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始新世至中始新世早期气温较高 , 中始新世后期至到晚始新世气温明显降低。 2009020134 分子碳同位素组分显示的晚第四纪以来中国黄土高原中部地区植被的演化 = Vegetation evolution on the central Chinese Loess Plateau since late Quaternary evidenced by elemental carbon isotopic composition. ( 英文 ). Zhou Bin; Shen Chengde; Zheng Hongbo; Zhao Meixun; Sun Yanmin. Chinese Science Bulletin, 2009, 54(12): 2082-2089 There are many controversial issues in loess studies such as natural vegetation types on the Chinese Loess Plateau during the historical periods and the spatial and temporal evolution of C 3 /C 4 plants. Elemental carbon isotopic composition (δ 13 C ec ) in the loess section may offer new evidence for these problems. Elemental carbon (EC) is produced by incomplete combustion of vegetation, and its carbon isotopic composition has a very small difference from that of the formal vegetation, then δ 13 C ec can be used as a record to recover the changes of vegetation. Elemental carbon was extracted by applying the oxidation method from the loess-paleosol sequence in the central Chinese Loess Plateau, and its carbon isotope composition was analyzed by the isotope mass spectrometer. The results showed that the vegetation in this region was a mixed type of C 3 and C 4 plants, dominated with C 3 plants in most of the time. Since late Quaternary, C 3 /C 4 plants may not follow a simple glacial-interglacial cycle mode on the Chinese Loess Plateau, but showing fluctuations. C 3 plants increased gradually in L4 period, and more C 3 plants occurred during S3 period, and C 4 plants increased again during L3-L2 periods, after that, C 3 plants dominated again during S1-S0 periods. During periods of paleosol development, C 3 plants were abundant in S3 and S1, and there were more C 4 plants in S2 and S0. During periods of loess sedimentation, there were more C 3 plants in L4 and L1, and there were more C 4 plants in L3 and L2. On the orbital timescale, the vegetation variations revealed by δ 13 C ec record are consistent with the results of pollen data and also similar to the results obtained by organic carbon isotopic composition since the last glacial period. 藻类 2009020135 北大西洋东部上新世 - 更新世沟鞭藻囊孢和疑源类事件的时代标定 (DSDP Hole 610A) = Age calibration of dinoflagellate cyst and acritarch events in the Pliocene-Pleistocene of the eastern North Atlantic (DSDP Hole 610A. ( 英文 ). De Schepper S; Head M J. Stratigraphy, 2008, 5(2): 137–161 An independently calibrated record of dinoflagellate cyst and acritarch events is presented for the Early Pliocene through Middle Pleistocene (ca. 4.0 – 0.5 Ma) of eastern North Atlantic Deep Sea Drilling Project (DSDP) Hole 610A. A new age model is establishedfor this hole and tied to marine isotope stratigraphy and magnetostratigraphy back to 3.6 Ma. New data on the range of the calcareousnannofossil Reticulofenestra pseudoumbilicus indicate that the base of this hole is about 1.0 Myr younger than previously thought. A diverse dinoflagellate cyst and acritarch record allows the significant highest and/or lowest occurrences of 19 dinoflagellate cystand seven acritarch taxa to be recognised in Hole 610A and calibrated to the latest astronomically-tuned Neogene time scale (ATNTS2004) via our new age model. Comparing records across the North Atlantic and Mediterranean reveals near-synchronous highest occurrences of the dinoflagellate cysts Ataxiodinium confusum (2.63 – 2.65 Ma), Invertocysta lacrymosa (2.72–2.74 Ma in the eastern andcentral North Atlantic and Mediterranean) and Impagidinium solidum (ca. 3.15 – 3.17 Ma), and the acritarch Leiosphaeridiarockhallensis (ca. 3.83 – 3.88 Ma). Highest occurrences of the dinoflagellate cyst Batiacasphaera minuta/micropapillata (3.83 – ca. 3.7Ma) and acritarch Cymatiosphaera latisepta (2.49 – 2.63 Ma) also provide useful markers for correlation.A precise stratigraphy for Hole 610A allows us to evaluate the impact of paleoceanographic and climatic events on the dinoflagellatecyst record. Climatic and oceanographic reorganizations associated with the onset of Northern Hemisphere glaciation appearresponsible for the disappearance of many species between 2.8 and 2.6 Ma. The lowest occurrence of Impagidinium cantabrigiense (1.86 Ma) in the Olduvai Subchron is one of the few good biostratigraphicmarkers for the uppermost Gelasian in Hole 610A 2009020136 44
