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A new species of Notobatrachus (Amphibia, Salientia) from the Middle Jurassic of northwestern Patagonia

Published online by Cambridge University Press:  20 May 2016

Ana Maria Báez  and
Laura Nicoli
Ana Maria Báez
Affiliation:
Departamento de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Pabellón II Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina,
Laura Nicoli
Affiliation:
Departamento de Ciencias Geológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Pabellón II Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina,
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Abstract

Notobatrachus degiustoi is the most completely known Jurassic frog and has been recorded in many outcrops of the La Matilde Formation of the Deseado Massif area in southern Patagonia. Herein, we erect a new species of the genus based on partially articulated remains collected from the Callovian Las Chacritas Member of the Cañadón Asfalto Formation, about 500 km northwest of the northern limit of the known geographical distribution of N. degiustoi. The new species differs from the latter in having a maxilla with a distinct pterygoid process and lacking teeth at least along the posterior two-thirds of its length, and a complete maxillary arch. We also provide an expanded diagnosis of Notobatrachus. This finding adds to our understanding of the early diversification of frogs.

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Type
Research Article
Information
Journal of Paleontology , Volume 82 , Issue 2 , March 2008 , pp. 372 - 376
Copyright
Copyright © The Paleontological Society 

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