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Après une mise au point chronostratigraphique sur l'étage Murgabien, une analyse biostratigraphique de trois îles grecques: Hydra, Crète et Mytilène est présentée. Le Murgabien moyen et supérieur est caractérisé par Neoschwagerina craticulifera et Chusenella conicocylindrica à Hydra, par Neoschwagerina margaritae et des Staffellidae en Crète, et pour la première fois à Mytilène par Neoschwagerina...
Dans l'Atlas Tunisien central et méridional, le Trias moyen? et supérieur à dominante évaporitique se localise dans des zones de bourrage à l'intersection des accidents profonds NS et EW (dômes du Rhéouis et de Sbiba), ou à la base de décro-chevauchements alpins (Axe Nord-Sud, Dorsale Tunisienne). Peu fossilifère, ce Trias renferme toutefois deux associations de foraminifères, l'une ladino-carnienne,...
La famille des Loeblichiidae Cummings emend. Rauser-Chernousova et al. (1996) est révisée et subdivisée en trois sous-familles: Loeblichiinae Cummings emend., Spinoendothyrinae subfam. nov., Dainellinae subfam. nov. Cette dernière est étudiée en détail et ses genres sont redécrits: Dainella emend., Lysella emend., Paralysella gen. nov., Bessiella emend. (= Florennella), Paradainella, Bozorgniella...
The multidisciplinary study of borehole Ombrone S1, sampled in the Grosseto plain, near the Ombrone river mouth, provides new data about sea-level changes during the Holocene in central Tyrrhenian Sea. The palaeontological analysis of the borehole highlights data concerning the foraminifers and ostracods useful to the palaeoenvironmental interpretation. Moreover, geochemical analyses (δ 1 ...
Three gravity cores were collected in north-western Ross Sea (Coulman Island and Cape Adare areas) during 1998 and 1999 ''Progetto Nazionale Ricerche in Antartide''. Several carbonate-rich levels, from Late Pleistocene to Holocene in age, interbedded with glacial marine sequences were recovered. Examination of the compositional characters (X-ray structure, texture, water, TOC and CaCO 3 contents)...
Bryozoan and foraminiferal assemblages from a core drilled in the Kusdili (Kadikoy, Istanbul) Upper Pleistocene-Holocene sequence were studied. Assemblages are absent from the very basal and top parts but they are well represented all along the middle part of the sequence. All the species found presently live in the Mediterranean. In the area sedimentation seemingly started about 13 000 years ago...
Thirty-five species belonging to 21 genera of foraminifers are distinguished from allochthonous limestone blocks contained within the autochthonous mudstones and sandstones of the Carnian Tanoura Formation, Kurosegawa Terrane of West Kyushu (SW Japan). These blocks are considered to be Anisian in age, based on the occurrence of two foraminifers widely distributed in the Anisian of the Tethyan Realm,...
The Aladag Mountains at the western end of the eastern Taurides, southern Turkey, are composed of nappe structures imbricated in the Late Cretaceous by ophiolite emplacement. The Cataloturan Nappe contains Mississippian (i.e., Early Carboniferous) deep-water (basinal-lower slope) facies in the lower part and shallow-water (shelf edge) facies in the upper part. These Mississippian strata belong to...
Stratigraphic sections and microfossils samples from the upper part of the “Graptolitic Shales-Orthoceras Limestones” and from the Camprodon Formation lying in the area of Camprodon, eastern Pyrenees, Spain, have been studied. Some beds at the top of the “Graptolitic Shales-Orthoceras Limestones” correspond to the Torres Member of the Rueda Formation, and conodont faunas, indicating a Lochkovian age,...
Foraminiferal assemblages in laminites cropping out at the Bric (i.e. Hill) della Muda (Nizza Monferrato, Piedmont, Northwestern Italy) document deep marine conditions during the early Messinian, spanning a time-interval approximating, or slightly wider than the stratigraphic range of Globorotalia nicolae (6.82–6.72Ma). Fluctuations in abundance of planktonic warm-water oligotrophic taxa and cold-water...
