{"id":"RDUUNC_3299c8bd22027254acd66155b521273e","dc:title":"Early-Middle Ordovician graptolites from the Argentine Puna: quantitative paleobiogeographic analysis based on a systematic revision","dc:creator":"Toro, Blanca A.","dc:date":"2020","dc:description":["This taxonomic analysis confirms the occurrence of twenty-three taxa in the studied region, from which S. praecursor, B. extremus and E. pusillus were not previously documented in South America. Additionally, it contributes to the clarification of the faunal graptolite affinities earlier postulated for the Northwestern Argentina","Este estudio taxon\u00f3mico confirma la presencia de veintitr\u00e9s especies en la regi\u00f3n estudiada, de las cuales S. praecursor, B. extremus y E. pusillus no hab\u00edan sido mencionadas previamente para Am\u00e9rica del Sur, y contribuye a clarificar las afinidades faun\u00edsticas anteriormente sugeridas para los graptolitos del Noroeste argentino.","The updated taxonomic revision of the Early\u2013Middle Ordovician graptolites from the eastern Argentine Puna allows describing Sigmagraptus praecursor, Baltograptus extremus, B. geometricus, B. vacillans, Cymatograptus protobalticus, Expansograptus constrictus, E. pusillus, E. similis and Corymbograptus v-fractus tullbergi for the first time in this region. The analyzed material was collected from the volcano-sedimentary deposits assigned to the Cochinoca-Escaya Magmatic-Sedimentary Complex, and exposed at the Mu\u00f1ayoc and Santa Rosa sections, Jujuy Province. This taxonomic analysis confirms the occurrence of twenty-three taxa in the studied region, from which S. praecursor, B. extremus and E. pusillus were not previously documented in South America. Additionally, it contributes to the clarification of the faunal graptolite affinities earlier postulated for the Northwestern Argentina. Quantitative paleobiogeographic analyses of clusters and principal coordinate were carried out, including the described species as well as previous certain graptolite assignations for the Puna region, to quantify its faunal affinities with Baltoscandia, Great Britain, North America and Southwestern China. Finally, our results are discussed and compared with those formerly obtained in paleobiogeographic analyses based on different fossil groups from the Northwestern Argentina.","La revisi\u00f3n taxon\u00f3mica actualizada de los graptolitos del Ordov\u00edcico Temprano\u2013Medio de la Puna Oriental de Argentina permite describir por primera vez para esta regi\u00f3n las especies: Sigmagraptus praecursor, Baltograptus extremus, B. geometricus, B. vacillans, Cymatograptus protobalticus, Expansograptus constrictus, E. pusillus, E. similis y Corymbograptus v-fractus tullbergi. El material analizado fue coleccionado de dep\u00f3sitos asignados al Complejo Magm\u00e1tico-Sedimentario Cochinoca-Escaya, expuesto en las secciones de Mu\u00f1ayoc y Santa Rosa, en la Provincia de Jujuy. Este estudio taxon\u00f3mico confirma la presencia de veintitr\u00e9s especies en la regi\u00f3n estudiada, de las cuales S. praecursor, B. extremus y E. pusillus no hab\u00edan sido mencionadas previamente para Am\u00e9rica del Sur, y contribuye a clarificar las afinidades faun\u00edsticas anteriormente sugeridas para los graptolitos del Noroeste argentino. Se presentan adem\u00e1s, los an\u00e1lisis paleobiogeogr\u00e1ficos cuantitativos de agrupamiento y de coordenadas principales, que incluyen las especies descriptas en este trabajo y otras asignaciones seguras realizadas previamente para la Puna, a fin de cuantificar sus afinidades faun\u00edsticas con Baltoescandinavia, Gran Breta\u00f1a, Am\u00e9rica del Norte y el Suroeste de China. Por \u00faltimo, se discuten y comparan nuestros resultados con aquellos an\u00e1lisis paleobiogeogr\u00e1ficos previos, obtenidos a partir de distintos grupos de f\u00f3siles del Noroeste argentino."],"dc:format":["application\/zip"],"dc:language":["eng"],"dc:type":"dataset","dc:subject":["Dapingian","Graptolites","Northwestern Argentina","Taxonomy","Paleobiogeography","Paleobiogeograf\u00eda","Floiano","Dapingiano","Mu\u00f1ayoc","Graptolitos","Noreste argentino","Taxonom\u00eda"],"dc:coverage":["ARG"],"dc:rights":["info:eu-repo\/semantics\/openAccess"],"dc:identifier":"https:\/\/repositoriosdigitales.mincyt.gob.ar\/vufind\/Record\/RDUUNC_3299c8bd22027254acd66155b521273e"}