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L’originalité des dépôts sédimentaires et des faunes d’ammonites du jebel Bou Rharraf repose sur la présence de faciès « Ammonitico Rosso », les plus occidentaux connus pour le Pliensbachien, une forte diversité des Phylloceratida (Phylloceras, Calaiceras, Zetoceras, Partschiceras et Juraphyllites) et une disparité morphologique importante chez les Galaticeras, Miltoceras et les Tauromeniceras. Si...
L’analyse pollinique de sédiments de deux sondages situés au nord-est du Maroc (Nador 1) et au sud-est de l’Espagne (Andalucia G1) a permis d’obtenir des renseignements sur la végétation et le climat des plaines littorales d’Afrique du Nord, du massif du Rif, ainsi que de la région de la cordillère Bétique durant le Pliocène. La végétation sur le pourtour de la mer d’Alboran était généralement de...
This represents the first study of the soricid community from the Early Pliocene site of Langebaanweg (LBW) which is represented by four species, two of which belong to the soricid genus Myosorex (Forest shrew). Using geometric morphometrics the two Myosorex fossil species are compared with each other, and the extant western and eastern Cape species: Myosorex varius, M. cafer and M. longicaudatus...
Se da a conocer la malacofauna recuperada en la unidad sedimentaria holocena de la localidad fosilífera de Villa Valle María (Diamante, Entre Ríos, Argentina), datada en 2,490±45 años 14 C A.P. sobre Bulimulus sp., y que representa el primer registro ilustrado de moluscos cuaternarios en sedimentos loéssicos de Argentina. La localidad corresponde a un depósito acumulado por acción eólica,...
Une carotte longue de 122 cm, prélevée au niveau de la Sebkha El-Guettiate, dans la région de Skhira (Sud-Est tunisien), a été soumise à une étude micropaléontologique et sédimentologique. L’étude quantitative et qualitative des ostracodes et des foraminifères benthiques couplée à des approches analytiques (analyse factorielle des correspondances et indices de diversité et d’équitabilité) nous a permis...
Beaked whales (Ziphiidae) often show highly specialized features, involving bone morphology or structure, in the rostral region of their skulls. Previous studies revealed an extremely derived and peculiar histological structure in the rostrum of the extant Mesoplodon densirostris. In order to assess if this structure is a general feature of ziphiids, the swollen premaxillae of Aporotus recurvirostris,...
Megalonychidae are known from the Deseadan of Argentina and Bolivia to the present, represented by the tree sloth Choloepus Illiger. The principal fossil records of this clade are those from the Quaternary of Central America and the Antilles (e.g., Megalocnus Leidy, Acratocnus Anthony) and North America (e.g., Megalonyx Harlan, Pliometanastes Hirschfeld and Webb). From the Quaternary of South America,...
A single carbonate coquinoid lens from the Griesbachian (Early Triassic) of Shanggan, South China, yielded 11 bivalve species described in this study in addition to four gastropod and one ammonoid species reported elsewhere. This makes the Shanggan fauna one of the richest mollusc faunas from the early post-extinction interval after the end-Permian mass extinction event. Four of the present genera...
Se documenta el hallazgo de un mamífero marino en el Mioceno medio de la cuenca de El Camp de Tarragona (NE España). En concreto, se trata de un esqueleto incompleto y desarticulado de un individuo juvenil de cetáceo. Los restos aparecen depositados inmediatamente por encima de una superficie de transgresión e incluidos en un nivel de calcisiltitas glauconíticas que marcan el comienzo de una secuencia...
The late Tortonian – early Messinian shallow marine sands of Cessaniti area (Monte Poro, Vibo Valentia, Southern Italy) yield marine and continental vertebrates. The best represented taxon is the Sirenian Metaxytherium serresii, while the terrestrial mammal assemblage includes a boselafine bovid, an hexaprotodontid hippopotamus, the giraffids Samotherium cf. boissieri and Bohlinia cf. attica, a rhino...
The rodent faunas from the Comăneşti 1 and Tauţ localities (Western Romania) are revised in light of the latest taxonomical, biostratigraphical and palaeoenvironmental information. The main systematic results show that the two cricetid rodents Megacricetodon crisiensis and Democricetodon iazygum are invalid, whereas Democricetodon zarandicus is retained. The original assigment of the cricetodontini...
The Valdavara-1 cave, located in the westernmost part of the Iberian Peninsula, is an archaeological site that has been excavated since 2007. At least two main sedimentary units have been identified: an upper one, 30 cm-thick, that has yielded many fragments of ceramic characteristic of the Recent Prehistory (with a radiocarbon age of 4.490±40years BP), and a lower one, 90 cm-thick, separated from...
In the Early Miocene lacustrine strata of Limagne (Allier, France), three soricids were described long ago: Oligosorex antiquus, Oligosorex ambiguus and Crocidosorex piveteaui. The lack of precise descriptions of, and comparisons among, these fossils – the type specimens of both species of Oligosorex having disappeared – on the one hand, and the lack of accuracy in their biostratigraphic positions...
Among the Pleistocene localities of the Sierra de Atapuerca, the site called Sima del Elefante is famous for having delivered in its lower level (TE-LRU) some hominid remains currently considered the oldest in Western Europe (about 1.2 Ma). In its upper part (TE-URU), this site has fossiliferous levels pertaining to the late Middle Pleistocene (350-250 ka). Here we describe for the first time the...
Alilepus meini nov. sp., a new leporid known only from the Early Messinian of central-western Italy (Baccinello-Cinigiano basin, V3 faunal assemblage; Tuscany), is described here. A. meini nov. sp. is an endemic taxon – not inherited from the older Tusco-Sardinian assemblages – of the continental and balanced BCB V3 fauna. The peculiarities of A. meini nov. sp. mainly reside in the occlusal surface...
The dental material described in this paper represents the largest known sample of molar material of the extinct platacanthomyine rodent Neocometes Schaub and Zapfe. It can be attributed to Neocometes similis Fahlbusch, the stratigraphically oldest and most primitive of the two species recognized in the European Miocene. This rich material provides sufficient samples of all molar positions to evaluate...
We describe the bat fossils preserved in four sites from the middle and upper Pleistocene, three of them being well-known French localities: the rock shelter of Les Valerots, the caves of l’Escale at Saint Estève Janson and “du Prince” at Grimaldi (Italy), and the filling of Combe-Grenal, all of them containing microvertebrate assemblages with yet undescribed bat fossils. All species represented in...
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