| Journal: | Ameghiniana |
| Database: | PERIÓDICA |
| System number: | 000390305 |
| ISSN: | 0002-7014 |
| Authors: | Casal, Gabriel A1 Martínez, Rubén D1 Ibiricu, Lucio M2 Gonzalez Riga, Bernardo3 Foix, Nicolás4 |
| Institutions: | 1Universidad Nacional de la Patagonia, Laboratorio de Paleovertebrados, Comodoro Rivadavia, Chubut. Argentina 2Consejo Nacional de Investigaciones Científicas y Técnicas, Centro Nacional Patagónico, Puerto Madryn, Chubut. Argentina 3Universidad Nacional de Cuyo, Laboratorio de Dinosaurus, Mendoza. Argentina 4Universidad Nacional de la Patagonia San Juan Bosco, Departamento de Geología, Comodoro Rivadavia, Chubut. Argentina |
| Year: | 2013 |
| Season: | Dic |
| Volumen: | 50 |
| Number: | 6 |
| Pages: | 571-592 |
| Country: | Argentina |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Aniksosaurus darwini is a coelurosaurian theropod from the Bajo Barreal Formation (Upper Cretaceous), south of Chubut province, Patagonia, Argentina. The fossils include postcranial remains of 5 individuals and they were preserved in a mantle overbank deposit associated to a fluvial system of low sinuosity. A detailed analysis on the biostratinomic, fossildiagenetic, and paleoenvironmental aspects of the site of occurrence of Aniksosaurus, allows us to recognize two meteorization stages and their possible association with the origin of accumulation of the skeletons. Moreover, tooth marks in one of the femora, preliminary, are assigned to a small crocodyliform. The taphonomic study adds new anatomic evidences related to soft tissues. The holotype, MDT-Pv 1/48, is represented by an articulated right hindlimb, including, femur, tibia, metatarsals and phalanges. The subaerial weathering and abrasion due to transport on the femur strongly contrast with the preservation of the rest of the hindlimb bones, suggesting the presence of a protector soft tissue resembling the podoteca seen in extant birds. The presence of this soft tissue in Aniksosaurus, could support the early occurrence of this feature in basal coelurosaurians |
| Disciplines: | Geociencias, Biología |
| Keyword: | Geología, Anatomía e histología, Paleontología, Biostratinomia, Fósiles, Diagénesis, Tejidos blandos, Therapoda, Cretácico |
| Keyword: | Earth sciences, Biology, Geology, Anatomy and histology, Paleontology, Biostratinomy, Fossils, Diagenesis, Soft tissues, Theropoda, Cretaceous |
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