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      New primate genus from the Miocene of Argentina.

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          Abstract

          Killikaike blakei is a new genus and species of anthropoid from the late Early Miocene of southeastern Argentina based on the most pristine fossil platyrrhine skull and dentition known so far. It is part of the New World platyrrhine clade (Family Cebidae; Subfamily Cebinae) including modern squirrel (Saimiri) and capuchin monkeys (Cebus) and their fossil relatives known from Early to Middle Miocene and subrecent periods. Living cebines are relatively large-brained, adroit predatory foragers and live within complex social groups, and wild capuchins exhibit a wide range of behaviors associated with enhanced intelligence. We show that K. blakei lacks diagnostic derived characteristics of the lower face and premolar dentition that are shared by modern cebines, but its strongly vaulted frontal bone and capacious anterior cranial fossa indicate the early evolution of an enlarged forebrain.

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          Author and article information

          Journal
          Proc. Natl. Acad. Sci. U.S.A.
          Proceedings of the National Academy of Sciences of the United States of America
          Proceedings of the National Academy of Sciences
          0027-8424
          0027-8424
          Apr 04 2006
          : 103
          : 14
          Affiliations
          [1 ] Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Investigaciones en Evolución y Biodiversidad, Sede Esquel, Universidad Nacional de la Patagonia San Juan Bosco, Sarmiento 849, 9200 Esquel, Argentina. mtejedor@lieb.org.ar
          Article
          0506126103
          10.1073/pnas.0506126103
          1459373
          16567649
          3790d409-c9fd-4bc1-98a1-0b824e4dbbb2
          History

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