La posición filogenética de Duerosuchus piscator, cocodrilo del Eoceno medio de la Cuenca del Duero, en el XVII Annual Meeting de la EAVP

Duerosuchus piscator es un cocodrilo de pequeño tamaño del Eoceno medio definido por L. Alonso-Santiago y L. Alonso-Andres en 2009 a partir de diferentes restos craneales y postcraneales procedentes de la localidad zamorana de Corrales del Vino (Castilla y León, España). Aunque los autores realizaron una descripción preliminar y una diagnosis para esta nueva especie, no proporcionaron un análisis de sus relaciones de parentesco dentro del grupo Crocodylia. Ahora, se presenta en el XVII Annual Meeting de la EAVP que se está celebrando en Bruselas una comunicación con el título "On the systematic position of the eusuchian Duerosuchus piscator (middle Eocene, Spain)", a partir de los análisis filogenéticos llevados a cabo tras una revisión detallada de la especie. El resumen es el siguiente:

Duerosuchus piscator is a middle Eocene eusuchian crocodile only known by several remains from Corrales del Vino (Zamora, Spain). The species was defined based on an incomplete skull, the partial lower jaws, several osteoderms and some vertebrae. A detailed study of these remains allows us to question the attribution of all these remains to the same form. Just the cranial remains are considered as indisputably attributable to it, the validity of this species being supported. The phylogenetic relationships of Duerosuchus piscator within Crocodylia was not been, until now, analyzed. The present study provides a detailed description and an amended diagnosis for Duerosuchus piscator, which is included for the first time in a phylogenetic analysis in order to establish its systematic position. As a result of this study, the Eocene crocodyliform paleobiodiversity in the Duero Basin is recognized as composed by a notosuchian (Iberosuchus macrodon), as well as three forms of Crocodylia, belonging to three different clades: the alligatoroid Diplocynodon tormis, the crocodyloid Asiatosuchus sp., and Duerosuchus piscator, which is here identified as being part of another lineage up to now unrecognized in the Iberian fossil record.

Más información:

• Imagen: Daniel Vidal, uno de los representantes del Grupo de Biología Evolutiva de la UNED presente en el congreso, posa con el póster de la comunicación.
• Referencia: Narváez, I., De Celis, A., Martín de Jesús, S., Pérez-García, A., Rodríguez, A., Ortega, F. 2019. On the systematic position of the eusuchian Duerosuchus piscator (middle Eocene, Spain). XVII Annual Meeting of the European Association of Vertebrate Paleontologists, Abstract Book, 79.