Resumen

VALERIO, Ana L.  y  LAURITO, César A.. A new evidence of a juvenile estate of Pliometanastes protistus and its relationship with ?Pliometanastes galushai Hirschfeld & Webb, 1968 (Xenarthra, Megalonychidae) for the Upper Miocene of Costa Rica. Rev. Geol. Amér. Central [online]. 2014, n.51, pp.159-163. ISSN 0256-7024.

The aim of this paper is to describe a fragment of left mandible of a juvenile specimen of Pliometanastes. That found brings some light about the phyletic relations among Pliometanastes protistus Hirschfeld & Webb, 1968 and ?Pliometanastes galushai Hirschfeld & Webb, 1968, and strongly suggests that Pliometanastes is a monospecific genus.

Palabras clave : Mammalia; Xenarthra; Folivora; Pilosa; Pliometanastes; Upper Miocene; Costa Rica.

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