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dc.contributor.author
Milne, Nick
dc.contributor.author
Toledo, Néstor
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dc.contributor.author
Vizcaíno, Sergio Fabián
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dc.date.available
2023-04-11T14:22:55Z
dc.date.issued
2012-09
dc.identifier.citation
Milne, Nick; Toledo, Néstor; Vizcaíno, Sergio Fabián; Allometric and group differences in the xenarthran femur; Springer; Journal of Mammalian Evolution; 19; 3; 9-2012; 199-208
dc.identifier.issn
1064-7554
dc.identifier.uri
http://hdl.handle.net/11336/193251
dc.description.abstract
The aim of this study is to analyze shape variation in the xenarthran femur to gain insights into their behavior and locomotion. Specimens of both Cingulata (armadillos and glyptodonts) and Pilosa (anteaters and sloths) were studied and within each group body mass varies by several orders of magnitude. The main focus of the analysis was allometric variation in femoral shape in the three groups studied, armadillos, glyptodonts, and pilosans. Three dimensional coordinates were recorded for 40 homologous landmarks on each of 51 xenarthran femurs. The data were analyzed by geometric morphometric methods, and form space analysis was used to identify the allometric variation in each of the three groups. Across all groups, larger specimens tended to have larger articular surfaces, more robust femora generally, and the shape of the femoral condyles was more suited to extended postures. In addition, in larger specimens the medial condyle was much larger than the lateral condyle and the third trochanter was located more distally. The larger armadillo femora had a greater trochanter located considerably proximal to the femoral head and this is thought to improve femoral extension, but in glyptodonts and pilosans the larger specimens had a greater trochanter that was far lateral to the femoral head and this is interpreted as enhancing femoral rotation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ALLOMETRY
dc.subject
FEMUR
dc.subject
GEOMETRIC MORPHOMETRICS
dc.subject
XENARTHRAN
dc.subject.classification
Biología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Allometric and group differences in the xenarthran femur
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-03-29T17:28:31Z
dc.journal.volume
19
dc.journal.number
3
dc.journal.pagination
199-208
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Milne, Nick. University of Western Australia; Australia
dc.description.fil
Fil: Toledo, Néstor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
dc.description.fil
Fil: Vizcaíno, Sergio Fabián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina
dc.journal.title
Journal of Mammalian Evolution
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10914-011-9171-0
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10914-011-9171-0
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