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| Bogan,Sergio; Sidlauskas,Brian; Vari,Richard P; Agnolin,Federico. |
| 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. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Argentina; Fossil; Leporinus; Osteology; Phylogeny. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300008 |
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| Bogan,Sergio; Agnolin,Federico L.. |
| Se describe un conjunto de dientes fósiles que proceden de sedimentos marinos de la Formación Jagüel (Maastrichtiano), de la localidad de Bajo Trapalcó, provincia de Río Negro, Patagonia, Argentina. La ictiofauna aquí descripta es la primera para la Formación y se compone de unos seis taxones diferentes de Chondrichthyes (Serratolamna serrata, Squalicorax pristodontus, Cretalamna appendiculata, Carcharias sp., Odontaspis sp. y cf. Pseudohypolophus mcnultyi) y dos Teleostei del género Enchodus (aff. E. ferox y aff. E. gladiolus). Serratolamna serrata es el taxón mejor representado del conjunto, y constituye la cita más austral conocida en la distribución de esta especie y el primer registro fósil para Argentina. Los registros de Enchodus, Squalicorax... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maastrichtiano; Serratolamna serrata; Lamniformes; Squalicorax; Enchodus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492010001200001 |
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| Lucero,Sergio O.; Gariboldi,María Constanza; Bauni,Valeria; Meluso,Juan Manuel; Castillo,Daniela del; Agnolin,Federico L.; Bogan,Sergio. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Megaptera novaeangliae; Humpback whale; Delta del Río Paraná; Haplotypes; Argentina. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100200 |
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