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member of the La Despedida Formation containthe endemic 'Transantarctic Flora', which reflectsmarginal marine conditions. The maximumabundance of Enneadocysta spp. reflects moreopen-sea conditions and a warming event duringthe late Middle Eocene. The lower part of theCabo Pena Formation has a high ratio of dinocyststo sporomorphs and an abundance ofNematosphaeropsis lemniscata, Reticulatosphaeraactinocoronata and Impagidinium spp.,suggesting an oceanic to outer neritic environment.Abundant Gelatia inflata and protoperidiniaceancysts indicate cool surface waters richin dissolved nutrients. These cold-water markersmay reflect the development of the AntarcticCircumpolar Current, an important event in thetransition from a greenhouse to an icehouse climatemode. Toward the top of the sections, thelower ratios of dinocysts to sporomorphs, as wellas the composition of the dinocyst assemblages,reflect a neritic rather than an oceanic setting.This palynological change may be due toeustatic sea-level lowering caused by coolingduring the latest Eocene-earliest Oligocene. Anew species, Spiniferites scalenus, is describedand the new combination Lingulodinium echinatumproposed; an emendation for the latterspecies is also proposed.2008040102森 诺 曼 阶 - 土 仑 阶 界 线 附 近 横 穿 大 西 洋 的 沟 鞭藻 囊 孢 生 物 地 层 学 = Trans-Atlantic dinoflagellatecyst stratigraphy across the Cenomanian-Turonian (Cretaceous) Stage boundary. ( 英 文 ).Dodsworth P. Journal of Micropalaeontology,2000, 19(part 1): 69-84The principal palynological proxy for theCenomanian-Turonian Stage boundary, the topof consistent/common Litosphaeridium siphoniphorum(a dinoflagellate cyst), occurs in GreenhornBed 73 at the international stratotype section,west of Pueblo, Colorado, USA. This datumoccurs in the same position, as indicated byplanktonic foraminifera (a few beds higher thanthe range top of R. cushmani), ammonites (upperpart of the S. gracile/M. geslinianum Zone) andgeochemistry (immediately below maximumdelta(13)C values), at Pueblo (Western InteriorBasin) and localities in southern England (Wessex-ParisBasin) and northern Germany (LowerSaxony Basin). Of over 100 dinoflagellate cysttaxa recorded from Pueblo and a correlative sectionat Lulworth, southern England, possibly asfew as six do not range into the Turonian. In theuppermost Cenomanian - lowermost Turoniansuccession at Pueblo, there are no consistent absencesof any common taxa (with four exceptions)and there is no evidence for a collapse incyst-forming dinoflagellate populations duringthe Cenomanian-Turonian boundary mass extinctioninterval/'oceanic anoxic event'. However,the composition of palynological assemblagesfrom the Upper Cenomanian appears to reflectpalaeoenvironmental stress and/or an increase inthe supply of land-derived and relatively nearshorepalynomorphs.2008040103值 得 注 意 的 光 球 类 (Tapajonites Sommer &van Boekel, 1963)( 草 绿 藻 ) 纹 饰 的 保 存 状况 = Note on the preservational nature of ornamentationin sphaeromorphs assignable to TapajonitesSommer & van Boekel, 1963 (Prasinaphyta?). ( 英 文 ). Turnau E. Journal of Micropalaeontology,2000, 19(part 2): 159-162Assemblages of Middle Devonian (Givetian)phytoplankton from the Holy Cross Mountainsinclude sphaeromorphs possessing blister-likeornamentation typical of the genus TapajonitesSommer & van Boekel, 1963. Study of thesculptural elements under high magnificationindicates the presence of patterns resemblingimpressions of pyrite crystals. It is suggestedthat ornamentation in Tapajonites, or at least insome sphaeromorphs assignable to that genus, isof a secondary nature.2008040104沟 鞭 藻 Suessiaceae 科 的 划 分 和 演 化 = Subdivisionof the dinoflagellate cyst Family Suessiaceaeand discussion of its evolution. ( 英 文 ).Palliani R B; Riding J B. Journal of Micropalaeontology,2000, 19(part 2): 133-137The recent description of Umbriadiniummediterraneense Bucefalo Palliani & Riding1997 from the Early Jurassic of central Italy andGreece has provided new information on thephylogeny of the dinoflagellate cyst FamilySuessiaceae. On the basis of the morphology ofthe five suessiacean genera, a subdivision of thefamily into two new subfamilies is proposed.These are the Late Triassic Suessioideae and theEarly Jurassic Umbriadinoideae. The evolutionof the Family Suessiaceae is related to the evolutionof scleractinian corals, largely on the basisof the similarity of their evolutionary patternsand geographical palaeodistributions.2008040105Gonyaulacaceae( 化 石 横 裂 甲 藻 纲 ) 的 一 个新 属 Ynezidinium = Ynezidinium, a new genuswithin the Gonyaulacaceae (fossil Dinophyceae).( 英 文 ). Lucas-Clark J; Helenes J. Journal ofMicropalaeontology, 2000, 19(part 2): 113-121Ynezidinium malloyi gen. nov., sp. nov,shows paratabulation details that indicate it belongsto the Family Gonyaulacaceae, subfamilyLeptodiniodeae, but which, in combination, distinguishit from previously described genera.32