Découverte de Poissons fossiles dans le Tortonien diatomitique du bassin de Hellín (Province d'Albacete, Espagne)

The finding of fossil fishes in the Tortonian diatomites of the Hellín basin (Province of Albacete, Spain), shows that this fish-fauna, characterized by the occurrence of the genus Spratelloides BLEEKER, exhibits great similarities with some fish-faunas from the diatomitic Messinian of the Westem Mediterranean

Sur la présence de "Percichthyidae" (Poissons Téléostéens) dans l'Eocène moyen du Bassin du Duero (Province de Zamora, Espagne)

La présence d'os isolés de Percoidei est signalée dans l'Eocène moyen du bassin du Duero. Bien que leur détermination précise soit difficile, il est possible de mentrer que des représentants de la famille des "Percichthyidae" vivaient à cette époque dans douces de la péninsule ibérique.Se señala la presencia de huesos aislados de Percoides en el Eoceno medio de la cuenca del Duero, y aunque su determinación precisa es bastante difícil, es posible demostrar que representantes de la familia "Percichthyidae" vivían en esta época en las aguas continentales de la península Ibérica

Contributions à la Paléontologie du Miocène moyen continental du Bassin du Tage. II - Observations sur les dents pharyngiennes de poissons cyprinidés - Póvoa de Santarém.

The study of Cyprinid fish pharyngeal teeth, collected by M. Telles Antunes in continental "Helvetian" sediments from Póvoa de Santarém, makes possible to demonstrate the occurrence of two distinct species. One remains undetermined. The other belongs to the recent genus Leuciscus CUV. Several dental types of this genus are described and figured as Leuciscus antunesi nov. sp. Palaeoclimatical and palaeoecological interpretations are proposed

Poissons du Paléogène inférieur de Silveirinha (Portugal)

Fragmentary skeletal remains of Percoid fishes (Teleostei, Percoidei) are described from the Upper Paleocene? or Lowermost Eocene(MN7) from Silveirinha. It is suggested that they belong to some primitive Percoids which are already known in the Iberian peninsula. They bear witness of an ancient westwards extension of the geographical distribution of Percoid fishes that are common in the lower levels of the Eocene in the Douro Basin in Spain

†Kenyaichthyidae fam. nov and †Kenyaichthys gen. nov - First Record of a Fossil Aplocheiloid Killifish (Teleostei, Cyprinodontiformes)

The extant Cyprinodontiformes (killifishes) with their two suborders Cyprinodontoidei and Aplocheiloidei represent a diverse and well-studied group of fishes. However, their fossil record is comparatively sparse and has so far yielded members of the Cyprinodontoidei only. Here we report on cyprinodontiform fossils from the upper Miocene Lukeino Formation in the Tugen Hills of the Central Rift Valley of Kenya, which represent the first fossil record of an aplocheiloid killifish. A total of 169 specimens - mostly extraordinarily well preserved and a sample of ten extant cyprinodontiform species were studied on the basis of morphometrics, meristics and osteology. A phylogenetic analysis using PAUP was also conducted for the fossils. Both the osteological data and the phylogenetic analysis provide strong evidence for the assignment of the fossils to the Aplocheiloidei, and justify the definition of the new family dagger Kenyaichthyidae, the new genus dagger Kenyaichthys and the new species dagger K. kipkechi sp. nov. The phylogenetic analysis unexpectedly places dagger Kenyaichthys gen. nov. in a sister relationship to the Rivulidae (a purely Neotropical group),a probable explanation might be lack of available synapomorphies for the Rivulidae, Nothobranchiidae and Aplocheilidae. The specimens of dagger K. kipkechi sp. nov. show several polymorphic characters and large overlap in meristic traits, which justifies their interpretation as a species flock in statu nascendi. Patterns of variation in neural and haemal spine dimensions in the caudal vertebrae of dagger Kenyaichthys gen. nov. and the extant species studied indicate that some previously suggested synapomorphies of the Cyprinodontoidei and Aplocheiloidei need to be revised

Los Ciprínidos (Pisces) del sistema lacustre Oligocénico-Miocénico de los Monegros (sector SE de la cuenca del Ebro, provincias de Lleida, Tarragona, Huesca y Zaragoza)

El material de dientes faringeos de Ciprinidos procedentes de las sucesiones lacustres del Oligoceno superior y Aquitaniense inferior del sector SE de la cuenca del Ebro es atribuido a Rutilus antiquus n.p. Esta nueva especie es morfologicamente proxima a R. pachecoi (ROYO) y ccLeuciscusa antunesi GAUDANT, reconocidas en el Mioceno de la Pennsula Ibrica, asi como a la especie actual R. alburnoides (STEINDACHNER). R. antiquus n.p. habito durante el Oligoceno superior y probablemente durante el Aquitaniense 1os lagos someros endorreicos de salinidad variable (Sistema lacustre de Los Monegros) del sector SE de la cuenca del Ebro

Characiform fishes (Teleosts, Ostariophysi): how many waves of immigration into Europe during the Cenozoic?

The occurrence of fossil characiforms in Europe was first observed more than forty years ago in the Lower Eocene of the Paris Basin. Since that time, they have been reported from the Maastrichtian of Romania and Southern France, then in the Oligocene of Provence, the Middle Miocene of Southwest France, the Upper Miocene of Portugal, and, more recently, in the basal Eocene of Belgium. Morphological comparison has shown that they belong to more or less strikingly different taxa. This supports the hypothesis that the fossil characiforms found in Europe reached this continent during several independent waves of immigration