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Artículo

The appendicular osteology of Patagotitanmayorum (Dinosauria, Sauropoda)

Otero, AlejandroIcon ; Carballido, José LuisIcon ; Pérez Moreno, AgustínIcon
Fecha de publicación: 09/2020
Editorial: Society of Vertebrate Paleontology
Revista: Journal of Vertebrate Paleontology
ISSN: 0272-4634
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Paleontología

Resumen

Its huge size, excellent preservation, and completeness make Patagotitan mayorum a unique opportunity to explore the anatomy, paleobiological, and phylogenetic aspects linked to gigantism within Sauropoda. In this regard, we describe the appendicular skeleton of this titanosaurian species from the late Albian-aged Cerro Barcino Formation of Chubut Province, Argentina. The diagnosis of Patagotitan mayorum is revised, increasing the number of identified autapomorphies (i.e., lateral surface of the scapular blade with two divergent crests; anterior surface of proximal humerus with paired muscle scars; combined bulges on the deltopectoral area of the humerus; ischium with well-developed and sharp ridge projecting from the ischial tuberosity to the distal blade). Several diagnostic characters of this species correspond to osteological correlates associated to appendicular musculature (e.g., Mm. deltoideus scapularis, deltoideus clavicularis, and teres major; M. coracobrachialis; Mm. supracoracoideus/deltoideus clavicularis and latissimus dorsi; Mm. flexor tibialis 3 and adductor femoris 2), which we discuss in the context of sauropod evolution. In the light of a modification of the scaling equation previously proposed and adjusting the long bone circumference for the humeri of Patagotitan, a new body mass estimate of this species ranges between 42–71 tons, with a mean value of 57 tons. Although considerably less than the value obtained by the original linear equation, the corrected quadratic equation used here provides a mean body mass estimate that is more consistent with those derived from volumetric reconstructions of Patagotitan.
Palabras clave: FORELIMB , HINDLIMB , EVOLUTION , LOGNKOSAURIA
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/207331
URL: https://www.tandfonline.com/doi/full/10.1080/02724634.2020.1793158
DOI: http://dx.doi.org/10.1080/02724634.2020.1793158
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Otero, Alejandro; Carballido, José Luis; Pérez Moreno, Agustín; The appendicular osteology of Patagotitanmayorum (Dinosauria, Sauropoda); Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 40; 4; 9-2020; 1-20
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