A new pipoid frog (Anura,Pipimorpha) from the Paleogene of Patagonia. Paleobiogeographical implications |
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| Authors: | Alexis M Aranciaga Rolando Federico L Agnolin Julián Corsolini |
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| Institution: | 1. Museo Argentino de Ciencias Naturales ‘Bernardino Rivadavia’, Consejo Nacional de Investigaciones Científicas y Técnicas - CONICET, Buenos Aires, Argentina;2. Fundación de Historia Natural ‘Félix de Azara’, Universidad Maimónides, Buenos Aires, Argentina;3. Museo de Geología y Paleontología del Lago Gutierrez “Dr. Rosendo Pascual”, Calle Bosque Petrificado 367, Villa Los Coihues, Lago Gutiérrez, R8405ZAB San Carlos de Bariloche, Río Negro, Argentina |
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| Abstract: | The aim of the present contribution is to describe a new genus and species of Pipoidea from the Huitrera Formation (Eocene) from Patagonia, Argentina. The new genus shows a unique combination of characters indicating that it is a valid taxon different from other pipimorphs, including the coeval Llankibatrachus truebae. The phylogenetic analysis resulted in the nesting of the new taxon within a previously unrecognized endemic clade of South American aglossans. This new clade turns out to be the sister-group of crown-group Pipidae. This phylogenetic proposal reinforces the hypothesis sustaining the dispersal of pipids between Africa and South America through an island chain or a continental bridge across the Atlantic Ocean by Early Tertiary times. |
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| Keywords: | Corresponding author Panpipidae South America Argentina Paleogene Island chain Panpipidae Amérique du Sud Argentine Paléogène Chaîne insulaire |
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