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Palci, Alessandro, Caldwell, Michael W. and Albino, Adriana M. 2013. Emended Diagnosis and Phylogenetic Relationships of the Upper Cretaceous Fossil Snake Najash rionegrina ApesteguÃa and Zaher, 2006. Journal of Vertebrate Paleontology. Vol. 33(1), pp. 131-140.
Palci, A., Caldwell, M. W. and Albino, A. M. 2013. Emended diagnosis and phylogenetic relationships of the Upper Cretaceous fossil snake Najash rionegrina Apesteguía and Zaher, 2006. Journal of Vertebrate Paleontology. Vol. 33(1), pp. 131-140.