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

History of Geology up to 1780

Ancient civilisations in contact with nature inquired about their origins and about particular geodynamic phenomena. In most cases they satisfied themselves with empiric explanations; they even used deities in order to understand inexplicable situations. Little by little humans learnt how to observe their environment and arrange processes. During the Renaissance the first geologic principIes were born and this knowledge spread rapidly. Natural phenomena were understood in terms of dynamic cause-effect, although many dogmatic and magic interpretations persisted. Many authors agree that geology, began to be structured as a science in the second half of the eighteenth century with Abraham Gottlob Werner (17491817), father of Neptunism (Figure 1). However, sorne geologic paradigms such as diluvialism existed before neptunism; all of them contained countless mistakes and ambiguities. This article outlines the period up until 1780, which thus incorporates the work of James Hutton (see Famous Geologists: Hutton). His ideas were important in the development of geology, more specifically relating to the origins and dating of rocks. Geology was not completely defined till the birth of Stratigraphy at the end of the eighteenth century and Palaeontology at around 1830

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

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

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 Península Ibérica, asi como a la especie actual R. alburnoides (STEINDACHNER). R. antiquus n.p. habito durante el Oligoceno superior y probablemente durante el Aquitaniense los lagos someros endorreicos de salinidad variable (Sistema lacustre de Los Monegros) del sector SE de la cuenca del Ebro

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

Vicariance and dispersal in southern hemisphere freshwater fish clades: a palaeontological perspective

Widespread fish clades that occur mainly or exclusively in fresh water represent a key target of biogeographical investigation due to limited potential for crossing marine barriers. Timescales for the origin and diversification of these groups are crucial tests of vicariant scenarios in which continental break‐ups shaped modern geographic distributions. Evolutionary chronologies are commonly estimated through node‐based palaeontological calibration of molecular phylogenies, but this approach ignores most of the temporal information encoded in the known fossil record of a given taxon. Here, we review the fossil record of freshwater fish clades with a distribution encompassing disjunct landmasses in the southern hemisphere. Palaeontologically derived temporal and geographic data were used to infer the plausible biogeographic processes that shaped the distribution of these clades. For seven extant clades with a relatively well‐known fossil record, we used the stratigraphic distribution of their fossils to estimate confidence intervals on their times of origin. To do this, we employed a Bayesian framework that considers non‐uniform preservation potential of freshwater fish fossils through time, as well as uncertainty in the absolute age of fossil horizons. We provide the following estimates for the origin times of these clades: Lepidosireniformes [125–95 million years ago (Ma)]; total‐group Osteoglossomorpha (207–167 Ma); Characiformes (120–95 Ma; a younger estimate of 97–75 Ma when controversial Cenomanian fossils are excluded); Galaxiidae (235–21 Ma); Cyprinodontiformes (80–67 Ma); Channidae (79–43 Ma); Percichthyidae (127–69 Ma). These dates are mostly congruent with published molecular timetree estimates, despite the use of semi‐independent data. Our reassessment of the biogeographic history of southern hemisphere freshwater fishes shows that long‐distance dispersals and regional extinctions can confound and erode pre‐existing vicariance‐driven patterns. It is probable that disjunct distributions in many extant groups result from complex biogeographic processes that took place during the Late Cretaceous and Cenozoic. Although long‐distance dispersals likely shaped the distributions of several freshwater fish clades, their exact mechanisms and their impact on broader macroevolutionary and ecological dynamics are still unclear and require further investigation.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/148368/1/brv12473_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/148368/2/brv12473.pd