇特的拖鞋形珊瑚,如Calceola,Rhizophyllum等,过去由于形状特殊往往被误认为是牡蛎,固有蛤或腕足类,这类珊瑚平躺在浅海软底或局部含碎石块的海底,平躺的一面呈扁平状,朝上的一面则呈上凸形,平时打开各自的萼盖伸出触手拨动水流捕食微生物,一遇强敌或泥沙浊流便迅速将萼盖紧闭,保护自己的软体免受伤害,Rhizophyllum的地质历程主要是志留纪,
    4  ORIGIN AND EARLY EVOLUTION OF CERATOPYGIDAE LINNARSON, 1869 (TRILOBITA)
    YUAN Jin-Liang YIN Gong-Zheng
    1999(2):168-182. DOI: 1
    [Abstract](292) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    根据贵州东部晚寒武世早期地层内获得的刺尾虫科三叶虫新材料,论述了具有尾侧刺和不具尾侧刺的此类三叶虫共同起源于褶颊虫目的Mapaniidae,以及它们的早期演化,此外,还描述了此类三叶虫1新亚属、2新种和2新亚种及其个体发育过程中的一些变异,对于正确认识寒武纪三叶虫的分类,演化具有一定的意义。
    5  HAUTERIVIAN-BARREMIAN DINOFLAGELLATES FROM THE LONGZHAOGOU GROUP OF THE H87-3 WELL IN HULIN BASIN, EASTERN HEILONGJIANG, NE CHINA
    HE Cheng-Quan WAN Chuan-Biao YANG Ming-Jie
    1999(2):183-202. DOI: 1
    [Abstract](240) [HTML](0) [PDF 0.00 Byte](6)
    Abstract:
    对首次发现于黑龙江虎林县东北部H87-3孔龙爪沟群的海相沟鞭藻类进行了初步研究,沟鞭藻组合包括12属20余种,其中描述和照相9属17种,包含4新种。根据全球分布的一些重要种的地质历程,认为以Oligosphaeridium属占优势和丰富或较丰富的Odontochitina operculata,Gardodinium trobeculosum,Circulodinium attadalicum,P
    6  EARLY TERTIARY TRACE FOSSILS FROM KING GEORGE ISLAND, WEST ANTARCTICA
    YANG Shi-Pu SHEN Yan-Bin
    1999(2):203-217. DOI: 1
    [Abstract](243) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    Abundant trace fossils were found in the Eocene Fossil Hill Formation, Fildes Pe ninsula, King George Island, West Antarctica. These trails are commonly associat ed with bird tracks. One new ichnogenus ( Gracilichnus ) and five new ichnospe cies ( G. linearis, G. sinualis, G. circularis, G. tubercularis and G. pust ularis ) are proposed in this paper. The tracemakers were considered as thin bi lateral symmetrical wormlike animal (presumably Oligochaeta) on the basis of thr eadlike slender trails. The sediments preserved trails and bird footprints proba bly represent a fluvio lacustrine depositional environment approaching sea coas t or bay. Paleozoic and Mesozoic trace fossils have been reported in Antarctica, parti cularly in Transantarctic Mountains (Tasch, 1976; Ineson, 1987; Buotois and Lope z Angriman, 1991,1992;Woolf, 1990,1993; Cooper and Shergold, 1991). However the Cenozoic trace fossils are poorly known in this continent (Wiedman and Feldmann, 1988) and has not been described from the continental sediments. The trace fossil material described here was found from the Fossil Hill Formatio n of Fildes Peninsula Group, in Fildes Peninsula, King George Island, South Shet land Islands, West Antarctica (Text fig.1), and collected by the second author during the austral summer of 1987-1988(the fourth Chinese Antarctic Expedition) and 1994-1995 (the eleventh Chinese Antarctic Expedition). The flora and bird fo otprints associated with the trace fossils and petrological characteristics indi cate that fossil bearing strata are of fluvio lacustrine depositional environm ent under a humid and warm climate (Covacevich and Rich, 1982; Li Haomin and She n Yanbin, 1990; Shen Yanbin, 1994; Xue Yaosong et al ., 1996). Abundant speci mens with well preserved structures make the study of tracemaker and paleoecolo gical environment possible.
