The appendicular skeleton of Rinconsaurus caudamirus (Sauropoda: Titanosauria) from the Upper Cretaceous of Patagonia, Argentina

dc.creatorPérez Moreno, Agustín
dc.creatorOtero, Alejandro
dc.creatorCarballido, José Luis
dc.creatorSalgado, Leonardo
dc.creatorCalvo, Jorge Orlando
dc.date2022-10
dc.date.accessioned2023-08-31T00:20:46Z
dc.date.available2023-08-31T00:20:46Z
dc.identifierhttp://hdl.handle.net/11336/202296
dc.identifierPérez Moreno, Agustín; Otero, Alejandro; Carballido, José Luis; Salgado, Leonardo; Calvo, Jorge Orlando; The appendicular skeleton of Rinconsaurus caudamirus (Sauropoda: Titanosauria) from the Upper Cretaceous of Patagonia, Argentina; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 142; 105389; 10-2022; 1-32
dc.identifier0195-6671
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8543337
dc.descriptionRinconsaurus caudamirus, from the Bajo de la Carpa Formation (Santonian), Río Negro, Argentina, is represented by several axial and appendicular elements from, at least, four specimens. The axial skeleton of this taxon was described in detail in a recent contribution, pending a complete analysis and description of its appendicular skeleton. This contribution focuses on the description of the appendicular skeleton of Rinconsaurus and its phylogenetic relationships, considering the new information provided here. Rinconsaurus clearly differs from other titanosaurs for the presence of several autapomorphic characters and for a unique association of characters, some of which are also present in lognkosaurians, aeolosaurines and saltasaurines titanosaurs, and by having a scapula with a scapular blade angled 65° with respect to the coracoid articulation, similar to that of Bellusaurus, Dreadnoughtus and Muyelensaurus. Equations for estimating body mass in sauropods based on long bone circumference suggest a body mass of at least 3–5 tonnes for the largest individuals of Rinconsaurus, being lighter than saltasaurines, but heavier than aeolosaurines. Rinconsaurus was incorporated into an expanded version of a phylogenetic data matrix along with several contemporary South American titanosaurs. The resulting data matrix comprises 102 taxa scored for 431 characters, and our phylogenetic analysis retrieves Rinconsaurus as a member of the clade Rinconsauria. For its part, the clade Rinconsauria, in which Aeolosaurini is nested, is recovered within a diverse Lognkosauria. When the resulting trees are time calibrated and taking into account the position of Ninjatitan within Rinconsauria, there results that the possible origin of the clades Lognkosauria and Rinconsauria (among other titanosaur clades) could have occurred towards the beginning of the Early Cretaceous.
dc.descriptionFil: Pérez Moreno, Agustín. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.descriptionFil: Otero, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina
dc.descriptionFil: Carballido, José Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.descriptionFil: Salgado, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
dc.descriptionFil: Calvo, Jorge Orlando. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue; Argentina. Grupo de Transferencia Proyecto Dino; Argentina
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherAcademic Press Ltd - Elsevier Science Ltd
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2022.105389
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0195667122002531
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subjectAPPENDICULAR SKELETON
dc.subjectPATAGONIA
dc.subjectPHYLOGENY
dc.subjectRINCONSAURUS
dc.subjectTITANOSAURIA
dc.subjectUPPER CRETACEOUS
dc.subjecthttps://purl.org/becyt/ford/1.5
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleThe appendicular skeleton of Rinconsaurus caudamirus (Sauropoda: Titanosauria) from the Upper Cretaceous of Patagonia, Argentina
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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