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dc.contributor.author
Pujos, François Roger Francis
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dc.contributor.author
Gaudin, Timothy
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dc.contributor.author
de Iuliis, Gerardo
dc.contributor.author
Cartelle, Cástor
dc.date.available
2019-02-07T21:03:25Z
dc.date.issued
2012-09
dc.identifier.citation
Pujos, François Roger Francis; Gaudin, Timothy; de Iuliis, Gerardo; Cartelle, Cástor; Recent Advances on Variability, Morpho-Functional Adaptations, Dental Terminology, and Evolution of Sloths; Springer; Journal of Mammalian Evolution; 19; 3; 9-2012; 159-169
dc.identifier.issn
1064-7554
dc.identifier.uri
http://hdl.handle.net/11336/69736
dc.description.abstract
The occasion of the Xenarthra Symposium during the ICVM 9 meeting allowed us to reflect on the considerable advances in the knowledge of sloths made by the "X-community" over the past two decades, particularly in such aspects as locomotion, mastication, diet, dental terminology, intraspecific variation, sexual dimorphism, and phylogenetic relationships. These advancements have largely been made possible by the application of cladistic methodology (including DNA analyses) and the discovery of peculiar forms such as Diabolotherium, Thalassocnus, and Pseudoglyptodon in traditionally neglected areas such as the Chilean Andes and the Peruvian Pacific desert coast. Modern tree sloths exhibit an upside-down posture and suspensory locomotion, but the habits of fossil sloths are considerably more diverse and include locomotory modes such as inferred bipedality, quadrupedality, arboreality or semiarboreality, climbing, and an aquatic or semi-aquatic lifestyle in saltwater. Modern tree sloths are generalist browsers, but fossil sloths had browsing, grazing, or mixed feeding dietary habits. Discovery of two important sloth faunas in Brazil (Jacobina) and southern North America (Daytona Beach and Rancho La Brea) have permitted evaluation of the ontogenetic variation in Eremotherium laurillardi and the existence of possible sexual dimorphism in this sloth and in Paramylodon harlani. A new dental terminology applicable to a majority of clades has been developed, facilitating comparisons among taxa. An analysis wherein functional traits were plotted onto a phylogeny of sloths was used to determine patterns of evolutionary change across the clade. These analyses suggest that megatherioid sloths were primitively semiarboreal or possessed climbing adaptations, a feature retained in some members of the family Megalonychidae. Pedolateral stance in the hindfoot is shown to be convergently acquired in Mylodontidae and Megatheria (Nothrotheriidae + Megatheriidae), this feature serving as a synapomorphy of the latter clade. Digging adaptations can only be securely ascribed to scelidotheriine and mylodontine sloths, and the latter are also the only group of grazing sloths, the remainder being general browsers. © 2012 Springer Science+Business Media, LLC.
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
Dental Terminology
dc.subject
Locomotion
dc.subject
Morpho-Functional Adaptations
dc.subject
Phylogeny
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Sexual Dimorphism
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Sloths
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Recent Advances on Variability, Morpho-Functional Adaptations, Dental Terminology, and Evolution of Sloths
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-02-06T17:38:32Z
dc.journal.volume
19
dc.journal.number
3
dc.journal.pagination
159-169
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Pujos, François Roger Francis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Institut Français d’Etudes Andines; Perú
dc.description.fil
Fil: Gaudin, Timothy. University of Tennessee at Chattanooga; Estados Unidos
dc.description.fil
Fil: de Iuliis, Gerardo. University of Toronto; Canadá
dc.description.fil
Fil: Cartelle, Cástor. PUC Minas; Brasil
dc.journal.title
Journal of Mammalian Evolution
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1007/s10914-012-9189-y
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s10914-012-9189-y
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