THE YOUNGEST CROCODYLIFORM RECORD FROM PATAGONIA

Autores

  • Gabriel Lio Laboratorio de Anatomía Comparada y Evolución de los Vertebrados Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"
  • Federico Lisandro Agnolin Laboratorio de Anatomía Comparada y Evolución de los Vertebrados Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" Fundación de Historia Natural
  • Nicolas Roberto Chimento Laboratorio de Anatomía Comparada y Evolución de los Vertebrados Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"
  • Pablo Chafrat Departamento de Biodiversidad, Museo Patagónico de Ciencias Naturales "Juan Carlos Salgado"

Resumo

After K-P extinction, Patagonian crocodyliforms became less diverse, and scarcer in Tertiary layers. The specimen here described comes from "Puerta del Diablo" ranch at the Natural Protected Area of Paso Córdoba, southwestern of General Roca city (Río Negro province, Argentina) and was found in strata from the Chichinales Formation, Early Miocene (Colhuehuapian SALMA). MPCN-PV-174 is represented by an isolated fragment of the posterior region of the skull roof. This fragmentary material is assigned to an indeterminate Crocodyliformes. Previous contributions identified the most recent record of a crocodyliform from Patagonia as coming from the Early Oligocene. The specimen here described indicates that crocodyliforms were still present in the Early Miocene of Patagonia. This suggests that suitable habitats and climate for the existence of crocodilians were still available in northeastern Patagonia, at least.

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Publicado

2019-10-05

Como Citar

LIO, G.; AGNOLIN, F. L.; CHIMENTO, N. R.; CHAFRAT, P. THE YOUNGEST CROCODYLIFORM RECORD FROM PATAGONIA. Brazilian Geographical Journal, Ituiutaba, v. 8, n. 2, p. 136–143, 2019. Disponível em: https://seer.ufu.br/index.php/braziliangeojournal/article/view/31389. Acesso em: 28 maio. 2024.