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The middle Permian Cryptospirifer fauna(brachiopod) has hitherto been found in morethan 30 localities in the Yangtze Platform,SouthChina.Examination of data from various localitiesshows that it occurs stratigraphically in threeintervals in the range from the upper Kungurianto Wordian.In the Baoshan block in westernYunnan the fauna occurs in the basal part of theDaaozi Formation and is of possibly an earlyWordian age.Outside China the Cryptospiriferfauna has been reported from central and northwestI...2008040352智 利 北 部 科 顿 迪 里 拉 奥 陶 纪 腕 足 动 物 和 笔 石的 首 次 记 录 = First record of Ordovicianbrachiopods and graptolites from Cordon de Lila(Puna de Atacama),Northern Chile. ( 英 文 ).Benedetto J L; Niemeyer H; Gonzalez J; BrussaE D. Ameghiniana, 2008, 45(1): 3-12Brachiopods and graptolites are reported forthe first time from the Quebrada Grande Formationexposed at Cordon de Lila, south of theSalar de Atacama. The stratigraphic succession,over 1000m thick, consists of conglomeratesinterbedded with sandstones and shales. Thecalcareous microconglomerates and calcareniteslaying near the base of the unit have yielded thebrachiopods Paralenorthis sp., Monorthis transversaBenedetto, and Mollesella? sp. The threetaxa have been recorded elsewhere in the Sierrade Famatina, western Argentina, from beds ofwell-constrained Arenig age (O.. evae -B. navisconodont zones). The graptolite fauna recoveredc. 300 m above the brachiopod levels consists ofTetragraptus sp. and Cryptograptus? sp., suggestinga Yapeenian-early Darriwilian age (approximatelylate Arenig-early Llanvirn of theBritish Series). This discovery is significant as itconstitutes the westernmost occurrence of Ordovicianmarine faunas in the Argentine-ChileanPuna region, and supports a paleogeographicconnection between the western Puna Basin andthe Famatina volcaniclastic belt.软 体 动 物2008040353种 - 属 比 率 反 映 海 洋 双 壳 类 范 围 扩 张 和 生 物 多样 性 的 全 球 历 史 = Species–genus ratios reflecta global history of diversification and range expansionin marine bivalves. ( 英 文 ). Krug A Z;Jablonski D; Valentine J W. Proceedings of theRoyal Society B: Biological Sciences, 2008,275(1639): 1117-1123The distribution of marine bivalve speciesamong genera and higher taxa takes the form ofthe classic hollow curve, wherein few lineagesare species rich and many are species poor. Thedistribution of species among genera (S/G ratio)varies with latitude, with temperate S/G's fallingwithin the null expectation, and tropical and polarS/G's exceeding it. Here, we test several hypothesesfor this polar overdominance in thespecies richness of small numbers of genera. Wefind a significant positive correlation betweenthe latitudinal range of a genus and its speciesrichness, both globally and within regions. Genusage and species richness are also positivelyrelated, but this relationship breaks down whenthe analysis is limited to genera endemic to climatezones or with narrow latitudinal ranges.The data suggest a link between speciation andrange-expansion, with genera expanding out ofthe tropical latitudinal bins tending to speciatemore prolifically, both globally and regionally.These genera contain more species within climatezones than taxa endemic to that zone.Range expansion thus appears to be fundamentallycoupled with speciation, producing theskewed distribution of species among genera,both globally and regionally, whereas clade longevityis achieved through extinction—resistance conferred by broad geographicalranges2008040354克 里 米 亚 山 Berriasian 期 菊 石 亚 纲 新 考 米 菊石 科 Malbosiceras 属 和 Pomeliceras 属 的 代表 = Representatives of genera Malbosiceras andPomeliceras (Neocomitidae, Ammonoidea) fromthe Berriasian of the Crimean Mountains. ( 英 文 ).Arkad’ev V V; Bogdanova T N; Lysenko N I.Stratigraphy and Geological Correlation, 2007,15(3): 277-296The revised representatives of ammonite generaMalbosiceras and Pomeliceras from the Berriasianof the Crimean Mountains are classedwith seven species, four of the first genus [M.malbosi (Pictet), M. chaperi (Pictet), M. broussei(Mazenot), M. pictetiforme Tavera] and three ofthe second one [P. aff. boisseti Nikolov, P. breveti(Pomel), P. (?) funduklense Lysenko etArkadiev sp. nov.]. The identified species aredescribed. The genus Mazenoticeras is consideredas synonym of Malbosiceras. The abovespecies prove that all the Berriasian zones(jacobi, occitanica and boissieri) are characteristicof corresponding deposits in the CrimeanMountains.2008040355克 里 米 亚 山 Berriasian 阶 上 带 标 志 菊 石 化 石Fauriella boissieri = Ammonite Fauriella boissieri(Pictet), the index species of the Berriasianupper zone from the Crimean Mountains. ( 英 文 ).Arkad’ev V V. Stratigraphy and GeologicalCorrelation, 2007, 15(2): 185-192112