El esqueleto apendicular de Bauruemys elegans en las X Jornadas Internacionales de Salas de los Infantes

Durante la celebración en Salas de los Infantes de la décima edición de las Jornadas de Dinosaurios y su entorno, se ha presentado por parte de miembros del Grupo de Biología Evolutiva en formato poster la comunicación titulada “Appendicular skeleton of the Upper Cretaceous turtle from Brazil Bauruemys elegans (Podocnemididae, Pleurodira)”, que fue galardonada con el premio ex aequo de mejor poster de jóvenes investigadores. En este estudio se presenta la descripción preliminar de elementos del esqueleto apendicular de la tortuga pleurodira Bauruemys elegans del Cretácico de Brasil. Hasta entonces solo se conocía esta especie por su caparazón y cráneo. Los elementos estudiados corresponden con un ejemplar depositado en el Museo Nacional de Historia Natural de París. Se ha comparado el esqueleto apendicular de Bauruemys elegans con estos mismos elementos de otros taxones, tanto fósiles como actuales, de la familia Podocnemididae:

The studies of fossil turtles are normally focused on the shell and the skull. Thus, the appendicular skeleton is unknown for most fossil species. Bauruemys elegans is a podocnemidid turtle (Testudines, Pleurodira) described in the Upper Cretaceous (Turonian-Santonian) Adamantina Formation of Brazil. In Suarez (1969), the original publication where the taxon was described, the carapace, the plastron and the skull were characterised. All of them being part of the holotype, which also included both femora, coracoid and scapula, but they are not described or figured in that publication, and they remain unpublished.

Although some studies of this species were subsequently published, no appendicular elements have been so far figured or described. In the list of specimens that could be referred to this species elaborated by Gaffney et al. (2011) in the revision of the podocnemidid turtles, they noted that, in addition to the appendicular skeleton of the holotype, some other specimens also preserve elements of the appendicular skeleton. However, these elements were neither figured or described, and they remain unpublished.

We present here the first detail description of some elements of the appendicular skeleton of Bauruemys elegans. We characterised some elements of scapular and pelvic girdles, but also others of the limbs. These remains belonging to a partial unpublished individual of the species, deposited in the Muséum national d’Histoire naturelle of Paris (France). We compare these bones with those of other podocnemidids turtles, including both extinct and extant taxa.

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Más información:

Referencia: Gutiérrez-Gálvez, M., Pérez-García, A. Appendicular skeleton of the Upper Cretaceous turtle from Brazil Bauruemys elegans (Podocnemididae, Pleurodira). In P. Huerta, F. Torcida, J.I. Canudo and X. Pereda (eds.). Abstract Book/Libro de resúmenes X Jornadas Internacionales sobre Paleontología de Dinosaurios y su entorno, 119-120.

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