加拿大西北地区 Quartzite 湖地区 Hurwitz 群古元古代叠层石 = Paleoproterozoic stromatolites, Hurwitz Group, Quartzite Lake area, Northwest Territories, Canada. ( 英文 ). Hofmann H J; Davidson A. Canadian Journal of Earth Sciences, 1998, 35(3): 280–289 Decimetric to metric domal stromatolites with constituent ministromatolites characterize reddish, 13 C-enriched dolostones in the Watterson Formation of the Quartzite Lake area west of Hudson Bay. They provide paleontologic support for a correlation with the only other known early Paleoproterozoic stromatolite occurrences in North America: the Kona Formation of Michigan, and the Nash Formation in southern Wyoming. They also are similar to stromatolites in probable coeval Jatulian carbonates in Karelia on the Baltic Shield, and possibly to stromatolites in the Hutuo Group in China. 2009020137 加拿大西北地区斯莱芙构造省太古代晚期贝克河成层火山叠层石 = Stromatolites of the late Archean Back River stratovolcano, Slave structural province, Northwest Territories, Canada. ( 英文 ). Lambert M B. Canadian Journal of Earth Sciences, 1998, 35(3): 290–301 Nine stromatolite localities in the Back River volcanic complex occur at the boundary between 2692 Ma felsic dome-flow complexes, marking the latest eruptions of this stratovolcano, and overlying turbiditic sedimentary rocks of the Beechy Lake Group, Yellowknife Supergroup. Stromatolites form lenses isolated within coarse volcanic breccia at margins of felsic dome-flow complexes, and 2 m thick bioherms that extend laterally for hundreds of metres. Thin units contain wavy laminae and open-spaced, linked mounds, which form thin encrustations on breccia blocks, or clusters of mounds with low synoptic relief. Thick successions comprise undulatory, flat laminated dolomite that contains wrinkled wavy laminae, pseudocolumnar forms, and locally elongate, low-relief mounds. These units typically contain millimetre-scale layers of fine volcanic ash at regular intervals, testifying periodic explosive eruptions during deposition of microbial mats. The stromatolites, which are identified by gross morphology and distinctive laminae, are all stratiform types. Carbonate units all occur on the seaward side of the volcanic dome-flow complexes that straddled the shoreline around the volcano. The stromatolites probably represent isolated microbial communities that may have developed around areas of fumarolic (or hydrothermal) activity associated with these domes. Stratigraphy seaward from the domes comprises carbonate-cemented dome-flanking breccia, stromatolitic and oolitic carbonate, pebbly rhyolite volcarenite, carbonaceous mudstones, banded iron formation, and turbidites. Thus the stromatolites mark a local environment where life flourished in an Archean sea that lapped onto active volcanic domes along the shallow flanks of an emergent stratovolcano. 2009020138 加拿大北极地区 Kanguk 组康尼亚克期晚期角藻型沟鞭藻囊胞新种 Odontochitina octopus = A late Coniacian ceratioid dinoflagellate cyst, Odontochitina octopus sp.nov., from the Kanguk Formation, Canadian Arctic. ( 英文 ). N ú ñez-Betelu K; Hills L V. Canadian Journal of Earth Sciences, 1998, 35(8): 923–930 Anew species of dinoflagellate cyst, Odontochitina octopus sp.nov., is described from the Upper Cretaceous Kanguk Formation of the Sverdrup Basin, Canadian Arctic Islands. The features that support the proposal of this new species also necessitate the emendation of the genus. Odontochitina octopus is a large, cornucavate, and ceratioid cyst with four finger-like terminations on the apical horns and two terminations on both the postcingular and antapical horns. These finger-like terminations are unique to this new species and are formed by the detachment of the paraplates at mid-length of each horn. All other features of O. octopus conform with the previous description of the genus. In the Family Ceratiaceae four plates form the apical horn, whereas two plates are involved in both the postcingular and antapical horns. In O. octopus the mid-length detachment of the horn-forming paraplates seems to have developed the finger-like terminations. Since the nature and amount of pores and perforations in other species of Odontochitina are variable and possibly linked to changes in the environment, the presence of the multiplefingered O. octopus in a single widespread horizon might also be indicative of short-lived unusual environmental conditions. At this horizon, which has been dated as late Coniacian by the ammonite Scaphites depressus Reeside, the palynomorph 45
Page 2 and 3: 第 5 卷第 2 期古生物学
Page 4 and 5: calcite in 38% sulphuric acid. The
Page 6 and 7: 2009020010 细胞过度生长
Page 8 and 9: edistribution of continents, orogen
Page 10 and 11: Turner E C; Burdige D J. Geology, 2
Page 12 and 13: 遗迹化石 2009020028 美国
Page 14 and 15: trackways from Fumanya (south-east
Page 16 and 17: 华盛顿奥林匹克半岛
Page 18 and 19: sequenced and analysed the genome o
Page 20 and 21: estuarine sediments: Chezzetcook In
Page 22 and 23: preserved in the gypsum crystals of
Page 24 and 25: 文 ). Lian O B; Mathewes R W; Hico
Page 26 and 27: Lower Cretaceous of Santa Cruz prov
Page 28 and 29: sediments of the Zhuravka and Abros
Page 30 and 31: Flores Formation is exposed along t
Page 32 and 33: egion in Late Permian times was pro
Page 34 and 35: Chlorogloeaopsis contexta, Obruchev
Page 36 and 37: deposition of organic-rich, low-oxy
Page 38 and 39: 东攀剖面二叠纪末期
Page 40 and 41: econcile with Ediacaran trace and b
Page 42 and 43: 2009020121 中国西北兰州
Page 44 and 45: Paleontologica Argentina, 2008, 45(
Page 48 and 49: assemblage is highly dominated by m
Page 50 and 51: Creek Limestone of the Molong High.
