The pelvic and hindlimb myology of the basal titanosaur Epachthosaurus sciuttoi (Sauropoda: Titanosauria)
| Autor: | Lucio Manuel Ibiricu, Gabriel Casal, Rubén D. Martínez |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
EPACHTHOSAURUS SCIUTTOI 010506 paleontology animal structures biology Titanosaur PELVIS AND HINDLIMB Anatomy Hindlimb biology.organism_classification 010603 evolutionary biology 01 natural sciences Paleontología Ciencias de la Tierra y relacionadas con el Medio Ambiente Basal (phylogenetics) Myology MYOLOGICAL RECONSTRUCTION Epachthosaurus TITANOSAURIA General Agricultural and Biological Sciences CIENCIAS NATURALES Y EXACTAS 0105 earth and related environmental sciences Sauropoda |
| Zdroj: | Historical Biology. 32:773-788 |
| ISSN: | 1029-2381 0891-2963 |
| Popis: | Epachthosaurus sciuttoi is a basal titanosaur from the early Late Cretaceous of central Patagonia, Argentina. Here, we present the reconstruction of the pelvic and hindlimb musculature of this titanosaur, based on the soft tissue data of extant archosaurs. The majority of the pelvic, hindlimb and pes muscles are within a decisive and positive level of inference. Comparison with a derived titanosaur such as Neuquensaurus, shows several morphological differences which are directly related with the muscular attachments, supporting differences about the musculature arrangement between these two sauropod dinosaurs. For example, the anterior projection of the preacetabular process of Neuquensaurus extends more laterally, whereas in Epachthosaurus the preacetabular process is laterally less extended. The fibular lateral tuberosity in Neuquensaurus is closer to the fibular head than it is in Epachthosaurus. The femoral fourth trochanter in Neuquensaurus is closer to the femoral head than it is in Epachthosaurus. Likewise, the caudofemoralis longus may have extended more distally in the tail in Epachthosaurus.These differences, among others, may have influenced the muscular arrangement and, therefore, the locomotor function abilities of these titanosaurs. Finally, this myological description of Epachthosaurus, where twenty one muscles were reconstructed, constitutes useful data for researches interested in functional anatomy. Fil: Ibiricu, Lucio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina Fil: Martínez, Rubén Darío. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina Fil: Casal, Gabriel. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|