wide tooth crowns, a sub-rectangular axial neuralspine seen in lateral view, and large...2008040451辽 西 下 白 垩 统 九 佛 堂 组 珍 稀 化 石 层 = PreciousFossil-Bearing Beds of the Lower CretaceousJiufotang Formation in Western Liaoning Province,China. ( 英 文 ). Zhang Lijun; Yang Yajun;Zhang Lidong; Guo Shengzhe; Wang Wuli;Zheng Shaolin. Acta Geologica Sinica, 2007,81(3): 357-364Based on the subdivision into three membersof the Lower Cretaceous Jiufotang Formation inwestern Liaoning, this paper deals mainly withthe division and correlation of precious fossilbird-and reptile-bearing beds of the formation inthe Dachengzi, Chaoyang, Dapingfang-Meileyingzi and Fuxin-Yixian basins. Amongthem, the precious fossil-bearing beds in theDachengzi Basin may be recognized as the XidagouBed of the second member and the YangcaogoudonggouBed of the third member; thosein the Chaoyang Basi...2008040452中 国 西 北 地 区 早 白 垩 世 的 巨 大Therizinosauroid ( 兽 脚 亚 目 恐 龙 ) = ALarge Therizinosauroid(Dinosauria:Theropoda)from the Early Cretaceous of NorthwesternChina. ( 英 文 ). Li Daqing; Peng Cuo; You Hailu;Lamanna M C; Harris J D; Lacovara K J; ZhangJianping. Acta Geologica Sinica, 2007, 81(4):539-549We herein describe an associated partial postcranialskeleton of a theropod dinosaur discoveredin the Lower Cretaceous Xinminpu Groupof the Yujingzi Basin,in the Jiuquan area ofGansu Province,northwestern China.Features ofits humerus,such as strongly expanded proximaland distal ends,a well developed medial tuberosity,distalcondyles expressed on the humeral cranialsurface,and a hypertrophied entepicondyle,definitivelyestablish the therizinosauroidaffinities of the specimen.It differs fromother ther...2008040453中 国 南 方 的 第 一 只 鸭 嘴 龙 = The First HadrosauridDinosaur from Southern China. ( 英 文 ).Mo Jinyou; Zhao Zhongru; Wang Wei; Xu Xing.Acta Geologica Sinica, 2007, 81(4): 550-554A new hadrosaurid dinosaur,Nanningosaurusdashiensis gen.et sp.nov.,is described based onan incomplete skeleton from the Late Cretaceousred beds of the Nalong Basin,Guangxi,southernChina.Diagnostic features for the new taxon includethe presence of a tall and sharply peakeddorsal process of the maxilla with reduced processof the jugai and a distinct lacrimalfacet,gracile humerus with low,rounded deltopectoralcrest,mandibular condyle of the quadratetransversly broad with reduced paraquadratenotch,de...2008040454摩 洛 哥 古 新 世 一 长 鼻 Dyrosaurid( 鳄 形 动物 , 中 真 鳄 类 ): 系 统 发 生 及 古 生 物 地 理 学意 义 = A long-snouted Dyrosaurid (Crocodyliformes,Mesoeucrocodylia) from the Paleoceneof Morocco: Phylogenetic and Palaeobiogeographicimplications. ( 英 文 ). Jouve S; BouyaB; Amaghzaz M. Palaeontology, 2008, 51(2):281-294New material of a long-snouted dyrosauridhas been discovered in the Paleocene of Morocco.It consists of a well-preserved skull withembedded mandible and four dorsal vertebrae.The particularly elongate snout, proportionallythe longest of all known dyrosaurids, allows preciseidentification of this material as Atlantosuchuscoupatezi Buffetaut, 1979a, and presentationof an emended diagnosis for this speciespreviously known only from a mandibular symphysis.A phylogenetic analysis of the dyrosauridsindicates a close relationship between A.coupatezi and Rhabdognathus. It also confirms aprevious hypothesis that Congosaurus is distinctfrom Hyposaurus. It is more closely related toAtlantosuchus than Hyposaurus. The analysisalso allows palaeobiogeographic interpretationsto be made. Dyrosaurids ranged from North Africato other areas. They were rare during theMaastrichtian and endemic to each continent atthis time. Competition with large marine reptiles,such as mosasaurs, limited their dispersal duringthe Late Cretaceous. The disappearance of theserivals during the 'K-T crisis' enabled their diversificationand widespread dispersal during thePaleocene, with the same genera present on severalcontinents.2008040455联 合 王 国 牛 津 郡 中 侏 罗 世 MegalosaurusBucklandii( 恐 龙 , 兽 脚 亚 目 ) 的 分 类 位 置 =The taxonomic status of Megalosaurus Bucklandii(Dinosauria, Theropoda) from the MiddleJurassic of Oxfordshire, UK. ( 英 文 ). Benson R J;Barrett P M; Powell H P; Norman D B. Palaeontology,2008, 51(2): 419-424The lectotype of the Middle Jurassic theropoddinosaur Megalosaurus bucklandii, a right dentary,can be diagnosed on the basis of twounique characters: a longitudinal groove on theventral part of the lateral surface of the dentaryand a slit-like anterior Meckelian foramen. Thistaxon, the first dinosaur to be scientifically described,is therefore valid. Currently, however,no further material can be referred to this species138
