23 results on '"Sergio Bogan"'
Search Results
2. Fossil fishes and anurans from the Miocene of Rio Chico and Cerro Zeballos, Chubut Province, Argentina
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FEDERICO L. AGNOLÍN, SERGIO BOGAN, and LAUREANO R. GONZALEZ RUIZ
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Percichthyidae ,Calyptocephalellidae ,Miocene ,Collón Curá Formation ,Patagonia ,Argentina ,Science - Abstract
Abstract The fossil record of freshwater fishes and anurans from the Miocene in Patagonia is relatively patchy, a large number of specimens remaining undescribed. The aim of the present contribution is to describe a fossil association of percomorphacean fishes and calyptocephalellid anurans from the early to late Miocene Collón Curá Formation, at Chubut province, Patagonia, Argentina. In spite of being represented by several specimens, both anurans and fishes show a very low taxonomic diversity. This pattern matches with other fossil sites from the Cenozoic of Patagonia, as well as with the extant Patagonian batrachofaunas and ichthyofaunas. The fossil record of frogs and fishes in Patagonia is represented by few lineages that have a large evolutionary history in the area, and occasionally can be traced up to the Late Mesozoic. more...
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- 2021
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3. An integrated approach clarifies the cryptic diversity in Hypostomus Lacépède 1803 from the Lower La Plata Basin
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YAMILA P. CARDOSO, FLORENCIA BRANCOLINI, LUCILA PROTOGINO, ARIEL PARACAMPO, SERGIO BOGAN, PAULA POSADAS, and JUAN I. MONTOYA-BURGOS
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Argentina ,Brazil ,freshwater fishes ,molecular phylogenetics ,Paraná Basin ,Science - Abstract
Abstract Abstract: Hypostomus commersoni Valenciennes 1836, Hypostomus cordovae (Günther 1880) and Hypostomus laplatae (Eigenmann 1907) have been little studied since their original descriptions. This study shows a comprehensive review of these species from the Lower La Plata Basin, including their taxonomic history, distribution, color patterns, morphology, and ecological and molecular phylogenetic data. Morphological and phylogenetic analyses based on D-loop sequences suggested that H. commersoni can be separated into two subclades, or subgroups. Based on these results and on the non-overlapping distribution range of the two subclades, we conclude that they represent two distinct species, thereby revalidating H. spiniger. The results also suggest that H. paranensis should be considered as species inquirenda and H. cordovae as valid species. This integrated approach provides key information for assessing the conservation status and biogeographic aspects of the genus Hypostomus in the Lower La Plata Basin. more...
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- 2019
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4. Stranded humpback whale (Megaptera novaeangliae) (Cetacea: Balaenopteridae) in Paraná River Delta, Buenos Aires Province, Argentina. Comments on the occurrence of marine mammals in the La Plata River Basin
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Sergio O. Lucero, María Constanza Gariboldi, Valeria Bauni, Juan Manuel Meluso, Daniela del Castillo, Federico L. Agnolin, and Sergio Bogan
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Megaptera novaeangliae ,Humpback whale ,Delta del Río Paraná ,Haplotypes ,Argentina ,Zoology ,QL1-991 - Abstract
Abstract The humpback whale (Megaptera novaeangliae) is distributed among most oceans and seas of the globe (except Mediterranean Sea). These whales migrate from feeding regions in the Antarctic waters to breeding areas in tropical and subtropical seas. Here we report the stranding of a female young humpback whale, which was founded dead in the vicinity of the Talavera Island, in the Paraná River Delta, Buenos Aires Province, Argentina. From the analysis of mitochondrial cytochrome c oxidase subunit I gene sequences, two novel haplotypes were found, totalizing four haplotypes described for the species. In the La Plata River Basin this species was found only twice at the end of the XIX century. Thus, the new finding constitutes an important addition to the list of cetaceans that occurs in Uruguay, Paraná and La Plata Rivers. more...
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- 2018
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5. Registro de Moridae (Teleostei: Gadiformes) en la Formación Chenque (Oligoceno Tardío-Mioceno Temprano) de la provincia de Chubut, Argentina Record of Moridae (Teleostei: Gadiformes) from the Chenque Formation (Late Oligocene - Early Miocene) from the Chubut province, Argentina
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Sergio Bogan and Federico L Agnolin
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Gadiformes ,Moridae ,Formación Chenque ,Chubut ,Argentina ,Patagonia ,Chenque Formation ,Science ,Science (General) ,Q1-390 - Abstract
En el presente trabajo se describen restos de un especimen relativamente completo perteneciente a la familia Moridae. Dicho ejemplar ha sido colectado en sedimentos referibles a la Formación Chenque (Oligoceno-Mioceno) de la provincia de Chubut, Argentina. Este material constituye el primer registro fósil concreto de un Gadiformes para Argentina y los primeros materiales óseos fósiles registrados para Moridae. La morfología de los ejemplares sugiere afinidades con los géneros Physiculus y Salilota. La presencia de Moridae en el Mioceno Temprano de Patagonia y Nueva Zelanda se encuentra de acuerdo con hipótesis previas que indican conexiones marítimas transantárticas entre ambas regiones geográficas durante el Oligoceno Tardío - Mioceno Temprano.A nearly complete specimen belonging to the family Moridae is described in this paper. The material has been collected in outcrops referable to the Chenque Formation (Oligocene-Miocene) from the Chubut province, Argentina. The specimen constitutes the first fossil record for the Gadiformes in Argentina and one of the first osteological occurrences for Moridae. The morphology of the specimen suggests affinities with the genera Physiculus and Salilota. The presence of Moridae in the Early Miocene of Patagonia and New Zealand is in agreement with previous hypotheses suggesting marine transantarctic connections between both landmasses during Late Oligocene - Early Miocene times. more...
