17.7.19

Nuevos datos sobre las tortugas pleurodiras de Sobrarbe en el XVII Annual Meeting de la EAVP


Volviendo al registro de tortugas fósiles españolas, en el recientemente celebrado XVII Annual Meeting de la EAVP, en Bruselas, se presentó un trabajo en el que se discutía la presencia de un segundo miembro de Pleurodira en el Eoceno medio de Sobrarbe, en Huesca, donde, hasta ahora, únicamente la forma de agua dulce Neochelys había sido reconocida.

El resumen es el siguiente:

The record of pleurodiran turtles is relatively abundant and diverse in the Eocene levels of Western Europe. Most of these findings correspond to members of Podocnemididae. Among them, the diverse Neochelys is the best represented. In addition to the finding of several forms of terrestrial and freshwater cryptodires, the presence of Neochelys had been recognized in the Spanish Lutetian (middle Eocene) Sobrarbe Formation of the Ainsa Basin (southern Pyrenees, Huesca). This freshwater turtle has been identified in several sites of that Basin. The first complete shell of a turtle from this Formation is presented here. It can be attributed to a podocnemidid pleurodiran turtle. However, it does not correspond to a member of Neochelys. This finding has been performed in the Castejón de Sobrarbe-41 fossil site which corresponding to an intertidal floodplain, where several littoral fossils have been recognized, including sirenian marine mammals. The systematic position of this turtle is discussed, especially taking into account the available information about the poorly known European littoral form Eocenochelus, whose type species (i.e. Eocenochelus eremberti), from the Franco-Belgian Basin, also comes from Lutetian levels.

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Más información:
  • Imagen: Caparazón de la pleurodira litoral del Eoceno de Europa Eocenochelus.
  • Referencia: A. Pérez-García, E. Díaz-Berenguer, A. Badiola, J.I. Canudo. 2019. Identification of a second member of Pleurodira at the middle Eocene levels of the Spanish Ainsa Basin. XVII Annual Meeting of the European Association of Vertebrate Paleontologists, Abstract Book, 88.

1 comentario:

Eduardo Zegarra dijo...

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