Lesport j f (6 risultati)

We record 30 species of Tonnoidea from the Upper Oligocene of Aquitaine (Adour Basin). These comprise taxa in the families Cassidae (11 species), Tonnidae (1 species), Laubierinidae (1 species), Charoniidae (1 species), Bursidae (3 species), Cymatiidae (9 species), Personidae (1 species), and Ficidae (3 species). Three new species are proposed, one in Cassidae (Semicassis poustagnacensis n. sp.) and two in Cymatiidae (Linatella antecessor n. sp., Gyrineum cahuzaci n. sp.). Twelve species are directly related to known species from the Lower Miocene of Aquitaine and 7 species are also known from the Lower Oligocene. Twelve species are reported for the first time in these deposits. Five species could not be named or are identified as c.f. . We identified six species species, including a new Rupelian species (Cassis vancuycki n. sp.) in a review of the Oligocene and Miocene Cassis of Aquitaine. Neotype designation is made for Semicassis miodiadema Sacco, 1908. Lectotype designations are made for Cassis mamillaris Grateloup, 1827, Triton crassum Grateloup, 1845, Triton ventricosum Grateloup, 1833 and Ranella subrania d Orbigny, 1852. Two new combinations are also made. New taxa: Semicassis poustagnacensis n. sp., Linatella antecessor n. sp., Gyrineum cahuzaci n. sp. 100 pp., 14 figs, 1 tab., 28 b/w plates, br. 4 [in French].…

The Cenozoic Pleiotritoninae (Mollusca: Neogastropoda: Cancellarioidea: Cancellariidae) of the Aquitaine basin, southwestern France. The Cenozoic species belonging to the subfamily Plesiotritoninae Beu & Maxwell, 1987 (Cancellariidae ) currently known from the Aquitaine Basin, southwestern France, are studied. Geological and geographical settings of the sites involved are specified. Apart from Loxotaphrus thorei (Grateloup, 1845), seven new species are described here: Plesiotriton aucoini, early Oligocene (late Rupelian) of Espibos, Gaas (Landes); P. camiadeorum, early Oligocene (late Rupelian) of Lagouarde, Gaas (Landes); P. ganensis and P. teuleraensis, both early Eocene (middle-late Ypresian, Cuisian) of La Teulere, Gan (Pyr?n?es-Atlantiques); Tritonoharpa aquitaniensis, early Miocene (early Burdigalian), Vives quarry, Meilhan (Landes); T. mariechristinae, middle Miocene (Langhian) of G?lis quarry, Le Houga (Gers); T. renardi, middle Miocene (Serravallian) of Carr? or historically Carrey, Sallespisse (Pyr?n?es-Atlantiques). Triton speciosum Bellardi, 1873 is here placed in Tritonoharpa; for Triton praetextum Bellardi, 1873 no position could be adopted for lack of good material. The species introduced under the name Tritonidea (Cantharus) aturensis (Peyrot, 1927) is here considered to be an ecomorph of the very variable species Loxotaphrus thorei (Grateloup, 1845), besides L. thorei morph thorei, L. thorei morph estotiensis and L. thorei morph laevis. Loxotaphrus abnormis (Bayan, 1870) is considered to be different from L. thorei, but Loxotaphrus subtaurinensis (Vergneau, 1965) is considered to be a synonym of L. thorei. The new genus Beuella (Cancellariidae: Plesiotritoninae) is proposed for Tritonidea pisanelloides Cossmann in O?Gorman & Cossmann, 1923 of the Cuisian of Gan (Pyr?n?es-Atlantiques). Les Plesiotritoninae (Mollusca, Gastropoda, Cancellariidae) de l?Eoc?ne du bassin de Paris, du Cotentin, de Loire-Atlantique et d?Aquitaine. Les esp?ces de l?oc?ne du bassin de Paris, du Cotentin, de la Loire-Atlantique et d?Aquitaine appartenant ? la sous-famille des Plesiotritoninae sont ?tudi?es. 8 esp?ces sont d?crites comme nouvelles : Plesiotriton cailloelensis nov. sp., P. evanesco nov. sp., P. calciatus nov. sp. et Colubratriton garini nov. sp. du Lut?tien (?oc?ne moyen) du bassin de Paris; P. jacquesponsi nov. sp. et P. clandestinus nov. sp. du Bartonien (?oc?ne moyen) du bassin de Paris, Tritonoharpa caunbonensis nov. sp. du Bartonien (?oc?ne moyen) de la Loire-Atlantique et Colubratriton merlei nov. sp. du Cuisien (Ypr?sien, ?oc?ne inf?rieur) du bassin d?Aquitaine. Le mat?riel type de Plesiotriton volutellus (Lamarck, 1803), esp?ce type du genre Plesiotriton, est consid?r? comme perdu; un n?otype est d?sign? Tritonoharpa caunbonensis nov. sp. du Bartonien (?oc?ne moyen) de la Loire-Atlantique repr?sente la plus ancienne occurrence de ce genre et nous permet d?tendre sa long?vit? Le nouveau genre Colubratriton est propos? pour l?esp?ce Plesiotriton deshayesianus Beu & Maxwell, 1987; un lectotype est d?sign? pour cette esp?ce. Les esp?ces nouvelles Fusiaphera esus nov. sp. du Cuisien (Ypr?sien, ?oc?ne inf?rieur) du bassin de Paris et F. kassitiana nov. sp. du Maastrichtien (Cr?tac? sup?rieur) d?Iran sont introduites. Pisanella marieastridae n. nom. est propos? en remplacement de Voluta fusiformis Defrance, 1829 non Brocchi, 1814 nec Turton, 1819 nec Swainson, 1822. 64+56 pp., 14+6 figs, 7+6 tabs, 13+12 pls, br. 4. …

Le site de lariey (R?serve Naturelle G?ologique de Saucats-la-Br?de), o? se situe la coupe principale de l Aquitanien stratotypique, a livr? 314 esp?ces de gast?ropodes, dont 91% ont ?t? nomm?es. 13 esp?ces nouvelles sont d?crites. Ces esp?ces nouvelles appartiennent aux familles Litiopidae, Caecidae, Stenothyridae, Naticidae, Epitoniidae, Cornirostridae, Hyalogyrinidae (une esp?ce chacune), Cerithiopsidae (3 esp?ces) et Pyramidellidae (3 esp?ces). Compar? au dernier travail exhaustif sur les faunes du Mioc?ne inf?rieur (Cossmann & Peyrot), pr?s de 60% des esp?ces sont signal?es pour la premi?re fois dans ce site. The site of Lariey (Geological Nature Reserve of Saucats-La-Br?de), the main outcrop of the Aquitanian Stratotype, has yielded 314 species of gastropods, 91% of which have been named. 13 species are described as new. They are included in the families Litiopidae, Caecidae, Stenothyridae, Naticidae, Epitoniidae, Cornirostridae, Hyalogyrinidae (one species in each family), Cerithiopsidae (3 species) et Pyramidellidae (3 species). Compared to the last exhaustive revision of the molluscs of the Lower Miocene (Cossmann & Peyrot), about 60% of the species are recorded for the first time in the site. 190 pp., 19 figs, 37 pls, 1 tab. br. 4. …

64 S., 14 Abb., 7 Tab., 13 Taf., Palaeontos 27. Sprache: Deutsch Gewicht in Gramm: 1500.