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- 2011
6. Primer registro fósil de la familia Trichomycteridae (Teleostei: Siluriformes; Plioceno) en la Formación Monte Hermoso, Argentina First fossil record for the family Trichomycteridae (Teleostei: Siluriformes; Pliocene) in the Monte Hermoso Formation, Argentina
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Sergio Bogan and Federico L. Agnolin
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Siluriformes ,Trichomycteridae ,Plioceno ,Formación Monte Hermoso ,Buenos Aires ,Argentina ,Pliocene ,Monte Hermoso Formation ,Science ,Science (General) ,Q1-390 - Abstract
En la presente nota se describen materiales asignables a la familia de Siluriformes Trichomycteridae, los cuales exhiben una serie de caracteres osteológicos que permiten referirlos a la subfamilia Trichomycterinae. Estos elementos consisten en un opercular e interopercular pertenecientes a un mismo individuo, procedentes del Plioceno Inferior-Medio de la Formación Monte Hermoso en la localidad de Farola de Monte Hermoso, provincia de Buenos Aires, Argentina. Este registro constituye el primer fósil reportado para la familia y unos de los pocos restos paleoictiológicos citados para la Formación Monte Hermoso.Some fossil remains referable to the siluriform family Trichomycteridae are described in this paper. These specimens exhibit a combination of characters that allow to include them within the subfamily Trichomycterinae. These elements consist on an opercular and interopercular of the same individual, collected in Lower-Middle Pliocene beds of the Monte Hermoso Formation, at the Farola de Monte Hermoso locality, Buenos Aires province, Argentina. This record constitutes the first fossil remains reported for the family, and one of the few paleoichthyological records for the Monte Hermoso Formation. more...
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- 2009
7. Primeros registros fósiles de pejerreyes (Teleostei: Atheriniformes) en el Pleistoceno Medio de la provincia de Buenos Aires, Argentina First fossil records of silversides (Teleostei: Atheriniformes) from the Middle Pleistocene of Buenos Aires province, Argentina
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Sergio Bogan, Martín L. de los Reyes, and Marcos M. Cenizo
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Pejerreyes ,Atherinomorpha ,Sorgentinini ,Odontesthes ,Pleistoceno ,Centinela del Mar ,Argentina ,Silversides ,Pleistocene ,Science ,Science (General) ,Q1-390 - Abstract
En este trabajo se dan a conocer restos fósiles de pejerreyes recuperados en secuencias sedimentarias correspondientes al Piso-Edad Bonaerense (Pleistoceno Medio) de la localidad de Centinela del Mar, provincia de Buenos Aires, Argentina. Los únicos registros fósiles previos de pejerreyes sudamericanos se restringen a tres localidades de edad Miocena de Argentina y Chile. La presencia de diversos caracteres osteológicos diagnósticos permitió referir al género Odontesthes algunas de las estructuras óseas aquí tratadas. Estos registros brindan nuevos datos acerca de la composición de las ictiofaunas pleistocénicas de Argentina, constituyendo los primeros restos fósiles de pejerreyes procedentes de la región pampeana.This paper presents the fossil remains of silversides recovered in sedimentary sequences corresponding to Centinela del Mar district Bonaerian Stage-Age (Middle Pleistocene), Buenos Aires province, Argentina. The few only previously described fossil silversides are restricted to three Chilean and Argentinean Miocene localities. The silversides studied here present several diagnostic osteological characters that allow us to refer the remains to the genus Odontesthes. These records give us new data on the composition of the pleistocenic ictiofaunas of Argentina, besides representing the first fossil records of silversides from the Pampean region. more...
