A new look at an old frog: the Jurassic Notobatrachus Reig from Patagonia

摘要: Abstract. About 100 specimens of the stem-anuran Notobatrachusdegiustoi, from several localities Middle-Late Jurassic La Matilde Formation southern Patagonia, were examined. This was aimed at clarifying numerous controversial aspects its anatomy and executing an updated restoration skeleton, presented herein. Additionally, few available immature provide some data on osteogenesis this evolutionarily significant taxon. study also revealed variation in morphology adult sacral region, being more evident among one localities. Resumen. UNA NUEVA MIRADA A ANTIGUA RANA: NOTOBATRACHUS REIG DEL JURASICO DE PATAGONIA. Fueron examinados alrededor de ejemplares del stem-anuro Notobatrachusdegiustoi provenientes varias localidades la Formacion (Jurasico Medio-Superior) en el extremo sur Patagonia. Este analisis tuvo como objetivo clarificar numerosos aspectos controvertidos su anatomia y elaborar una reconstruccion actualizada esqueleto, presentada aqui. Ademas, los pocos especimenes inmaduros disponibles proveyeron datos acerca este taxon evolutivamente significativo. estudio revelo tambien variacion morfologia adulta region sacra, siendo esta mas evidente entre las localidades.