Premiere decouverte d'une faune de petits mammiferes dans le Paleogene du bassin d'Aurillac (Cantal): Implications stratigraphiques

The so-called “série carbonatée” of Aurillac-Arpajon basin is generally ascribed to the upper Oligocene; a newlydiscovered micrommalian fauna shows that the basis of this sequence is really older and at least of a middle oligocene age.     

Cherasco (Piemont):un nouveau gisement de poissons fossiles du Messinien continental d'Italie

The study of the material gathered in a new locality of fossil Fishes found in the messinian marls, near Cherasco (Piedmont, Italy), leads one to point out the occurrence of three different species (one of which is new) in this locality. The analysis of the process of pachyostosis which seems to have affected in a selective way some of their representatives is made possible by the detailed investigation of the Cyprinodontid and Gobiid Fishes. In the light of this analysis, the taxonomic status of the genus Pachylebias WOODWARD is reevaluated. From a palaeoecological and palaeogeographical point of view, the locality of Cherasco seems to fit with an ancient water-body with a variable salt-content, which may have been more or less temporarily connected with the sea.     

Description de quelques nouvelles espèces de Follicucullidae et d'Entactinidae (Radiolaires polycystines) du permien du Japon

Six new species of radiolarians from the Upper Permianof Kamigori (SW Japan) are introduced. They represent a part of a rich fauna, the whole of which will be detailed in an other paper.     

Éléments de biogéographie et d'écologie desMollusques Quaternaires et actuels du banc d'Arguin (Mauritanie)

Situated in arid area, the «banc d'Arguin landscomposes a littoraly and sandy biotope. Some stony headland could be found on the sea side.The malacofauna belongs to the senegalian type but look impoverished. Therefore, one can found some lusitanian species mainly on stones and six endemic species of the senegalo-mauretanian littoral. With the same lusitanian influences and the same endemic species, the quaternary fauna looks like the actual one belonging to the senegalian type.     

Contribution a l'etude biostratigraphique du Cretace superieur d'une coupe du Massif du Braus (Aples Maritimes,SE France)

The Cretaceous beds of the “Massif du Braus” contains a rich planctonic microfauna. A biostratigraphic study of this country is precised from Lower Cenomanian to Middle Campanian. Planktonic forminifera and Nannoplankton assemblages and events recognized in a continuous section in the “Massif du Braus” are given and discussed. The stratigraphical distribution of the different species is presented in three figures.     

Composes halogenes d'une algue rouge,Falkenbergia rufolanosa tetrasporophyte d' Asparagopsis armata

Water extraction of fresh Falkenbergia rufolanosa followed by water-ether partition, yielded halomethanes, polyhalo ethyl and methyl acetates and especially polyhalo acetones. It is the first example of polyhalo compounds extracted from a tetrasporophyte in the Bonnemaisoniaceae.     

Winwaloeusia,genre nouveau d'Acritarche du Devonien

Any Acritarchs that previously were included in the genus Veryhachium (DEUNFF 1954) are transferred in the new genus Winwaloeusia.     

Trilobites d'affinité bohémienne dans l'Éodévonien des Pyrénées centrales françaises

In the upper Adour valley, a series attributed to the Carboniferous yield conodonts and a variegated trilobite fauna with exclusively bohemian affinity. The trilobite fauna is represented by six families, the most of them being described in the Pyrénées for the first time. Trilobites indicate the Praguian whereas conodonts upper Lochkovian-Praguian age. A new unnamed subspecies of Crotalocephalus sternbergi (Boeck, 1827) is described.     

Composes phenoliques du latex d'Hevea brasiliensis: aglycones

The latex of Hevea brasiliensis; clone PR 107, contains from 160 to 1100 μg total phenolics per ml. This wide variability is associated with season, tapping system and application or not of a stimulant (Ethrel). The following aglycones have been identified in hydrolysed extracts: vanillic, salicyclic, syringic, gentisic, p- and m-hydroxybenzoic and protocatechuic acids; scopoletin, aesculetin and coumarin; ferulic, sinapic, caffeic, o- and p-coumaric acids; quercetin and kaempferol; tyrosine and dihydroxyphenylalanine. Flavans and condensed tannins are also present in latex.     

L'etude des tests d'Ostracodes au microscope electroniquea balayage: Remarques et mise au point d'une technique de preparation

Examination under the scanning electron microscope of paleozoic ostracode tests is limited by the conservationof the shells. When the fossilized specimens are stuck on the top of a delicate wire with a varnish, they are observable from various sides without changing the preparation.     

Decouverte d'un gisement de mammiferes du Miocene moyena Collet-Redon,pres Saint-Cannat (Bouches-du-Rhone,France): Liste faunique,implications stratigraphiques et paleogeographiques

The rich fauna from Collet-Redon (B.d.R.) has yielded together big and small mammals of an astaracian age, which enables us to reconsider the age of the containing geological formation. The little species show some affinities with those of the Swiss and South-German deposits and demonstrate the filter effect of the Rhodanian Miocene sea, which was permitting only the crossing of the big mammals.     