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- 2009
8. IMPLICACIONES PALEOAMBIENTALES DE LA PRESENCIA DEL GÉNERO CERATOPHRYS (ANURA, CERATOPHRYINAE) EN CONTEXTOS ARQUEOLÓGICOS DE LA TRANSICIÓN PAMPEANO-PATAGÓNICA EN EL HOLOCENO TARDÍO (CURSO INFERIOR DEL RÍO COLORADO, ARGENTINA) PALEOEVIRONMENTAL IMPLICATIONS OF THE CERATOPHRYS GENUS (ANURA, CERATOPHRYINAE) FROM ARCHAEOLOGICAL CONTEXTS OF THE PAMPEAN-PATAGONIAN TRANSITION DURING THE LATE HOLOCENE (LOWER BASIN OF THE COLORADO RIVER, ARGENTINA)
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LUCIANA STOESSEL, SERGIO BOGAN, GUSTAVO MARTÍNEZ, and FEDERICO L AGNOLIN
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Argentina ,curso inferior del río Colorado ,transición Pampeano-Patagónica ,Ceratophrys ,Holoceno Tardío ,Argentine ,lower valley of Colorado River ,Pampean-Patagonian transition ,Late Holocene ,History of scholarship and learning. The humanities ,AZ20-999 ,Anthropology ,GN1-890 ,Social sciences (General) ,H1-99 - Abstract
En el presente trabajo se reporta la presencia del género Ceratophrys en la localidad arqueológica San Antonio y en el sitio Paso Alsina 1, ubicados en el curso inferior del río Colorado (provincia de Buenos Aires, Argentina). Los materiales comunicados aquí son asignados al Holoceno Tardío final y representan el registro más meridional conocido para el género, encontrándose en un área de transición Pampeano-Patagónica, a más de 400 kilómetros hacia el sur de su distribución actual. Se mencionan y discuten todas las localidades holocénicas portadoras de elementos óseos referibles a Ceratophrys. La variación corológica de esta especie aquí informada es coincidente con hipótesis paleoambientales que proponen mayores índices de temperatura y posiblemente una mayor disponibilidad hídrica para el Holoceno tardío.In this work, we report the presence of the Ceratophrys genus at the archaeological locality of San Antonio and at the Paso Alsina 1 archaeological site, situated at the lower basin of the Colorado river (Buenos Aires province, Argentina). The materials communicated here are assigned to the late Holocene and represent the southernmost evidence known for the genus at the Pampean-Patagonian transition, recorded more than 400 kilometers south of their present-day distribution. Additionally, we mention and discuss all the holocene localities where osseous elements referable to Ceratophrys were found. The corological variation proposed here for the genus Ceratophrys is coincident with paleoenvi-ronmental hypotheses that propose higher temperature and a possible elevated hydric availability rates for the late Holocene. more...
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- 2008
9. Arrhinolemur scalabrinii Ameghino, 1898, of the late Miocene : a taxonomic journey from the Mammalia to the Anostomidae (Ostariophysi: Characiformes)
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Sergio Bogan, Brian Sidlauskas, Richard P Vari, and Federico Agnolin
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Argentina ,fossil ,Leporinus ,Osteology ,Phylogeny ,Zoology ,QL1-991 - Abstract
The fossil species Arrhinolemur scalabrinii, which was described from late Miocene deposits of Entre Ríos, Argentina, is reevaluated. Whereas the species was originally placed in the Primates (Mammalia) and later made the unique member of the order Arrhinolemuroidea within the Mammalia, our analysis indicates that the specimen is rather a fish of the genus Leporinus, family Anostomidae (Characiformes). The species is redescribed, and the characters that support its new generic assignment are discussed. more...
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10. An integrative approach method reveals the presence of a previously unreported species of Imparfinis Eigenmann and Norris 1900 (Siluriformes: Heptapteridae) in Argentina
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Gastón Aguilera, Guillermo E. Terán, Juan Marcos Mirande, Felipe Alonso, Guido Miranda Chumacero, Yamila Cardoso, Sergio Bogan, and Dario R. Faustino‐Fuster
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Rivers ,Peru ,Argentina ,Animals ,Aquatic Science ,Ecology, Evolution, Behavior and Systematics ,Catfishes ,Phylogeny - Abstract
Specimens of Imparfinis were recently collected in north-western Argentina from the Bermejo River basin (Salta and Jujuy Provinces), del Valle River (Salta Province) and Horcones River (Santiago del Estero Province). An integrative approach to taxonomy, combining a detailed morphological study and molecular phylogenetic analyses, was applied to determine the species identity of these specimens. A principal components analysis of morphological data clustered the specimens from north-western Argentina and from the Amazon basin, indicating a close morphological resemblance. Also, a molecular phylogenetic analysis showed populations of I. guttatus from Argentina and Peru forming a clade. According to the conducted haplotype network analysis these populations are distinct in two mutations. Thus, in the absence of morphological or molecular data indicating the contrary, the combined method supports the identity of the specimens from the tributaries of the Paraguay River in Argentina as I. guttatus, whose type locality is in the upper Beni River basin in Bolivia. This contribution is also the first record for this species from Argentina. The disjunct distribution of I. guttatus provides new evidence reinforcing the hypothesis for the origin of the Paraguayan ichthyofauna. We also provide an approach to the phylogenetic relationships of Imparfinis in Heptapteridae. more...
