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depositional settings of the Mediterranean Sea(Alboran Sea, South Adriatic Sea and IonianSea). The constant presence of benthic foraminiferathroughout the sapropels at 3000 m) indicate that theseverity of oxygen depletion at the time of sapropelonset increases with increasing water depth.Planktonic and benthic foraminiferal patternsalso document an interruption during sapropeldeposition, which allows for the recognition oftwo sapropel phases. In all basins, the short interruptionappears to be related to climatic deterioration,which led to the break in stratificationand, hence, to the re-oxygenation of bottom waters.Since the interruption of the time-equivalentsapropel intervals has been documented previouslyin other Mediterranean areas, these datasupport the recent theory that this interruptionmust have been a trans-Mediterranean phenomenonand that the interruption records a short excursionout of the periods of wet climate associatedwith precessional minima.2008040313瑞 士 侏 罗 地 区 晚 Oxfordian 期 有 孔 虫Mohlerinabasiliensis 与 Bacinella-Lithocodium 核 形 石 共 同 产 出 的 古 环 境 和 古生 态 意 义 = Co-occurrence of the foraminiferMohlerina basiliensis with Bacinella-Lithocodium oncoids: palaeoenvironmental andpalaeoecological implications (Late Oxfordian,Swiss Jura). ( 英 文 ). Vedrine S. Journal of Micropalaeontology,2008, 27(part 1): 35-44The stratigraphical and spatial distribution ofthe foraminifer Mohlerina basiliensis and Bacinella-Lithocodiumoncoids was studied in thelagoonal deposits of the oncoid-richHauptmumienbank Member from the Swiss JuraMountains (Late Oxfordian, NW Switzerland).Mohlerina basiliensis has a double-layered wallstructure (thick outer hyaline-radial calcite layerwith a lamellar structure and thin inner microgranularcalcite layer) and is preferentially foundin low-energy facies and associated with normalmarinebioclasts and Bacinella-Lithocodium oncoids.The distribution of Mohlerina basiliensisis relatively patchy. The 'distal' platform faciespresent a higher abundance and a more extensivestratigraphic occurrence of this foraminifer. Thetiming of the ecological evolution is given by thesequence- and cyclostratigraphic framework andillustrates the stepwise flooding of the platform.Bacinella-Lithocodium oncoids have diametersof a few millimetres to several centimetres andare composed of an alternation of Bacinella-Lithocodium meshwork and thin micritic laminae.They are found preferentially in low-energyfacies (bioclastic wackestones) of open lagoons.The distribution of Bacinella-Lithocodium oncoidsthrough time and space is also patchy;however, they appear more abundantly in 'distal'platform facies. This study reveals the cooccurrenceof Mohlerina basiliensis and Bacinella-Lithocodiumoncoids and thus suggestssimilar environmental conditions.2008040314Acarinina multicamerata( 有 孔 虫 新 种 ): 一 个新 的 古 新 世 - 始 新 世 酷 热 环 境 的 标 志 种 =Acarinina multicamerata n. sp (Foraminifera): anew marker for the Paleocene-Eocene thermalmaximum. ( 英 文 ). Guasti E; Speijer R P. Journalof Micropalaeontology, 2008, 27(part 1): 5-12During the Paleocene-Eocene thermal maximum(PETM), low to mid-latitude planktic foraminiferalassemblages were characterized byblooms of the surface-dwelling Acarinina.Among this group a new 'excursion taxon' isidentified, Acarinina multicamerata n. sp. Previously,this taxon was lumped together withAcarinina sibaiyaensis El-Naggar. Consideringthat A. sibaiyaensis already occurred prior to thehyperthermal event, both in open ocean andocean margin deposits, it is proposed that thesetaxa are differentiated in order to avoid taxonomicand biostratigraphic ambiguities. Acarininamulticamerata n. sp. occurred exclusivelyduring the PETM, hence this taxon represents anexcellent biostratigraphic marker of the PETM,while its common occurrence in various marinesettings makes it an excellent marker of SubzoneP5b or its new equivalent zone El.2008040315基 于 核 糖 体 DNA 序 列 的 Ammonia 属 ( 有 孔虫 ) 分 子 的 分 类 学 关 系 = Taxonomic relationshipsin the genus Ammonia (Foraminifera)based on ribosomal DNA sequences. ( 英 文 ).Holzmann M; Pawlowski J. Journal of Micropalaeontology,2000, 19(part 1): 85-95The genus Ammonia is a common benthicforaminifer which is widely distributed in nearshoremarine environments. Its large morphologicalvariability causes considerable difficultiesin species identification. In the present study,we investigated taxonomic relationships in Ammoniaby using a molecular approach based onribosomal DNA sequences. We obtained 149partial large subunit ribosomal DNA (LSUrDNA) sequences and 23 small subunit ribosomalDNA (SSU rDNA) sequences from 88living Ammonia specimens which were collectedfrom free-living populations in 14 localities.Sequence analysis revealed the presence ofeight distinct genotypic groups (T1-T7, T9) andone distinct genotype that is represented by onespecimen (T8). Examination of morphological101