An uppermost Permian–Lower Triassic biota of brachiopods, conodonts, algae and foraminifers from the Pamucak and Kokarkuyu formations at Çürük Dağ (Antalya, Turkey) is here described. The brachiopods belong to two different assemblages: a lower assemblage, early Wuchiapingian in age, with Spinomarginifera cf. S. helica, Spinomarginifera cf. S. iranica, Alatorthotetina sp. ind., Orthothetina sp. ind...
Microfacies analyses performed on the latest Permian Wujiaping Formation at Laren (Guangxi Province, South China) show that the bioclastic-rich limestones of Late Permian age contain a rich and well-diversified foraminiferal fauna. This fauna is here revised in order to be compared with time-equivalent levels of southern Iran and southern Turkey. Some new and unexpected phylogenetic trends are highlighted...
During the Messinian, the Mediterranean area experienced fast and prominent paleoenvironmental changes, culminating in the so-called Messinian Salinity Crisis, with the deposition of the evaporitic series. This work investigates the micropaleontological assemblages in the pre-evaporitic sediments of the Sant’Agata Fossili Marls (SAF) of the Pollenzo section (Cuneo area, North Western Italy). A semiquantitative...
This paper summarizes the results of investigations carried out in the Mokrá quarry since 2006 on the biostratigraphy of the Tournaisian-Visean (T-V) boundary interval. It also integrates previous results obtained by J. Kalvoda and collaborators. The main focus is on the boundary itself, but stratigraphically lower and higher levels have been investigated as well to provide a biostratigraphical context...
The taxonomic revision of the carbonate microbiota of the limestone lenses intercalated into the Carboniferous siliciclastic series of Balia-Maden (Turkey) shows that most lenses are early or middle Brigantian in age (latest Visean), only a single lens being of younger age (late Serpukhovian). Calcareous microbiota are abundant in the Balia-Maden lenses carbonates. Microfacies analysis shows the dominance...
The oldest occurrences of the monothalamous foraminifer species Amphitremoida longa Nestell and Tolmacheva and A. laevis Nestell and Tolmacheva are found in the San Juan Formation together with conodonts of the Oepikodus evae Zone of the Floian (Lower Ordovician), in the Salagasta 2 section, southern Precordillera, Argentina. These discoveries represent the oldest record for foraminifers in South...
A moderate diversity biota of foraminifers, algae and calcareous microproblematica is recorded from the Lower Carboniferous Yindagindy Formation within the intracratonic Southern Carnarvon Basin in Western Australia. Very shallow metahaline to hypersaline conditions are suggested. The palaeobotanical components are sporadic calcitarcha, tuberitinaceans, codiaceans Orthriosiphon? sp. 1, dasycladaleans?...
The Qingyan Biota is one of the most diverse biota among the global Middle Triassic fossil assemblages, yielding more than 300 species belonging to 17 fossil groups, and marking the radiation of benthic organisms after the Permian-Triassic mass extinction. This study aims to uncover the detailed foraminiferal and algal recovery dynamics through the Early to Middle Triassic at the Qingyan section in...
The Vegas de Sotres section (Cantabrian Mountains, Northern Spain) spans a continuous record of upper Viséan-Serpukhovian (Mississippian) marine carbonates. It contains distinctive bioclastic pale grey nodular and black limestones of the upper part of the Alba Formation, representative of more shallower-water facies than the classically described deeper-water red griotte limestones of the formation...
The “calcaires à Productus” of the Montagne Noire (Aude-Hérault, southern France) are carbonate lenses embedded within a thick Carboniferous siliciclastic complex. Foraminiferal assemblages in some of the larger carbonate lenses are typically representative of the late Viséan and Serpukhovian. Eleven new species of foraminifers are described: Hemidiscopsis variabilis, H. pilleae, Planohowchinia rara,...
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