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- 2022
11. First fossil of the Giant Armored Catfish Acanthicus (Siluriformes, Loricariidae) from the Late Miocene of Entre Ríos Province, Argentina
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Federico L. Agnolin and Sergio Bogan
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0106 biological sciences ,Loricariidae ,Argentina ,010607 zoology ,Late Miocene ,Structural basin ,Neogene ,010603 evolutionary biology ,01 natural sciences ,Genus ,Animals ,Animalia ,Chordata ,Catfishes ,Phylogeny ,Ecology, Evolution, Behavior and Systematics ,Taxonomy ,biology ,Actinopterygii ,Fossils ,Amazon rainforest ,Acanthicus ,Ecology ,Biodiversity ,biology.organism_classification ,Brachyplatystoma ,Animal Science and Zoology ,Siluriformes - Abstract
Loricariidae is a very diverse lineage of Neotropical fishes, being the most speciose family of the order Siluriformes. However, the loricariid fossil record is still very sparse. The aim of the present contribution is to describe in detail several bones belonging to the loricariid genus Acanthicus coming from late Miocene beds located at the Paraná River cliffs, Entre Ríos province, Argentina. Fishes of the Acanthicus clade are currently restricted to the northern half of South America, being mainly distributed in the Orinoco and Amazonas basins, with a single genus reaching the Paraná-Plata basin. Acanthicus adds to the list of several taxa that are shared by the Miocene of Paraná, Amazonas and Orinoco basins, but that nowadays are absent in the former (e.g., Colossoma, Phractocephalus, and Brachyplatystoma), and are typical of large river channels. This report of Acanthicus supports a close affinity between freshwater faunas of the Paraná, Orinoco, and Amazonas basins. Miocene fossils of freshwater fishes recorded in Paraná beds shed light on the connections between ancient basins of South America and also indicate that several fish clades suffered regional extinctions during the late Neogene or the beginning of the Quaternary. more...
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- 2020
12. New genus and species of Anablepidae (Teleostei, Cyprinodontiformes) from the Late Miocene of Argentina
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Victor Hugo Contreras, Rodrigo Leandro Tomassini, Sergio Bogan, Federico L. Agnolin, and Silvio Heriberto Peralta
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0106 biological sciences ,Anablepidae ,PHYLOGENY ,ANABLEPID ,Zoology ,Late Miocene ,010603 evolutionary biology ,01 natural sciences ,Paleontología ,Ciencias de la Tierra y relacionadas con el Medio Ambiente ,Monophyly ,Genus ,Cyprinodontiformes ,Clade ,Earth-Surface Processes ,SANJUANABLEPS CALINGASTA ,ARGENTINA ,Teleostei ,biology ,010604 marine biology & hydrobiology ,Geology ,biology.organism_classification ,Sister group ,CIENCIAS NATURALES Y EXACTAS ,MIOCENE - Abstract
A new anablepid (Cyprinodontiformes) from the Late Miocene of Puchuzum locality, San Juan Province, Argentina is described here. The collected specimens include male and female individuals showing marked sexual dimorphism and represented different ontogenetic stages. The fossils show a unique combination of characters reveals a new genus and species, Sanjuanableps calingasta. The phylogenetic analysis allowed to identify a monophyletic clade including Anableps, Tucmanableps and Sanjuanableps, which constitutes the sister group of other anablepids. During the Late Miocene, Sanjuanableps possibly formed monospecific shoals in shallow ponds of salty water in semiarid environments. Fil: Bogan, Sergio. Universidad Maimónides. Departamento de Ciencias naturales y Antropología. Fundación de Historia Natural "Félix de Azara"; Argentina Fil: Contreras, Victor Hugo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina Fil: Agnolin, Federico. Fundación de Historia Natural Félix de Azara; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Tomassini, Rodrigo Leandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina Fil: Peralta, Silvio Heriberto. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina more...
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- 2018
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13. Distribution extension of Hypostomus uruguayensis (Siluriformes: Loricariidae) in Argentina and first record for Bolivia. Molecular, morphology and biogeography data
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Sergio Bogan, Silvia Yasmin Lustosa-Costa, Luiz Jardim De Queiroz, Ariel Hernán Paracampo, Yamila Paula Cardoso, Juan I. Montoya-Burgos, and Tomás Maiztegui
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Bolivia ,biology ,Distribution (number theory) ,Biogeography ,Loricariidae ,Argentina ,Zoology ,Morphology (biology) ,Biodiversity ,biology.organism_classification ,Rivers ,Animals ,Animal Science and Zoology ,Hypostomus ,Catfishes ,Ecology, Evolution, Behavior and Systematics ,Taxonomy - Abstract
Lustosa-Costa, Silvia Yasmin, Bogan, Sergio, Queiroz, Luiz Jardim De, Montoya- Burgos, Juan I., Paracampo, Ariel, Maiztegui, Tomas, Cardoso, Yamila P. (2021): Distribution extension of Hypostomus uruguayensis (Siluriformes: Loricariidae) in Argentina and first record for Bolivia. Molecular, morphology and biogeography data. Zootaxa 4996 (1): 194-198, DOI: https://doi.org/10.11646/zootaxa.4996.1.12 more...
