Oletta – Castiglione

En 1998, le creusement d’un nouveau puits a permis l’accès aux niveaux profonds de la cavité Cast. 1 et la reprise des fouilles de cette cavité qui a également bénéficié d’un éclairage adapté. De nouveaux restes de deux, semble-t-il, Cervidés différents (le Cerf de Caziot et un Élaphiné (?)), du Cuonidé Cynotherium sardous, de la musaraigne Episoriculus corsicanus et de nombreux et très beaux restes de la chevêche Athene angelis ont, en particulier, ont été trouvés. Hélas, seules les parois t..

The SuperCam Instrument Suite on the Mars 2020 Rover: Science Objectives and Mast-Unit Description

On the NASA 2020 rover mission to Jezero crater, the remote determination of the texture, mineralogy and chemistry of rocks is essential to quickly and thoroughly characterize an area and to optimize the selection of samples for return to Earth. As part of the Perseverance payload, SuperCam is a suite of five techniques that provide critical and complementary observations via Laser-Induced Breakdown Spectroscopy (LIBS), Time-Resolved Raman and Luminescence (TRR/L), visible and near-infrared spectroscopy (VISIR), high-resolution color imaging (RMI), and acoustic recording (MIC). SuperCam operates at remote distances, primarily 2-7 m, while providing data at sub-mm to mm scales. We report on SuperCam's science objectives in the context of the Mars 2020 mission goals and ways the different techniques can address these questions. The instrument is made up of three separate subsystems: the Mast Unit is designed and built in France; the Body Unit is provided by the United States; the calibration target holder is contributed by Spain, and the targets themselves by the entire science team. This publication focuses on the design, development, and tests of the Mast Unit; companion papers describe the other units. The goal of this work is to provide an understanding of the technical choices made, the constraints that were imposed, and ultimately the validated performance of the flight model as it leaves Earth, and it will serve as the foundation for Mars operations and future processing of the data.In France was provided by the Centre National d'Etudes Spatiales (CNES). Human resources were provided in part by the Centre National de la Recherche Scientifique (CNRS) and universities. Funding was provided in the US by NASA's Mars Exploration Program. Some funding of data analyses at Los Alamos National Laboratory (LANL) was provided by laboratory-directed research and development funds

Un nouveau genre de « Ptychogasteridae » (Chléloniens, Testudinoidea) du gisement lutetien du Geiseltal, Allemagne

Parmi le matériel de tortues du gisement lutétien du Geiseltal (Allemagne), un nouveau taxon de Testudinoidea aquatique est décrit. Ce taxon appartient au groupe des « Ptychogasteridae », défini dans ce travail. Il s’agit d’un taxon primitif, permettant de polariser les caractères à l’intérieur de ce groupe. Une hypothèse de relations entre certaines formes européennes et nord-américaines est proposée au sein des « Ptychogasteridae ».Among the fossil turtles from of the Lutetian locality of Geiseltal (Germany), a new taxon of freshwater Testudinoidea is described. This taxon belongs to the ‘Ptychogasteridae’ group, which is diagnosed here. It is a primitive taxon, allowing the polarization of the characters of this group. A hypothesis of relationships between European and North American forms in the ‘Ptychogasteridae’ group is proposed.</p

Deux nouvelles tortues de l&#039;Éocène inférieur de Saint-Papoul (Aude, France)

Parmi le matériel de tortues du gisement de l\u27Éocène inférieur de Saint-Papoul (Aude, France, MP 9-10), deux nouveaux taxons de Testudinoidea aquatiques sont décrits. Le premier est une nouvelle espèce du genre Palaeoemys , genre auparavant connu au Lutétien d\u27Allemagne. Le second taxon est un nouveau genre, aussi décrit sur du matériel de Pépieux–Cesseras et d\u27Eygalayes.Among the fossil turtles from of the Lower Eocene of Saint-Papoul (Aude, France), two new taxa of freshwater Testudinoidea are described. The first is a new species of the genus Palaeoemys , known before in the Lutetian of Germany. The second taxon is a new genus, also described on material of Pépieux-Cesseras and Eygalayes.</p

Le groupe " Palaeochelys sensu lato Mauremys " dans le contexte systématique des Testudinoidea aquatiques du Tertiaire d'Europe occidentale (Apports à la biostratigraphie et à la paléobiogéographie)

