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

49

Citations

25

References

2004

Year

Abstract

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

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