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- 2021
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14. A new species of the genus Echinorhinus (Chondrichthyes, Echinorhiniformes) from the upper cretaceous of southern South America (Argentina-Chile)
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Federico L. Agnolin, Fernando E. Novas, Rodrigo A. Otero, Federico Brissón Egli, Sergio Bogan, Mario E. Suárez, and Sergio Soto-Acuña
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ARGENTINA ,010506 paleontology ,biology ,Echinorhinus ,CRETACEOUS ,Paleontology ,ECHINORHINUS ,010502 geochemistry & geophysics ,biology.organism_classification ,01 natural sciences ,Chondrichthyes ,Pacific ocean ,Cretaceous ,Ciencias de la Tierra y relacionadas con el Medio Ambiente ,Taxon ,Oceanography ,CHILE ,Genus ,Echinorhiniformes ,Mesozoic ,Meteorología y Ciencias Atmosféricas ,CIENCIAS NATURALES Y EXACTAS ,Geology ,0105 earth and related environmental sciences - Abstract
We describe isolated shark teeth collected from levels of the Calafate Formation at the SE coast of the Argentino Lake, Calafate city, Santa Cruz province, Argentina (Atlantic Ocean), and from the Algarrobo coast at the Valparaíso Region in central Chile (Pacific Ocean). The teeth belong to a new species of the echinorhiniform genus Echinorhinus. Echinorhinus maremagnum n. sp. was a taxon distributed in both the southwestern Atlantic and the southeastern Pacific. This new taxon constitutes the oldest record of echinorhiniforms from South America and one of the few Mesozoic records at a worldwide scale. Fil: Bogan, Sergio. Fundación de Historia Natural Félix de Azara; Argentina. Universidad Maimónides; Argentina Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Fundación de Historia Natural Félix de Azara; Argentina. Universidad Maimónides; Argentina Fil: Otero, Rodrigo A.. Universidad de Chile; Chile Fil: Brissón Egli, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Suárez, Mario E.. Universidad de Chile; Chile Fil: Soto Acuña, Sergio. Universidad de Chile; Chile Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina more...
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- 2017
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15. First marine ichthyofauna from the late Eocene of Santa Cruz province, patagonia, Argentina
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Silvio Casadío, Federico L. Agnolin, and Sergio Bogan
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010506 paleontology ,Fossil Record ,biology ,Ecology ,Argentina ,Geology ,010502 geochemistry & geophysics ,biology.organism_classification ,Striatolamia ,Eocene ,01 natural sciences ,Carcharias ,Macrorhizodus Praecursor ,Striatolamia Macrota ,Abundance (ecology) ,Pristiophoridae ,Temperate climate ,Patagonia ,Assemblage (archaeology) ,Ciencias Exactas y Naturales ,0105 earth and related environmental sciences ,Earth-Surface Processes - Abstract
Fil: Agnolin, Federico. Laboratorio de Anatomía Comparada y Evolución de los Vertebrados, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”. Centro de Ciencias Naturales, Ambientales y Antropológicas, Fundación de Historia Natural Félix de Azara - Universidad Maimónides. CONICET. Argentina. Fil: Bogan, Sergio. Centro de Ciencias Naturales, Ambientales y Antropológicas, Fundación de Historia Natural Félix de Azara - Universidad Maimónides. Buenos Aires, Argentina. Fil: Casadio, Silvio. CONICET. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina. The fossil record of chondrichthyans in Argentina is still poorly known. The aim of the present contribution is to describe teeth representing a chondrichthyan assemblage from Man Aike Formation (late Eocene) exposed in the Lago Argentino area, at Santa Cruz province, Argentina. This report includes Striatolamia macrota, Macrorhizodus praecursor, Carcharias sp., a possible member of the family Pristiophoridae, for the Argentine territory. Previous Eocene reports of Striatolamia macrota from Argentina are based on incorrect determination of specimens. The shark association, especially the abundance of lamniforms, may be indicative of litoral and shallow (less than 30 m depth) temperate to cold waters, as suggested by micropaleontological content. more...
- Published
- 2020
16. Review of the enigmatic 'shark', Platyacrodus unicus Ameghino, 1935, from the Paleocene of Patagonia, Argentina: a history of palaeontologists, sharks and crabs
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Sergio Bogan, Martín D. Ezcurra, and Federico L. Agnolin
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biology ,Brachyura ,Fossils ,Holotype ,Argentina ,Zoology ,biology.organism_classification ,Crustacean ,Genus ,Heterodontidae ,Sharks ,Animals ,Animal Science and Zoology ,Carapace ,Clade ,Cenozoic ,Ecology, Evolution, Behavior and Systematics - Abstract
Platyacrodus unicus Ameghino, 1935, was described as an enigmatic shark probably related to the clade Heterodontidae. This species was described based on a single, small crushing tooth-like element coming from the “Salamancan” (Danian) of the Western Río Chico locality, Chubut province, Patagonia, Argentina. The holotype and only known specimen was never figured and only briefly characterized by its original describer Florentino Ameghino. The finding of the original figures and holotype specimen allows for a re-evaluation of the taxonomic status of this species. Here, Platyacrodus unicus is reinterpreted as the carapace of a small retroplumid crab of the genus Costacopluma Collins & Morris, 1975. more...
- Published
- 2019
17. A Pleistocene freshwater ichthyofaunal assemblage from central Argentina: What kind of fishes lived in the Pampean lagoons before the extinction of the megafauna?
