La cintura pélvica del simosáurido Paludidraco multidentatus en el XX Annual Meeting de la EAVP

Miembros del Grupo de Biología Evolutiva de la UNED han presentado durante el 20th Annual Conference of the European Association of Vertebrate Palaeontologists, el trabajo titulado “The pelvic girdle of the simosaurid Paludidraco multidentatus holotype (Sauropterygia)” en formato póster. En esta comunicación se ha presentado un estudio anatómico comparativo de los elementos pélvicos preservados en el holotipo del taxón español P. multidentatus. La anatomía pélvica del clado Simosauridae es actualmente poco conocida y comprendida. En este trabajo, se hace una comparación anatómica preliminar de los elementos pélvicos de P. multidentatus con los de su taxón hermano, Simosaurus gaillardoti, además de con los de otros sauropterigios. A continuación, os dejamos el resumen perteneciente a este trabajo:

Simosauridae is a clade of nothosauroid eosauropterygians ranging from the Anisian or Ladinian (Middle Triassic) to the Carnian (Late Triassic) of the Western Tethys region (Middle East and Europe). This group is exclusively composed by Simosaurus gaillardoti (from the Ladinian of France and Germany), defined more than a century ago, and the recently named Paludidraco multidentatus (from the Carnian of Spain). Simosaurus gaillardoti was recognized as an active predator, in contrast with P. multidentatus, these significantly different lifestyles being reflected in both the cranial and postcranial skeleton. In this context, the latter species shows anatomical features of the postcranium interpreted as associated with adaptations for slow movement near the marine bottom and, hence with a radically different type of locomotion. Nonetheless, the postcranial anatomy of simosaurids is poorly known. Thus, the pelvic region in particular is only known for S. gaillardoti, which is represented by numerous and well-preserved remains of ilia, ischia and pubes of several individuals. The holotype of P. multidentatus corresponds to a relatively complete skeleton, which preserves most pelvic bones, so far not described. Morphological differences in the pelvic region associated with their locomotion, and derived from their interpreted radically different ecological roles, between both taxa are expected. A preliminary anatomical description of the pelvic elements preserved in the holotype of P. multidentatus and their comparison with those of its sister taxon and other sauropterygians is presented here.

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Más información:

• Referencia: Cabezuelo-Hernández, A., de Miguel Chaves, C., Ortega, F., Pérez-García, A. 2023. The pelvic girdle of the simosaurid Paludidraco multidentatus holotype (Sauropterygia). In: Alba, D.M., Marigó, J., Nacarino-Meneses, C., Villa, A. (Eds.), Book of Abstracts of the 20th Annual Conference of the European Association of Vertebrate Palaeontologists, 26th June– 1st July 2023. Palaeovertebrata, Special Volume 1-2023: 22. DOI: 10.18563/pv.eavp2023 (p. 49).