Osteological reassessment of Muyelensaurus pecheni (Dinosauria: Sauropoda): Systematics and its Phylogenetic implications for the clade Rinconsauria

Since its original definition, Rinconsauria has been considered a clade with high taxonomic diversity. This peculiarity may result from several factors, including an incomplete anatomical description, missing data, a unique combination of morphological characters, or even the presence of multiple species among the specimens referred to Muyelensaurus pecheni. In this study, we provide a detailed description of the holotype, paratypes, and other originally referred remains of Muyelensaurus pecheni, and we analyze their phylogenetic position using three independent datasets under both equal-weight and extended implied-weight approaches to provide an updated interpretation.