Multiple paleopathologies in the dinosaur Bonitasaura salgadoi (Sauropoda: Titanosauria) from the Upper Cretaceous of Patagonia, Argentina
| Autor: | Ignacio Alejandro Cerda, Pablo Ariel Gallina, Romina González |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
010506 paleontology Titanosaur 010603 evolutionary biology 01 natural sciences Ciencias de la Tierra y relacionadas con el Medio Ambiente medicine SOUTH AMERICA Femur Sinus (anatomy) 0105 earth and related environmental sciences Sauropoda biology TITANOSAURS Bonitasaura Paleontology Enthesophyte Anatomy OSSEOUS ABNORMALITIES biology.organism_classification medicine.disease PALEOBIOLOGY Vertebra medicine.anatomical_structure Type specimen Meteorología y Ciencias Atmosféricas CIENCIAS NATURALES Y EXACTAS |
| Popis: | Bones in the fossil record sometimes exhibit unusual structures that can be attributed to pathologies, taphonomic alterations, or morphological variation. The goal of this work is to describe three bone abnormalities present in the type specimen of Bonitasaura salgadoi from the Cretaceous of north Patagonia, Argentina. The studied material corresponds to a left femur, a left metatarsal III, and a right prezygapophysis of a mid-caudal vertebra. Macroscopic and/or histological examinations were conducted, and a discussion concerning the origin of each abnormality is provided. The results of this study suggest that the anomalous structures are pathologies. In the femur, an osteoblastic tumor was identified by the presence of a large outgrowth of ovoid appearance with a spiculated microstructural pattern. The metatarsal III shows an enthesophyte (or bone spur) based on its location, shape and growth in parallel to the long axis of the bone element. Finally, the abnormal tissue observed in the prezygapophysis of the caudal vertebra was determined to be an infection by the presence of reactive new bone associated with a local widening of the subperiosteal margin and a sinus of drainage. This is the first report of multiple pathologies in a single specimen of a titanosaur, and it provides new insights about paleopathologies in sauropod dinosaurs. Fil: González, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina Fil: Gallina, Pablo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Maimónides; Argentina Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Río Negro. Sede Alto Valle. Instituto de Investigaciones en Paleobiología y Geología; Argentina |
| Databáze: | OpenAIRE |
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