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中 国 内 蒙 古 东 北 部 晚 古 生 代 安 加 拉 沉 积 中 矿化 松 柏 类 木 化 石 的 分 类 学 研 究 及 及 古 气 候 意义 = Taxonomic investigations on permineralizedconifer woods from the Late Paleozoic Angarandeposits of northeastern Inner Mongolia,China and their palaeoclimatic significance. ( 英文 ). Zhang Wu; Wang Yongdong; ZhengShaolin; Yang Xiaoju; Li Yong; Fu Xiaoping; LiNan. Review of Palaeobotany and Palynology,2007, 144(3-4): 261-285A diverse fossil conifer wood assemblage wasdescribed from the Late Paleozoic Angaran depositsin Inner Mongolia (=Nei Mongol) ofnortheastern China. The fossil wood materialswere collected from the Upper CarboniferousBaoligemiao Formation in Sunitezuo Qi and theMiddle Permian Zhesi Formation in Xi UjimginQi, northeastern Inner Mongolia, including fourspecies. Among them, Sinopalaeospiroxylonbaoligemiaoense gen. et sp. nov. represents anew taxon of secondary xylem with Araucarioidtypeand transitional type of radial wall pitting,and tertiary taxoid spiral thickenings. It is characterizedby the pinioid pitting and nodularthickening on the end wall on the horizontal wallof rays. Sclerospiroxylon neimongolense sp. nov.is represented by a xylem cylinder containing thesecondary and primary xylem and pith. The tracheidson the radial wall yield Araucarioid-typepitting as well as a taxoid tertiary spiral thickening.The primary xylem is of endarch, and thepith consists of heterogenous cells. The sclerochymacells are scattered among the parenchymatoustissues. Zalesskioxylon zhesiense sp. nov.is a wood species with very similar anatomicalfeatures to those of the genus Araucarioxylon. Itdiffers, however, in having simple and noborderedcross-filed pitting in Z. zhesiense.Chapmanoxylon xiugiense (Zhang and Zheng)comb. nov. is recognized based upon wood xylemscontaining Araucarioxylon-type secondaryxylem, endarch primary xylem and a pith yieldinghomogenous parenchyma cells. These coniferwood taxa show more or less growth rings inthe secondary xylem. Such fossil woods fromthe Late Paleozoic deposits of northeastern InnerMongolia imply a warm moderate vegetationtype. It is a composition part of the NorthernBiogeographic Realm in China showing seasonalvariation of the palaeoclimate.2008040131北 半 球 高 纬 地 区 白 垩 纪 ( 阿 尔 必 期 - 阿 普 丁期 ) 松 柏 类 木 化 石 : 森 林 组 成 和 古 气 候 =Cretaceous (Albian–Aptian) conifer wood fromNorthern Hemisphere high latitudes: Forestcomposition and palaeoclimate. ( 英 文 ). HarlandM; Francis J E; Brentnall S J; Beerling D J. Reviewof Palaeobotany and Palynology, 2007,143(3-4): 167-196Permineralised conifer wood is abundant inCretaceous (Albian–Aptian) sediments in highnorthern latitudes (> 60°). The wood providesevidence of conifer-dominated forests that extendedacross the northern polar regions duringgreenhouse periods when the climate waswarmer than today. This study investigates thecomposition of the Cretaceous (Albian–Aptian)high latitude Northern Hemisphere conifer forestsusing wood from Spitsbergen, and Ellesmereand Axel Heiberg islands in the CanadianArctic Archipelago. Identification of the fossilwoods indicates that the conifers included Pityoxylon,Piceoxylon, Laricioxylon, Protopiceoxylon,Palaoepiceoxylon, Taxodioxylon, Juniperoxylon,Protocedroxylon, Araucariopitys,Xenoxylon, Cupressinoxylon and Taxaceoxylon.This study shows that Spitsbergen was dominatedby Taxodioxylon (25%) and in the CanadianArctic Pityoxylon (33%) was dominant.Climate analysis of the conifers indicates that thenorthern Cretaceous (Albian–Aptian) forests ofSvalbard grew in moist cool upland areas withwarmer temperate areas in the lowlands, probablywith rivers and/or swampy areas present.The forests of the Canadian Arctic probablygrew under slightly cooler conditions than onSvalbard, similar to northern Canada today.2008040132下 奥 地 利 州 Lunz 地 区 上 三 叠 统 苏 铁 类 叶 片化 石 蕉 羽 叶 (Nilssonia) 的 形 态 和 表 皮 解 剖特 征 = Morphology and epidermal anatomy ofNilssonia (cycadalean foliage) from the UpperTriassic of Lunz (Lower Austria). ( 英 文 ). Pott C;Kerp H; Krings M. Review of Palaeobotany andPalynology, 2007, 143(3-4): 197-217The Carnian flora from Lunz (Lower Austria)ranks among the richest and most diverse fossilfloras from the Upper Triassic. It is one of thefirst modern Triassic floras with bennettitaleans.Although this flora is often referred to in theliterature, modern taxonomic studies are mostlyabsent; only some of the reproductive structureshave been studied in detail. Many of the plantremains yield excellently preserved cuticles.During a systematic study of the Pterophyllumleaves from Lunz, it appeared that several speciespreviously accommodated in that taxonhave to be transferred to other genera. This paperdeals with four species that are transferred toNilssonia (cycadalean foliage); the macromorphologyand epidermal anatomy are describedand discussed. The following new combinationis introduced: Nilssonia riegeri nov. comb. Twonew species are described (i.e. Nilssonia lunzensisand Nilssonia neuberi) based on materialoriginally mentioned in a species list as Ctenis40