Page 52 and 53: 木属的 3 个同名 Cyclostig
Page 54 and 55: Ceratopteris are from the Eocene of
Page 56 and 57: covering of the spore mass. Ultrast
Page 58 and 59: Southern Floristic Province. It imp
Page 60 and 61: An anatomically preserved mature st
Page 62 and 63: and predation between the two ocean
Page 64 and 65: endemic or Andean forms and others
Page 66 and 67: islands" (Taylor and Wilson, 2003)
Page 68 and 69: analysis, SHE Community Structure I
Page 70 and 71: 2009020208 安第斯火地岛
Page 72 and 73: Miolepidocyclina, Nephrolepidina, E
Page 74 and 75: alaskensis n. gen. and sp., Virgula
Page 76 and 77: y the fissispongiid Fissispongia ja
Page 78 and 79: to a revival of Kiderlen's (1937) h
Page 80 and 81: gentle and slow extinction speed an
Page 82 and 83: Two new bryozoan species are descri
Page 84 and 85: onset of Lopingian recovery/radiati
Page 86 and 87: ut also found in the paterinates. I
Page 88 and 89: is reinstated as the reference for
Page 90 and 91: three species are widespread in the
Page 92 and 93: Caenogastropoda displayed considera
Page 94 and 95: Western Canada Province of the Old
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originally referred to Cypraea cont
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the Late Triassic mass extinction b
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of septal folding is still, however
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subspecies originally referred to a
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persisting in the Dry Valleys until
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Great Estuarine Group (Jurassic) of
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have been extended as a result of t
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Otekaike Limestone an inner shelf e
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arthropods (Notostraca and Insecta:
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with a lichenocrinid holdfast, and
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Gotland, in Homerian (upper Wenlock
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terms of growth and development. Gr
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characterises the genus Ditrupa and
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Middle-Late Devonian. A new onychod
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hachirhinchus. Here, we describe ne
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segmented pectoral fin. The small u
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两栖类离片椎类中褶
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南非卡洛下三叠统 Kat
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Formation (Lower - Middle Campanian
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traits evolved in Theropoda. Our re
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2009020428 联合王国威尔
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vestigial or absent 'A' horn-cores,
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anterior dorsal vertebrae and proba
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2009020449 谢佩岛下始新
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Ka BP. Canids in this assemblage in
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collaboration avec le regrett é Pr
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Eucyon remains from the Pliocene Ar
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Megatheriidae) from the Arroyo Chas
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The trilophodont gomphothere group
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oldest representative of Eobaatar i
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ugose, almost spongy aspect; suture
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Neues Jahrbuch fur Geologie u. Pala
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ca 500 kyr toward the precessional
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subdivided in detail in Russia shou
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sediments were deposited in an intr
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Group 1 gneiss-migmatitic rocks (ca
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and implies that these two continen
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1.6 Ma, that is to say, the isotopi
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millipede remains. A review of the
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Kimmeridgian-early Tithonian, Titho
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2009020548 藏东南特提斯
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events and their induced harsh envi
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esearchers, here we suggest that th
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adjacent paleosols that differ in t
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generally consistent northeast tren
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Palaeoclimatology Palaeoecology, 20
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stratigraphic context. Nevertheless
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esponsible for fossil orientation:
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sulfide assemblages in them, of Cen
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south of the island. The occurrence
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ecords in the Jiuquan Basin, northw
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Myr younger than hitherto considere
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