with any certainty. Megalosaurus bucklandiioccupies an uncertain systematic position but isnot an abelisaurid or coelophysoid. Additionally,it does not possess the diagnostic dentary charactersthat are present in all known spinosauroids.Owing to this uncertainty, use of the familyMegalosauridae should be discontinued untilsuch time as its systematic position becomesclearer.2008040456中 国 辽 宁 省 一 新 翼 龙 及 翼 龙 类 的 系 统 发 育 和颈 椎 骨 的 趋 同 演 化 = A new Pterosaur from theLiaoning Province of China, the phylogeny ofthe Pterodactyloidea, and convergence in theircervical vertebrae. ( 英 文 ). Andres B; Ji Qiang.Palaeontology, 2008, 51(2): 453-469The largest known flying organisms are theazhdarchid pterosaurs, a pterodactyloid cladepreviously diagnosed by the characters of theirextremely elongate middle-series cervical vertebrae.The named species of the Azhdarchidae arefrom the Late Cretaceous. However, isolatedmid-cervical vertebrae with similar dimensionsand characters have been referred to this groupthat date back to the Late Jurassic, implying analmost 60 million year gap in the fossil record ofthis group and an unrecorded radiation in theJurassic of all the major clades of the Pterodactyloidea.A new pterosaur from the Early Cretaceousof Liaoning Province of China, Elanodactylusprolatus gen. et sp. nov., is described withmid-cervical vertebrae that bear these azhdarchidcharacters but has other postcranial material thatare distinct from the members of this group.Phylogenetic analysis of the new species and thePterodactyloidea places it with the Late Jurassicvertebrae in the Late Jurassic–Early CretaceousCtenochasmatidae and reveals that the charactersof the elongate azhdarchid vertebrae appearedindependently in both groups. These results arerealized though the large taxon sampling in theanalysis demonstrating that the homoplasticcharacter states present in these two taxa wereacquired in a different order in their respectivelineages. Some of these homoplastic characterswere previously thought to appear once in thehistory of pterosaurs and may be correlated tothe extension of the neck regions in both groups.Because the homoplastic character states in theAzhdarchidae and Ctenochasmatidae are limitedto the mid-cervical vertebrae, these states aretermed convergent based on a definition of theterm in a phylogenetic context. A number ofnovel results from the analysis presented producea reorganization in the different species andtaxa of the Pterodactyloidea.2008040457加 拿 大 北 极 群 岛 Melville 岛 新 的 侏 罗 纪 上 龙化 石 = A new Jurassic pliosaur from MelvilleIsland, Canadian Arctic Archipelago. ( 英 文 ).Sato T; Wu Xiao-chun. Canadian Journal ofEarth Sciences, 2008, 45(3): 303-320A partial skeleton of a plesiosaur (Reptilia:Sauropterygia) from the Hiccles Cove Formation(Middle Jurassic: Callovian) of Melville Island,Canadian Arctic Archipelago, is the first marinereptile fossil with well-preserved skull from theCanadian Arctic and represents a new genus andspecies of Rhomaleosauridae (Borealonectesrusselli). The Rhomaleosauridae are a problematicgroup, and a review of the current status ofincluded taxa is given prior to the description ofthe Canadian material. The holotype and onlyknown specimen of the new species consists ofthe skull, anterior cervicals, and right forelimb.The new taxon is characterized by the large prefrontaland the configuration of the postorbitalbar in which the postfrontal is excluded from thesupratemporal fenestra; these are potentiallyunique features among rhomaleosaurids. It exhibitsa combination of primitive and derivedcharacteristics that are variable amongrhomaleosaurids, such as the absence of the dorsomedianforamen and anterior pterygoid vacuityon the palate, and the presence of straightshaft of humerus. The occurrence of this specimensuggests a global distribution ofrhomaleosaurids, and it is also significant as oneof the few Jurassic plesiosaurs known fromNorth America.2008040458加 拿 大 不 列 颠 哥 伦 比 亚 中 北 部 Sustut 盆 地 一鸟 臀 类 恐 龙 = An ornithischian dinosaur fromthe Sustut Basin, north-central British Columbia,Canada. ( 英 文 ). Graves M C; Arbour V M. CanadianJournal of Earth Sciences, 2008, 45(4):457-463Dinosaur bones were discovered in 1971 duringuranium exploration in