Parmi les Testudinoidea (sensu Gaffney & Meylan, 1988 ; Chelonii, Cryptodira) aquatiques du Tertiaire d'Europe occidentale, le groupe " Palaeochelys sensu lato Mauremys " est défini ainsi que celui des " Ptychogasteridae ", ces groupes sont replacées dans leur contexte paléobiogéographique. Les taxons du complexe " Palaeochelys sensu lato Mauremys " auparavant rapportés à Ocadia, Palaeochelys, Clemmys, Emys...sont redéfinis, de nouveaux taxons sont décrits ainsi que de nouveaux taxons de " Ptychogasteridae ". Le cadre systématique et phylogénétique des Testudinoidae est étudié, les différentes phylogénies proposées (Hirayama, 1985 ; Gaffney & Meylan, 1988) sont critiquées, des hypothèses sont envisagées. Deux analyses de parcimonie sont effectuées avec 30 taxons terminaux du groupe " Palaeochelys sensu lato Mauremys " et deux extra-groupes (Platysternon megacephalum et Elkemys australis) ; 54 caractères anatomiques de la carapace sont décrits. Une hypothèse alternative de relations phylogénétiques (non informatisée) est proposée à l'issu des résultats obtenus pour ce groupe. Un catalogue actualisé des gisements tertiaires français à chéloniens est donné. La répartition biostratigraphique et paléobiogéographique des différents groupes de chéloniens continentaux est étudiée montrant l'intérêt paléoenvironnemental et paléoécologique de ceux-ci et leurs limites biostratigraphiques.Among freshwater Testudinoidea (sensu Gaffney & Meylan, 1988; Chelonii, Cryptodira) from the Tertiary of Western Europe, the "Palaeochelys sensu lato - Mauremys" group is defined, as is the "Ptychogasteridae " group, these groups are also re-considered in their paleobiogeographical context. Taxa from the "Palaeochelys sensu lato - Mauremys" complex, previously referred to Ocadia, Palaeochelys, Clemmys, Emys... are redefined, and new taxa are described as well as new taxa of "Ptychogasteridae". The systematics and phylogeny of the Testudinoidae are studied, various phylogenies (Hirayama, 1985; Gaffney & Meylan, 1988) are discussed, new hypotheses are suggested. Two analyses of parsimony are made with 30 terminal taxa for the "Palaeochelys sensu lato - Mauremys" group and two outgroups (Platysternon megacephalum and Elkemys australis); 54 anatomical characters are described. An alternative hypothesis of phylogenetic relationships (not computerized) is proposed. An updated catalogue of the French Tertiary localities bearing chelonians is provided. The biostratigraphic and paleobiogeographical distribution of the various continental chelonian groups is studied, showing the palaeoenvironnemental and paleoecological significance of chelonians and the limits of their biostratigraphic significance.PARIS-Museum Hist.Naturelle (751052304) / SudocSudocFranceF

Menatanthus mosbruggeri gen. nov. et sp. nov. – A flower with in situ pollen tetrads from the Paleocene maar lake of Menat (Puy-de-Dôme, France)

The Paleocene Fossil-Lagerstätte Menat in France is well known for its wealth of outstandingly well preserved fossil insects and plants. Despite being known for more than a century, the palaeoflora, which is regarded as typical for the late Thanetian by some authors, has largely been neglected since the 1940s. New excavations and surveys yielded exceptionally well-preserved plant material, including a minute, heptamerous flower bearing in situ pollen tetrads, comparable to tetrads of the modern ericacean genus Kalmia L, in its anthers. The only known modern ericacean genus which is characterised by heptamerous flowers is Bejaria Mutis ex L., a basal relative of the tribe Phyllodoceae within Ericaceae, which also includes the genus Kalmia in a relatively basal position. However, heptamerous flowers also occur very rarely (mostly interpreted as teratologies) in a number of other modern Ericaceae, but also in various other modern angiosperm families. Due to the unique combination of a heptamerous flower with Kalmia-type pollen tetrads within the anthers, the new taxon Menatanthus mosbruggeri gen. nov. et sp. nov. is erected. The lack of morphological data from the flower itself and the fact that comparable pollen tetrads can be produced by a number of modern families, however, prevent an assignment of the new taxon to any known angiosperm family.Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659Alexander von Humboldt-Stiftung http://dx.doi.org/10.13039/10000515

Latest Oligocene (MP30) and Earliest Miocene (MNl) vertebrates from the Toulouse subway (SW France)

International audienceLatest Oligocene (MP30) and Earliest Miocene (MN1) vertebrates from the Toulouse subway (SW France). The excavation for the line B of the Toulouse subway led in 2002-2003 to the discovery of various vertebrates, including the rhinocerotids Diaceratherium lemanense, Mesaceratherium paulhiacense, and Protaceratherium cf. minutum, an unidentified schizotheriine chalicotheriid, the artioclactyl Cainotherium sp., the theridormyid rodent Issiodoromys bransatensis, the testudinid tortoise 'Ergilemys' bruneti, and the small alligatoroid Diplocynodon sp. These first in situ diversified faunas of Toulouse confirm the Latest Oligocene (MP30) to Earliest Miocene age (MN1) of the micaceous sands interbedded with marl banks of the Toulouse underground. The fauna indicates the occurrence of various environments, ranging from forests to open habitats, nearby steady rivers for the concerned period and area

Reconstitution Paléoenvironnementale du point fossilifère Cast.3CG, Oletta, Haute-Corse (Pléistocène moyen), à partir d'une approche pluridisciplinaire

International audienc