Showing papers in "Review of Palaeobotany and Palynology in 1985"

TL;DR: In this paper, an attempt is made to understand the various processes involved in leaf-assemblages formation by means of experiments and field observations, and the results show that these processes give a distorted picture of the past vegetation.

TL;DR: The arborescent lycopods dominated many coal-swamp plant communities of the Middle Pennsylvanian, and each species had determinate, dendritic crowns and each tree apparently reproduced during a short, unrepeated interval late in determinate growth.

TL;DR: A late Holocene relative and concentration pollen diagram of a core of a small pond at 1600 m altitude, in the Serra da Estrela (Portugal), shows the destruction of a montane Quercus-Betula forest around 4300 yr B.P. by fire and its replacement by heath.

TL;DR: The Early Silurian (Llandoverian) Tuscarora Formation in central Pennsylvania contains shale beds with an abundant and predominantly land-derived palynoflora as discussed by the authors.

TL;DR: The Cairngorm Mountains in Northeast Scotland display abundant evidence for glaciation and ice-wastage as mentioned in this paper, and it is pointed out that macrofossils provide a much more trustworthy basis for investigating the history of Pinus sylvestris in the area.

TL;DR: The analysis of 17 domesticated and 365 wild species from the New World tropics has revealed a large diversity of phytolith shapes that have varying levels of taxonomic significance, and a system is developed for their identification in archeological and geological sediments.

TL;DR: In this article, a section representing the closing phase of the Atlantic and the Early Subboreal was examined at centimeter intervals for all kind of micro- and macrofossils.

TL;DR: The presence of four late Triassic leptosporangiate fern species suggests a mid-to-late Carnian age for these strata, as was previously reported by several authors.

TL;DR: Cysts of five species of gymnodinialean dinoflagellates are described, and two major types were observed in these cysts: the “chasmic archeopyle” shows a linear to slightly curved rupture, and the "tremic Archeopyle" marks a circular to nearly circular hole.

TL;DR: The Bathonian sequence of the type area, around Bath, southwest England, yields diverse and well-preserved organic-walled microplankton floras dominated by ctenidodinioid dinoflagellate cysts, principally Ctenidinium combazii Dupin 1968, and Dichadogonyaulax sellwoodii Sarjeant 1975 together with lesser numbers of Korystocysta spp. as mentioned in this paper.

TL;DR: Actinocalyx bohrii gen. et al. as mentioned in this paper described small sympetalous flowers from the Upper Cretaceous (Santonian/Campanian) of Scania, southern Sweden, which are actinomorphic, hypogynous, and pentamerous.

TL;DR: The vegetation and fire history for the past 900 yrs. in northwestern Wisconsin is interpreted from pollen and charcoal analysis of cores from three lakes in Chippewa County, Wisconsin this article.

TL;DR: In this article, eleven diagrams from ten peat bogs or mires in the Aubrac Mounts are discussed; they are supported by 22 14C datings and the passage from the Wurmian Pleniglacial to the oldest Dryas (marked by the classic intercrossing of Pinus and Artemisia curves) is noted for the first time in the region.

TL;DR: This material provides the oldest evidence for early true fern diversification and abundant and diverse fructifications bearing in situ spores.

TL;DR: A detailed study of Pyrodinium bahamense Plate, based on samples from Puerto Rico and Jamaica (Antilles) and compared with the toxic material from New Guinea and the Philippines, concludes that the toxic and the non-toxic belong to the same taxon.

TL;DR: In this paper, the analysis of pollen and a variety of micro- and macrofossils and of the pollen density/influx of a section of peat deposits on marine clay from the Assendelver Polder (The Netherlands).

TL;DR: In this article, a peat core from the valley of the Mark river was analyzed for its pollen and diatom content, and the diatom spectra from the Subboreal part formed a series in which the successive assemblages revealed a lowering of the watwer-level (decreasing percentages of planktonic forms), and an evolution in the water from a somewhat more alkaline to an almost neutral condition.

TL;DR: A re-examination of the type material of Late Aptian dinoflagellate cyst taxa described by Eisenack has resulted in a variety of taxonomic revisions, and revised diagnoses are presented for the genus Pterodinium and seven other species.

TL;DR: Dinoflagellate cysts recovered from a core of sediments from Lake Zurich that were deposited during the first decades of this century support reconstruction of a Gonyaulax -type paratabulation.

TL;DR: Taeniocrada langii Stockmans is transferred to the new genus Stockmansia Fairon-Demaret on the basis of the morphology of its sporangia and its anatomical structure and the affinities of the plant remain obscure.

TL;DR: The morphological similarities between the sheaths of modern Gloeotrichia and Early Cretaceous Celyphus rallus Batten strongly suggests that the latter is a Mesozoic relative of extant blue-green algal species belonging to the family Rivulariaceae as discussed by the authors.

TL;DR: The discovery of this form allows for the description of several external features of Chaloneria -like plant bases and further demonstrates the diversity of isoetalean lycophytes in Carboniferous sediments.

TL;DR: The palynology of a series of Holocene sediments from the Scheldt river basin is described in this paper, where the changes in the vegetation do not follow the classic palynological zonation.

TL;DR: In this paper, Diatom analysis of a clayey Atlantic-Subboreal sequence from the western part of the Belgian coastal plain revealed the existence of intertidal conditions throughout, with the exception of a swampy lagoonal stage at the top of the basal peat.

TL;DR: In this article, the effects of altering oxidation and debris removal techniques during extraction on the resulting numerical composition of assemblages of organic-walled microphytoplankton (prasinophytes and "acritarchs") were analyzed.

TL;DR: Pollen morphological investigation of all seven species of the genus Carpococe found that the grains are 3-zonocolporate and have rugulate exines and thus match the pollen of the other genera of the Anthospermeae-Anthosperminae.

TL;DR: Limited knowledge of taxonomy, distribution, and ecology of taxa of vesicular-arbuscular mycorrhizal fungi precludes making paleoecological deductions from these fungal microfossils at this time, but this situation will change once a more extensive data base on modern and fossil taxa is established.

TL;DR: In this paper, a new method has been found useful in studying pyritized plant petrifactions under transmitted light, which is a peel technique but involving embedding of the specimen in paraffin wax of high melting point after slow, progressive infiltration by wax solutions in xylene, and treating the desired clean, smooth surface with concentrated nitric acid, the time depending on the quality of the material, and washing away the acid with ethyl alcohol.

TL;DR: In this article, an alete microscope with characteristic sculpture is described as new genus Heerisporites, which is known only from one sample of Early Miocene age (Upper Marine Molasse of northeastern Switzerland).