the Sustut Basin,northern British Columbia, Canada. These boneshave more recently been prepared and describedand represent an indeterminate cerapodan dinosaur.Although dinosaur bones have been reportedfrom British Columbia before now, thisspecimen represents their earliest recorded discoveryfrom the province. The bones were collectedfrom loose blocks in a talus slope, nearthe intersection of Birdflat Creek and the SustutRiver. They are encased in hard siltstone thatshares characteristics with adjacent outcrops ofthe Upper Cretaceous Brothers Peak Formation.Bones collected include the right humerus, rightradius, the distal portion of the right tibia andfibula, two right pedal phalanges, including twounguals, and several unidentifiable fragments.139
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第 4 卷 第 4 期古 生 物 学
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Fossils, i.e. remains of living org
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nus, a new ichnospecies of Fuersich
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以 松 柏 类 和 盾 籽 类 为
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Island, Papua New Guinea. ( 英 文
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A C. Canadian Journal of Earth Scie
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mated depositional interval of 10 t
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北 海 古 近 纪 一 种 新 型
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scabrate-verrucate, and rugulate mi
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the Tetori Group in the Kuzuryu are
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during the Late Pleistocene are rec
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ane have been previously reported f
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Albian-early Paleocene in the Anady
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Poaceae and Plantago lancelata. shr
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the eastern segment of its southern
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member of the La Despedida Formatio
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lembaye (Maastricht region) and fro
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tion the ontogenetic stage of the p
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早 期 种 子 植 物2008040123
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中 国 内 蒙 古 东 北 部 晚
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2008040137辽 西 北 票 中 侏
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综 论2008040144低 PH 值 对 Amm
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ut poorly studied. Dimorphism (or t
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and migration towards the sediment-
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schackoinids, indicating that the e
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( 英 文 ). Nomaki H; Yamaoka A; S
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新 西 兰 Otago 南 海 岸 全
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Scotland. ( 英 文 ). Murray J W.
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A three-year sediment trap experime
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a habitat disturbance and is nearly
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Pitted surfaces associated with wal
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Saanich than exists today sedimento
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was pulsed, with major declines usu
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mycelium, was observed where reticu
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suggest that reticulopodia are self
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to OIS 3, compared to the more stab
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Patterson R T. Journal of Foraminif
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known xenophyophore species grouped
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aminiferal Research, 2001, 31(4): 2
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arctic environment over this critic
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Semeniuk T A. Journal of Foraminife
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sible to make production calculatio
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