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Daniel A. Tassara, Federico L. Agnolin, Marcos Cenizo, Adrián Giacchino, and Sergio Bogan
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Atmospheric Science ,Marine and Aquatic Sciences ,Fresh Water ,Cyprinodontiformes ,Pleistocene Epoch ,Megafauna ,Geological Facies ,History, Ancient ,Marine Fossils ,Climatology ,Quaternary Period ,Multidisciplinary ,biology ,Fossils ,Ecology ,Fishes ,Eukaryota ,Geology ,Oligosarcus ,Freshwater Fish ,Geography ,Vertebrates ,Medicine ,Lithofacies ,Odontesthes ,Research Article ,Freshwater Environments ,Pleistocene ,Science ,Argentina ,Ecoregion ,Corydoras ,Animals ,Paleoclimatology ,Paleozoology ,Ecology and Environmental Sciences ,Organisms ,Biology and Life Sciences ,Paleontology ,Aquatic Environments ,Geologic Time ,biology.organism_classification ,Fish ,Mollusca ,Pimelodella ,Earth Sciences ,Cenozoic Era ,Paleobiology - Abstract
This study contributes to the knowledge of continental fishes recovered from sedimentary successions corresponding to the Bonaerean Stage/Age (late mid-Pleistocene) in the locality of Centinela del Mar, General Alvarado County, Buenos Aires province, Argentina. At this site we describe fossil fishes from a palaeolagoon, including Corydoras sp., Pimelodella sp., Rhamdia sp., Oligosarcus sp., small undetermined characids, Jenynsia sp. and Odontesthes sp. The recovered ichthyofaunal assemblage comprises at least seven taxa of Paranaean lineage. The taxonomic composition of the palaeoichthyofauna is quite comparable to that presently found in Bonaerean Watercourses of the Atlantic Drainage ecoregion. This suggests that local ichthyofaunal communities have remained relatively stable since the late mid-Pleistocene. more...
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- 2020
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18. An integrated approach clarifies the cryptic diversity in Hypostomus Lacépède 1803 from the Lower La Plata Basin
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Juan I. Montoya-Burgos, Paula Posadas, Ariel Hernán Paracampo, Yamila Paula Cardoso, Lucila Cristina Protogino, Florencia Brancolini, and Sergio Bogan
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0106 biological sciences ,0301 basic medicine ,Range (biology) ,Argentina ,Morphology (biology) ,010603 evolutionary biology ,01 natural sciences ,Ciencias Biológicas ,purl.org/becyt/ford/1 [https] ,molecular phylogenetics ,03 medical and health sciences ,Species Specificity ,Paraná Basin ,Animals ,lcsh:Science ,purl.org/becyt/ford/1.6 [https] ,Hypostomus ,Catfishes ,Phylogeny ,Multidisciplinary ,Geography ,Phylogenetic tree ,biology ,Zoología, Ornitología, Entomología, Etología ,Biodiversity ,biology.organism_classification ,PARANA BASIN ,freshwater fishes ,Spiniger ,030104 developmental biology ,Evolutionary biology ,Molecular phylogenetics ,Conservation status ,lcsh:Q ,Species inquirenda ,CIENCIAS NATURALES Y EXACTAS ,Brazil - Abstract
Hypostomus commersoni Valenciennes 1836, Hypostomus cordovae (Günther 1880) and Hypostomus laplatae (Eigenmann 1907) have been little studied since their original descriptions. This study shows a comprehensive review of these species from the Lower La Plata Basin, including their taxonomic history, distribution, color patterns, morphology, and ecological and molecular phylogenetic data. Morphological and phylogenetic analyses based on D-loop sequences suggested that H. commersoni can be separated into two subclades, or subgroups. Based on these results and on the non-overlapping distribution range of the two subclades, we conclude that they represent two distinct species, thereby revalidating H. spiniger. The results also suggest that H. paranensis should be considered as species inquirenda and H. cordovae as valid species. This integrated approach provides key information for assessing the conservation status and biogeographic aspects of the genus Hypostomus in the Lower La Plata Basin. Fil: Cardoso, Yamila Paula. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Sistemática y Biología Evolutiva; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Brancolini, Florencia. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigación e Ingeniería Ambiental; Argentina Fil: Protogino, Lucila Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; Argentina Fil: Paracampo, Ariel Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; Argentina Fil: Bogan, Sergio. Universidad Maimónides; Argentina. Fundación de Historia Natural Félix de Azara; Argentina Fil: Posadas, Paula Elena. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Laboratorio de Sistemática y Biología Evolutiva; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina Fil: Montoya Burgos, Juan Ignacio. Universidad de Ginebra; Suiza more...
- Published
- 2019
19. A continental-wide molecular approach unraveling mtDNA diversity and geographic distribution of the Neotropical genus Hoplias
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Juan Martín Díaz de Astarloa, Matías Delpiani, Sergio Bogan, Esteban Avigliano, Ezequiel Mabragaña, Yamila Paula Cardoso, Mariano González-Castro, Raphaël Covain, Nahuel Francisco Schenone, and Juan José Rosso more...