Les faunes des sites du Pléistocène supérieur du Caucase méridional : Grotte de Saka?hia, Grotte d’Ortvala et Grotte du Bronze (République de Géorgie)

The paleontological analysis of the fauna from three Late Pleistocene localities in Southern Caucasus (Saka?hia, Ortvala, and Bronze cave) confirmed the presence of Ursus spelaeus, Canis lupus, Equus ferus, Rhinocerotidae, Cervus elaphus, Capreolus capreolus, Alces alces, Bison priscus, Capra caucasica, Ovis ammon and Sus scrofa. The study also permitted the identification of new taxa for these localities. There may be the presence of reindeer (Rangifer tarandus) at Saka?hia, however it has not yet been confirmed. Moreover, remains of aurochs (Bos primigenius) were identified, in particular at Bronze cave where its abundance is exceptional. Indeed, Bos and Bison are generally very rare in Southern Caucasus. The analysis of the proportion of the different species in each locality revealed the two types of occupations of the caves, one dominated by hominids and the other by carnivores. At Saka?hia, where fauna is dominated by the presence of cave bear, the cave was seasonally occupied by Neanderthal groups. On the other hand, Bronze cave corresponds to a habitat of hunters, which occupied the site for longer periods.     

Le gisement redonien (pliocene) de la Moreliere,ile d'Oleron. Etude preliminaire de sa faune de Bivalves

The Redonian locality of la Morelière, the disappearence of which was reported, is accessible again. The Bivalvia corroborate the Pliocene age of this locality which was often put in the Miocene.     

Malacofaune et microfaune (foraminifères et ostracodes)d'un milieu estuarien tropical: Le delta de la basse vallée du Sénégal

Molluscs fauna and microfauna (Foraminifera and Ostracoda) from the delta and the lower valley of Senegal river are little various. These ones characterize an estuarian biotope where salinity is very contrasted according to the seasons and level of waters.     

Un exemple de sequence d'estrandans le Portlandien du Jura meridional

The study of the portlandian limestones of the Vouglans dam outcrop in the southern Jura mountains hasprovided the elements to establish the theoretical succession of the sediments (virtual sequence) and to show the similarities with the recent western Andros tidal flats. Their respective bathymetry is here compared, allowing to think that a part of the jurassian portlandian limestones are located from the shallow subtidal to the supratidal, creating short rhytmic sequences, sometimes only a few centimeters high.     

Modalités de la contamination d'une chaine trophique marine benthique par l'argent 110 m: 4. Influence du mode de contamination sur l'élimination du radionucléide

The elimination of ^110mAg by Navicula incerta Grunow ex Van Heurck, Navicula biskanteri Hustedt, Scrobicularia plana (da Costa) and Carcinus maenas (L.) depends upon the duration of contamination or the number of intakes of radioactive food. The longer the contamination occurred, the slower will be the climination.The decontamination is slower after (chronic) ingestion of radioactive food than after immersion in contaminated water. The physico-chemical forms of ^110mAg likely play a rôle in elimination kinetics. So, external organs, whose contamination results mainly from adsorption, get rid of ^110mAg faster than the digestive gland in which silver seems to be retained in a hardly exchangeable form.Consequently, the total radiation dose for contaminated organisms will depend greatly upon the way and the duration of the contamination.     

Du probleme de l'origine des Dinosauriens d'apres les donneesde l'ichnologie du Trias

With the data of the osteological paleontology and these of the ichnology, the authors attempt to restore the biotopes where lived the trackmakers, biotopes which have favoured in the Triassic the evolution and the expansion of the Archosaurs, the specialized Reptiles in the easy and rapid locomotion. They pointed out that the chirotheroid footprints cannot be attributed at all events to the Pseudosuchians and they come to the conclusion that Dinosaurs and Pseudosuchians, as separated groups, are appeared as early as the lower Triassic.     

Implications paléobiogéographiques de la découverted'une nouvelle localité éocène à vertébrés continentaux en afrique nord-occidentale: El Kohol (Sud-Oranais,Algérie)

The new fossil locality of El Kohol is located on the southern flank of the Saharan Altas, near Brezina (Algeria). It has been discovered in a thick Palaeogene continental series divided into 4 members: a transitional gypsiferous member, a lower red detritic member, a middle marly-calcareous member, and an upper red detritic member. The new flora and fauna have been obtained by excavation and washing-screening of a marly level of the middle member. The main finds are charophytes, lower vertebrates, a marsupial and eutherian mammals (lipotyphlan Insectivora, hyracoids, creodonts and Proboscidea). Geological and palaeontological data allow to refer these fossil remains, at least provisorily, to the end of the early Eocene. Palaeobiogeographical comments are made about forms with Holarctic affinities.