    7  THE SYSTEMATIC POSITION OF THE SOLID COLUMN OF RUGOSE CORAL
    LIN Ying-Dang LIU Peng-Ju
    1999(2):218-227. DOI: 1
    [Abstract](320) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    The systematic position of the solid column of Rugosa has been a controversial i ssue for a long time. The solid column consists of fibrous tissue and clearly di ffers from the axial colum or protoaxial column. Its axial structure has no rela tionship with the cardinal septum or counter septum and inner ends of the septa. It is an independently developed axial structure in rugose coral. So, the Rugos a with solid column could constitute a new order Cyathaxoniida ord. nov. Ac cording to the unique fibrous tissue and the shape of solid column, this order c ould be further subdivided into three families: Cyathaxoniidae Edwards et Haime, 1850, Amygdalophyllidae Grabau, 1935 and Ekvasophyllidae Hill,1981. There are abundant solid column corals in Early Carboniferous of China. In this paper, three genera (including 1 new genus) and five species (including 4 new an d 1 uncertain species) are described. They were found from Datangian of Early Ca rboniferous in Qinghai and Yunnan provinces.
    8  COMPARATIVE STUDY IN ICHNOLOGY, AN EXAMPLE OF DEEP-WATER FLYSCH PHYCOSIPHON ASSEMBLAGE FROM THE LATE TRIASSIC STRATA OF WESTERN SICHUAN
    YIN Jia-Run YAO Hua-Zhou PEI Shu-Wen
    1999(2):228-237. DOI: 1
    [Abstract](289) [HTML](0) [PDF 0.00 Byte](6)
    Abstract:
    A deep water flysch trace assemblage dominated by Phycosiphon has been found from the Late Triassic of the Baiyu area, western Sichuan Province. The trace a ssemblage is analogous to the recent Phycosiphon community in the turbidite sequences in Sulu Sea, Philippines, indicating a high sedimentary rate and exaer obic oceanic bottom of active tectonic zones. Accorrding to the changes of sedim entary rate, the specimens of Phycosiphon could be distinguished as four mor photypes. Among them, Phycosiphon A refers to the post depositional traces , suggesting a higher rate; while Phycosiphon D, C are considered to be pre de positional traces, indicating a stable depositional environment with low sedimen tary rate, and Phycosiphon B may represent a transitional morphotype betwee n Phycosiphon A and Phycosiphon D. Taking into account the ecological similarity with the recent Phycosiphon community of Sulu Sea, the paleogeogr aphic aspect of the Baiyu Sea, a volcanic islands arc tensional basin during th e Late Triassic, could be well comparable with the case of the recent Sulu Sea B asin, therefore the Baiyu Basin might have been characterized by steep slope, fr equent turbidite, high depositional rate more than 100cm/ka, and sedimentary bot tom in exaerobic zone; the paleo sea seems to have been a depositional basin si lled by volcanic islands.
    9  EARLY CAMBRIAN CHANCELLORIIDS FROM EMEI,SICHUAN PROVINCE, SW CHINA
    LI Guo-Xiang
    1999(2):238-247. DOI: 1
    [Abstract](303) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    四川峨眉麦地坪剖面下寒武统麦地坪组上段chancelloriids类骨片化石丰富,皆以磷质内核方式保存,其中首次发现具有两个中央射管的chancelloriids骨片。对Chancelloriairregularius Qian,sp.,Allonnia sp.进行了详细描述,在内核标本表面,骨片的基面上首次发现了保存极好的网状微细构造,对这一微细构造解决尚有困难,但有可能为骨片原始壳体结构的内端
    10  BENXI FORMATION AND BRACHIOPOD COMMUNITY OF DUIJIUGOU, JUNGAR BANNER, INNER MONGOLIA, NORTH CHINA
    ZENG Yong QU Yong-Hua CAI Cheng-Jun
    1999(2):248-254. DOI: 1
    [Abstract](271) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    Benxi Formation in Duijiugou, Jungar Banner, Inner Mongolia is described and the brachiopod fauna from the formation is carefully analysed. Having recognize d several brachiopod dominated community, we further discuss the structure of the community, such as the differentiation of species, the relative abundance of species, the spatial gradation of community and the distribution of energy et c. The brachiopod community is a peak community in the succession.
    11  THE DISTRIBUTION OF COCCOLITHS IN SUBMARINE RIDGES OF YELLOW SEA AND THE RESEARCH ON THE SUBMARINE SEDIMENTATION TYPE
    ZOU Xin-Qing SHI Bing-Wen XU Ye-Hua LI Hai-Yu
    1999(2):255-259. DOI: 1
    [Abstract](279) [HTML](0) [PDF 0.00 Byte](5)
    Abstract:
    Coccolith standard distribution in shore and shallow sea area is discussed i n this paper. Such standard distribution is proposed based on the ecological cha racter of the coccolithopora. Coccoliths in 62 samples collected in submarine ri dges of Yellow Sea is used to be an example to build the index distribution pa ttern. According to the pattern, the sedimentation type of each sampling site ca n be easily ascertained

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