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cated, although fully marine conditions were notreached. The dinoflagellate record throughoutthe Cyprina Clay at Ristinge Klint is thereforeone of increasing marine influence. Summer seasurfacetemperatures approached, and may haveexceeded, 26–28°C during early Eemian time,indicating temperatures at least 5°C warmer thanat present. These warm conditions persisted tothe top of the record at Ristinge Klint. No evidenceexists at Ristinge Klint for the influence ofArctic watermasses, and the paucity of coldwaterspecies throughout the section reflectsmild winter temperatures in the southwesternBaltic Sea. The new species Spiniferites ristingensisis formally described, and the name Operculodiniumcentrocarpum var. cezare de Vernal,Goyette & Rodrigues, 1989 is validated.2008040095俄 罗 斯 堪 察 加 东 北 部 半 岛 渐 新 世 古 生 物 特 征新 资 料 = New data on paleontological characteristicof the Oligocene in the Il’pinskii Peninsula,northeastern Kamchatka. ( 英 文 ).Gladenkov A Yu; Gladenkov Yu B. Stratigraphyand Geological Correlation, 2007, 15(2): 231-235Fossil diatom algae first found in the Paleogenemarine succession (Alugivayam Formation)of the Il’pinskii Peninsula, northeastern Kamchatkaare studied, and new data on molluscanassemblages from the same sequences are presented.Some of the diatom forms identifiedsuggest the Oligocene age of their host deposits.This is consistent with earlier inference frombenthic groups of marine organisms.2008040096根 据 孢 囊 化 石 , 重 新 确 定 美 国 西 部 内 陆 地 区阿 尔 必 阶 - 赛 诺 曼 阶 界 线 = Re-evaluation ofthe Albian–Cenomanian boundary in the U.S.Western Interior based on dinoflagellate cysts.( 英 文 ). Oboh-Ikuenobe F E; Benson D G; ScottR W; Holbrook J M; Evetts M J; Erbacher J.Review of Palaeobotany and Palynology, 2007,144(1-2): 77-97The position of the Albian–Cenomanianboundary in the U.S. Western Interior Basin hasbeen the subject of debate because the ammonitesand foraminifers that define the boundaryare endemic. Traditionally, the boundary, as definedin Europe by planktonic foraminifers andammonites, is correlated with the last occurrenceof the ammonite genus, Neogastroplites [Reeside,J.B., Cobban, W.A., 1960. Studies of theMowry Shale (Cretaceous) and contemporaryformations in the United States and Canada. U.S.Geological Survey Professional Paper 355, 126pp]. More recently, the boundary was correlatedwith the first occurrence of Metengonoceras teigenensis[Cobban, W.A., 1951. Colorado shaleof central and northwestern Montana andequivalent rocks of Black Hills. American Associationof Petroleum Geologists Bulletin 35,2170–2198]. These ammonites are associatedwith bentonites, the ages of which have beenextrapolated to the type region of France to datethe base of the Cenomanian from the WesternInterior Basin. However, since cosmopolitandinoflagellates are common to this region andthe European reference sections where theboundary is defined, they can be used to reevaluatethe position of the Albian–Cenomanianboundary in the Western Interior Basin. In ourstudy, 224 samples from 29 outcrop sections inMontana, Wyoming, Colorado, Oklahoma andNew Mexico were analyzed for dinoflagellatecysts, as well as other palynomorphs, foraminifers,bivalves and ammonites; these fossilswere used for graphic correlation. The recoveryand preservation of the dinoflagellate cysts variedfrom poor to good, and diversity varied fromlow to moderate. Typical Late Albian to EarlyCenomanian taxa, including Ovoidinium verrucosum,Ovoidinium scabrosum and Palaeohystrichophorainfusorioides, dominate the assemblages;however, dinoflagellate ranges in the fivesections in which the neogastroplitid zones aredefined (Arrow Creek, Ayers Ranch, Belt Butte,Geyser, Teigen) suggest correlation with theuppermost Albian. Dinoflagellate ranges wereconfirmed in additional Montana, Wyoming andnorthern Colorado sections by a few diagnostictaxa (Aptea polymorpha, Apteodinium grande,Batioladinium jaegeri, Luxadinium propatulum,Chichaouadinium vestitum), and they weregraphically correlated with published Europeanranges. The result is that the Albian–Cenomanian boundary correlates with the97 million year old Clay Spur Bentonite.2008040097沿 东 欧 地 台 边 缘 分 布 的 里 菲 期 叠 层 石 组 合 =Riphean stromatolitic formations fringing theEast European platform. ( 英 文 ). Raaben M E.Stratigraphy and Geological Correlation, 2007,15(1): 30-40Riphean stromatolitic formations flank theEast European epi-Karelian platform only in theeast and northeast. They are traceable as long(over 3600km) relatively narrow belt consistingof two rectilinear segments, one running alongthe Urals western flank from southern extremityof the Bashkirian meganticlinorium to thePolyudov Ridge and the other one extendingfrom the southern and central Timan to theKil’din Island and northern Norway. Within thebelt there are known stromatolitic formations ofall Riphean erathems: the Lower and MiddleRiphean stromatolitic buildups are confined to29