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0106 biological sciences ,0301 basic medicine ,HOPLIAS ,Molecular biology ,Biología ,lcsh:Medicine ,purl.org/becyt/ford/1.7 [https] ,Marine and Aquatic Sciences ,Fresh Water ,01 natural sciences ,DNA barcoding ,Biochemistry ,Hoplias malabaricus ,purl.org/becyt/ford/1 [https] ,Monophyly ,lcsh:Science ,Clade ,Phylogeny ,Energy-Producing Organelles ,Data Management ,Molecular systematics ,Multidisciplinary ,Phylogenetic analysis ,biology ,Geography ,Ecology ,Freshwater fish ,Otras Ciencias Naturales y Exactas ,Fishes ,Eukaryota ,Phylogenetic Analysis ,Biodiversity ,Mitochondria ,Phylogenetics ,Freshwater Fish ,Phylogeography ,Biogeography ,Vertebrates ,Cellular Structures and Organelles ,CIENCIAS NATURALES Y EXACTAS ,Research Article ,Freshwater Environments ,Species complex ,Computer and Information Sciences ,Ecological Metrics ,Argentina ,Bioenergetics ,010603 evolutionary biology ,DNA, Mitochondrial ,COI ,03 medical and health sciences ,Rivers ,Genetics ,Animals ,DNA Barcoding, Taxonomic ,Evolutionary Systematics ,Taxonomy ,Tropical Climate ,Evolutionary Biology ,Population Biology ,lcsh:R ,Ecology and Environmental Sciences ,Organisms ,Species diversity ,Genetic Variation ,Biology and Life Sciences ,Aquatic Environments ,Species Diversity ,Cell Biology ,FRESHWATER ,Bodies of Water ,biology.organism_classification ,Genetic divergence ,Research and analysis methods ,030104 developmental biology ,Molecular biology techniques ,Fish ,Evolutionary biology ,SUDAMERICA ,Hoplias ,Earth Sciences ,lcsh:Q ,Population Genetics - Abstract
With an estimate of around 9,000 species, the Neotropical region hosts the greatest diversity of freshwater fishes of the world. Genetic surveys have the potential to unravel isolated and unique lineages and may result in the identification of undescribed species, accelerating the cataloguing of extant biodiversity. In this paper, molecular diversity within the valuable and widespread Neotropical genus Hoplias was assessed by means of DNA Barcoding. The geographic coverage spanned 40 degrees of latitude from French Guiana to Argentina. Our analyses revealed 22 mitochondrial lineages fully supported by means of Barcode Index Number, Automatic Barcode Gap Discovery and phylogenetic analyses. This mtDNA survey revealed the existence of 15 fully supported mitochondrial lineages within the once considered to be the continentally distributed H. malabaricus. Only four of them are currently described as valid species however, leaving 11 mitochondrial lineages currently “masked” within this species complex. Mean genetic divergence was 13.1%. Barcoding gap analysis discriminated 20 out of the 22 lineages tested. Phylogenetic analyses showed that all taxonomically recognized species form monophyletic groups. Hoplias malabaricus sensu stricto clustered within a large clade, excluding the representatives of the La Plata River Basin. In the H. lacerdae group, all species but H. curupira showed a cohesive match between taxonomic and molecular identification. Two different genetic lineages were recovered for H. aimara. Given the unexpected hidden mitochondrial diversity within H. malabaricus, the COI sequence composition of specimens from Suriname (the type locality), identified as H. malabaricus sensu stricto, is of major importance., Facultad de Ciencias Naturales y Museo more...
- Published
- 2018
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20. A contribution to the checklist of fishes of San Luis province, Argentina
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Yamila Paula Cardoso, Sergio Bogan, Adrian Jauregui, Juan Manuel Meluso, María B. Cabrera, and Marta Susana Lizarralde
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ZOOLOGIA ,Quines River ,Fauna ,Biogeography ,DIVERSITY ,Argentina ,diversity ,purl.org/becyt/ford/1 [https] ,Ciencias Biológicas ,Zoología ,Luján River ,Ichthyology ,purl.org/becyt/ford/1.6 [https] ,lcsh:QH301-705.5 ,Ecology, Evolution, Behavior and Systematics ,biogeography ,QUINES ,Lujan River ,LUJAN ,Ecology ,biology ,Jenynsia multidentata ,Zoología, Ornitología, Entomología, Etología ,biology.organism_classification ,Cnesterodon decemmaculatus ,Checklist ,Fishery ,Taxon ,Geography ,lcsh:Biology (General) ,SAN LUIS ,ichthyology ,Freshwater fish ,San Luis ,CIENCIAS NATURALES Y EXACTAS - Abstract
San Luis province presents arheic and endorheic basins that are poorly understood in terms of their ichthyological composition. The samples taken recently from the main basins of this province have yielded data of undisputed biogeographic value for the knowledge of the ichthyofauna of San Luis, as well as for drawing up lists of species for watersheds with poor or absent previous records. Here, we cite Jenynsia multidentata from the Desaguadero and Bebedero rivers, Cnesterodon decemmaculatus for Chorrillos River, and Oligosarcus jenynsii for Luján, Quines and Quinto rivers. We add five taxa to the Nogolí River that have not been previously reported. We also present for the first time a list of the fish fauna from the Conlara, Luján and Quines basins. Our results provide 34 new records of freshwater fish distribution., Facultad de Ciencias Naturales y Museo more...
