The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications

Autores
Haro, Jose Augusto; Tauber, Adan Alejo; Krapovickas, Jerónimo Matías
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The first nearly complete and articulated manual material of the ground sloth Mylodon darwinii, found in Upper Pleistocene strata from Argentina, is reported here. It shares cuneiform similarities with Mylodonopsis ibseni from Brazil, including pisiform facet distinct, facet for ulna obliquely concave, and prominent distolateral process, as well as metacarpal III gracile. It shares a flattened pisiform with Glossotherium robustum. The trapezoid is unique in the obliquely elongate proportions of its dorsal surface. The lack of fusion of epiphyses in metacarpals, as well as the scarce development of muscular attachment scars indicates a subadult ontogenetic stage. Shapes of the articular facets indicate different functions in digits II and III, with the former having greater motion range and the latter greater stability at the joints. Clear arboreal and fossorial adaptations are absent. A phylogenetic analysis was conducted; it recovers M. darwinii as closely related to M. ibseni. The analysis mainly agrees with larger phylogenetic analyses of sloth relationships based on craniomandibular evidence, except in the position of Thinobadistes segnis. When both data sets are analyzed together, the recovered position is that of the larger craniomandibular analysis. Our data of hand structure supports more than two events of mylodontine dispersal to North America.
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
Fil: Tauber, Adan Alejo. 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
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
Materia
Mylodon
Hand
Osteology
Pleistocene
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/179728
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implicationsHaro, Jose AugustoTauber, Adan AlejoKrapovickas, Jerónimo MatíasMylodonHandOsteologyPleistocenehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The first nearly complete and articulated manual material of the ground sloth Mylodon darwinii, found in Upper Pleistocene strata from Argentina, is reported here. It shares cuneiform similarities with Mylodonopsis ibseni from Brazil, including pisiform facet distinct, facet for ulna obliquely concave, and prominent distolateral process, as well as metacarpal III gracile. It shares a flattened pisiform with Glossotherium robustum. The trapezoid is unique in the obliquely elongate proportions of its dorsal surface. The lack of fusion of epiphyses in metacarpals, as well as the scarce development of muscular attachment scars indicates a subadult ontogenetic stage. Shapes of the articular facets indicate different functions in digits II and III, with the former having greater motion range and the latter greater stability at the joints. Clear arboreal and fossorial adaptations are absent. A phylogenetic analysis was conducted; it recovers M. darwinii as closely related to M. ibseni. The analysis mainly agrees with larger phylogenetic analyses of sloth relationships based on craniomandibular evidence, except in the position of Thinobadistes segnis. When both data sets are analyzed together, the recovered position is that of the larger craniomandibular analysis. Our data of hand structure supports more than two events of mylodontine dispersal to North America.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; ArgentinaFil: Tauber, Adan Alejo. 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; ArgentinaFil: 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; ArgentinaSociety of Vertebrate Paleontology2016-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/179728Haro, Jose Augusto; Tauber, Adan Alejo; Krapovickas, Jerónimo Matías; The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 36; 5; 3-2016; 1-520272-4634CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/full/10.1080/02724634.2016.1188824#abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1080/02724634.2016.1188824info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:46:00Zoai:ri.conicet.gov.ar:11336/179728instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:46:00.878CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
title The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
spellingShingle The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
Haro, Jose Augusto
Mylodon
Hand
Osteology
Pleistocene
title_short The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
title_full The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
title_fullStr The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
title_full_unstemmed The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
title_sort The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications
dc.creator.none.fl_str_mv Haro, Jose Augusto
Tauber, Adan Alejo
Krapovickas, Jerónimo Matías
author Haro, Jose Augusto
author_facet Haro, Jose Augusto
Tauber, Adan Alejo
Krapovickas, Jerónimo Matías
author_role author
author2 Tauber, Adan Alejo
Krapovickas, Jerónimo Matías
author2_role author
author
dc.subject.none.fl_str_mv Mylodon
Hand
Osteology
Pleistocene
topic Mylodon
Hand
Osteology
Pleistocene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The first nearly complete and articulated manual material of the ground sloth Mylodon darwinii, found in Upper Pleistocene strata from Argentina, is reported here. It shares cuneiform similarities with Mylodonopsis ibseni from Brazil, including pisiform facet distinct, facet for ulna obliquely concave, and prominent distolateral process, as well as metacarpal III gracile. It shares a flattened pisiform with Glossotherium robustum. The trapezoid is unique in the obliquely elongate proportions of its dorsal surface. The lack of fusion of epiphyses in metacarpals, as well as the scarce development of muscular attachment scars indicates a subadult ontogenetic stage. Shapes of the articular facets indicate different functions in digits II and III, with the former having greater motion range and the latter greater stability at the joints. Clear arboreal and fossorial adaptations are absent. A phylogenetic analysis was conducted; it recovers M. darwinii as closely related to M. ibseni. The analysis mainly agrees with larger phylogenetic analyses of sloth relationships based on craniomandibular evidence, except in the position of Thinobadistes segnis. When both data sets are analyzed together, the recovered position is that of the larger craniomandibular analysis. Our data of hand structure supports more than two events of mylodontine dispersal to North America.
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
Fil: Tauber, