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Explorando la biomecánica craneal de las tortugas Stereogenyini en el 5th Palaeontological Virtual Congress

Durante el pasado 5th Palaeontological Virtual Congress se presentó la comunicación titulada "Cranial biomechanics and feeding strategies in Stereogenyini turtles", realizada por Andrea Guerrero y Adán Pérez-García. Este trabajo fue reconocido con el Society of Vertebrate Paleontology award a la mejor presentación en diapositivas, lo cual nos llena de satisfacción. Este estudio investigó las adaptaciones biomecánicas del cráneo en tortugas Stereogenyini, analizando la relación entre su morfología y función. Se evaluó cómo las modificaciones palatinas reflejan estrategias de alimentación mediante reconstrucciones musculares y análisis de elementos finitos. El trabajo comparó distintos taxones para identificar trayectorias evolutivas dentro del grupo. Además, representa la primera reconstrucción de la musculatura craneal en este linaje, aportando nuevas perspectivas sobre su ecología trófica. A continuación, os dejamos el resumen perteneciente a este trabajo:
The evolution of the cranial morphology in extinct turtles relative to the functional performance remains poorly understood. Among side-necked turtles (Pleurodira), the extinct lineage Stereogenyini (Podocnemididae) stands out due to its unique modification of the palatine bones, forming a structure equivalent to a secondary palate. The acquisition of this feature, which varies in morphology and development among its representatives, probably reflect derived feeding strategies. This study investigates cranial biomechanical adaptations of Stereogenyini, focusing on the relationship between the cranial morphology and its function. This research aims to determine, through the analysis of several representatives which represent a spectrum of forms considering the development of the palatal modifications, how the observed morphological variations reflect adaptations to mechanical demands. The application of virtual techniques, including muscular reconstructions and finite element analysis, enables us to relate cranial differences to feeding behavior and the mechanical performance of the skull. Comparative analysis of different taxa within Stereogenyini will also shed light on the main cranial evolutionary trajectory or trajectories of the lineage. This study represents the first reconstruction of cranial musculature within this lineage, offering a new perspective on both the feeding strategies and the adaptive significance of their palatal structures.
----- Más información: Referencia: Guerrero, A., Pérez-García, A. 2025. Cranial biomechanics and feeding strategies in Stereogenyini turtles. In Vlachos et al. (Eds.), Book of Abstracts of the 5th Palaeontological Virtual Congress, 348.

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