- Published
- 2015
21. A new lungfish (Dipnoi) from the Late Triassic of South America
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Federico L. Agnolin, Adriana Cecilia Mancuso, Federico Brissón Egli, Fernando Emilio Novas, Claudia Alicia Marsicano, Marcelo P. Isasi, Ana Zavattieri, and Sergio Bogan
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Lungfish ,010506 paleontology ,biology ,Argentina ,Paleontology ,010502 geochemistry & geophysics ,biology.organism_classification ,Triassic ,01 natural sciences ,Archaeology ,Ciencias de la Tierra y relacionadas con el Medio Ambiente ,Dipnoi ,Meteorología y Ciencias Atmosféricas ,CIENCIAS NATURALES Y EXACTAS ,Geology ,0105 earth and related environmental sciences - Abstract
Lungfishes belong to the sarcopterygian clade Dipnoi. Livingforms are represented by three genera distributed among SouthAmerica, Africa, and Australia. The oldest fossil record of lungfishesis Devonian (see Long, 2010), but they become notablyabundant in post-Paleozoic deposits (Martin, 1982; Schultze,2004). The oldest South American records of fossil lungfishescome from Permian beds in Brazil (Cox and Hutchinson, 1991;Toledo and Bertini, 2005; Toledo, 2006). These specimens consistof isolated tooth plates assigned to Ceratodontidae and Gnathorizidae.Triassic finds are restricted to a single and incompletetooth plate from the Santa Marıa Formation (Carnian) of Brazil(Richter and Toledo, 2008). The specimen was referred to Ptychoceratodus,being probably related to the European form P.phillipsi. Because of the paucity of the record, Triassic SouthAmerican lungfishes almost completely lack mention in mostpaleobiogeographical analyses of early Mesozoic dipnoan distributionand radiation. In Jurassic beds, the record is restricted toisolated plates belonging to Ceratodus and ?Arganodus? from isolatedlocalities in Brazil and Uruguay (Soto and Perea, 2010). Incontrast, the Cretaceous and Paleogene lungfish record is especiallyabundant and diverse (Fernandez et al., 1973; Pascual andBondesio, 1976; Toledo and Bertini, 2005; Apesteguıa et al.,2007; Cione et al., 2007, 2010; Agnolin, 2010; Cione and Gouiric,2012; Alves et al., 2013).Here, we expand the record of South American dipnoans,describing a tooth plate and associated jaw bone from the LateTriassic (Carnian) Potrerillos Formation at the Agua de las Avispasfossiliferous locality, Mendoza Province, Argentina (Fig. 1).This is a well-known fossiliferous spot that has yielded a largenumber of plant and arthropod specimens, as well as fragmentaryactinopterygian material (Zavattieri and Pramparo, 2006;Morel et al., 2010; Gallego et al., 2011; Lara et al., 2012). Thespecimen here described is assigned to a new species of the widespreadgenus Ptychoceratodus and is the most complete Triassicdipnoan from South America. Fil: Agnolin, Federico. Fundación de Historia Natural Félix de Azara; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina Fil: Bogan, Sergio. Fundación de Historia Natural Félix de Azara; Argentina Fil: Brisson, Eli Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina Fil: Isasi, Marcelo Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina Fil: Marsicano, Claudia Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina Fil: Zavattieri, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina Fil: Mancuso, Adriana Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina more...
- Published
- 2016
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22. First fossil records of silversides (Teleostei: Atheriniformes) from the Middle Pleistocene of Buenos Aires province, Argentina
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Martín de los Reyes, Marcos Martín Cenizo, and Sergio Bogan
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Teleostei ,Atheriniformes ,biology ,Pleistocene ,Osteology ,Argentina ,Paleontology ,biology.organism_classification ,Archaeology ,Sorgentinini ,Paleontología ,Silversides ,Geography ,Centinela del Mar ,Genus ,Animal Science and Zoology ,Atherinomorpha ,Odontesthes ,Ecology, Evolution, Behavior and Systematics - Abstract
This paper presents the fossil remains of silversides recovered in sedimentary sequences corresponding to Centinela del Mar district Bonaerian Stage-Age (Middle Pleistocene), Buenos Aires province, Argentina. The few only previously described fossil silversides are restricted to three Chilean and Argentinean Miocene localities. The silversides studied here present several diagnostic osteological characters that allow us to refer the remains to the genus Odontesthes. These records give us new data on the composition of the pleistocenic ictiofaunas of Argentina, besides representing the first fossil records of silversides from the Pampean region., Facultad de Ciencias Naturales y Museo more...
- Published
- 2009
23. Registro de Moridae (Teleostei: Gadiformes) en la Formación Chenque (Oligoceno Tardío-Mioceno Temprano) de la provincia de Chubut, Argentina Record of Moridae (Teleostei: Gadiformes) from the Chenque Formation (Late Oligocene - Early Miocene) from the Chubut province, Argentina
- Author
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Sergio Bogan and Federico L Agnolin
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