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dc.contributor.author
Haro, Jose Augusto  
dc.contributor.author
Tauber, Adan Alejo  
dc.contributor.author
Krapovickas, Jerónimo Matías  
dc.date.available
2019-04-17T18:25:11Z  
dc.date.issued
2017-09  
dc.identifier.citation
Haro, Jose Augusto; Tauber, Adan Alejo; Krapovickas, Jerónimo Matías; Thoracic member (pectoral girdle and forelimb) bones of Mylodon darwinii Owen (Xenarthra, Mylodontidae) from the Late Pleistocene of Central Argentina and their phylogenetic implications; Springer Heidelberg; Palaeontologische Zeitschrift; 91; 3; 9-2017; 439-457  
dc.identifier.issn
0031-0220  
dc.identifier.uri
http://hdl.handle.net/11336/74596  
dc.description.abstract
A nearly complete skeleton, including most of the thoracic member bones of the sloth Mylodon darwinii, have been found in Upper Pleistocene strata from Anisacate River, Argentina. The thoracic member bones resemble their homologues in Glossotherium robustum, Paramylodon harlani, and Mylodonopsis ibseni in the following traits: (1) the olecranon is mediolaterally compressed; (2) the radius has an acute styloid process; (3) the radial diaphysis medial border is straight for two thirds of its length; (4) the radial shaft medial border forms an angle with the medial border of the styloid process. The radius presents a distinctive, mostly proximally facing articular circumference. The unfused epiphyses and feeble muscle attachment ridges indicate a sub-adult ontogenetic stage. Deviation of the olecranon and weak M. teres major origin and insertion, suggest a low fossorial specialization. The structure of the thoracic limb bones does not support climbing habits, because pronation-related features are reduced and the humeral head is not prominent. The structure of the radius suggests graviportal adaptations: the proximal head is mediolaterally expanded and the diaphysis straight. A phylogenetic analysis adding thoracic member characters recovers M. darwinii as part of a clade that includes Glossotherium robustum and Paramylodon harlani, but excludes Lestodon armatus. This contrasts with the results of previous analyses focusing on the head skeleton, highlighting the relevance of sampling postcranial characters in phylogenetic analyses of mylodontine sloths.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Springer Heidelberg  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Late Pleistocene  
dc.subject
Mylodon Darwinii  
dc.subject
Mylodontinae  
dc.subject
Osteology  
dc.subject
Phylogeny  
dc.subject.classification
Paleontología  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Thoracic member (pectoral girdle and forelimb) bones of Mylodon darwinii Owen (Xenarthra, Mylodontidae) from the Late Pleistocene of Central Argentina and their phylogenetic implications  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-04-16T20:40:24Z  
dc.identifier.eissn
1867-6812  
dc.journal.volume
91  
dc.journal.number
3  
dc.journal.pagination
439-457  
dc.journal.pais
Alemania  
dc.journal.ciudad
Heidelberg  
dc.description.fil
Fil: Haro, Jose Augusto. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Departamento de Geología Basica y Aplicada. Cátedra de Paleontología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina  
dc.description.fil
Fil: Tauber, Adan Alejo. Universidad Nacional de Córdoba; Argentina. Museo Provincial de Ciencias Naturales Dr. Arturo Umberto Illía; Argentina  
dc.description.fil
Fil: Krapovickas, Jerónimo Matías. Universidad Nacional de Córdoba. Facultad de Cs.exactas Físicas y Naturales. Departamento de Geología Basica y Aplicada. Cátedra de Paleontología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina  
dc.journal.title
Palaeontologische Zeitschrift  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s12542-017-0350-z  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s12542-017-0350-z