Siguiendo con los trabajos sobre tortugas fósiles presentados por miembros del Grupo de Biología Evolutiva de la UNED en el XVII Annual Meeting de la EAVP, llega el turno de las faunas de Niger. Concretamente en esta presentación se discuten las implicaciones sobre la diversidad de Pleurodira derivadas del hallazgo del primer caparazón relativamente completo hallado en el Cretácico Superior de dicho país.
El resumen es el siguiente:
The Maastrichtian (uppermost Cretaceous) levels of the south-western region of Niger have provide several remains of pleurodiran turtles. The large Nigeremys gigantea, represented by a skull, comes from those levels. It corresponds to a member of Bothremydidae, belonging to the abundant and diverse clade Taphrosphyini. A second representative of Bothremydidae has recently been recognized at these levels, corresponding to a new form of Taphrosphyini, currently under study. The analysis of unpublished material allow us to recognize the diversity of turtles from the Maastrichtian levels of that region as greater than that described so far. In this sense, the first almost complete shell identified in this area is presented here. It can also be attributed to a member of Pleurodira. However, its availability of characters is not compatible with that of the members of Taphrosphyini. The detailed anatomical description of this specimen allows us to discuss its systematic position. Its attribution to a new form cannot be ruled out.
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Más información:
- Imagen: Caparazón de un miembro de Taphrosphyini (Pleurodira, Bothremydidae) del Maastrichtiense.
- Referencia: A. Pérez-García, S.D. Chapman. 2019. Implications on the uppermost Cretaceous diversity of Pleurodira in Southwest Niger based on the finding of the first almost complete shell. XVII Annual Meeting of the European Association of Vertebrate Paleontologists, Abstract Book, 87.
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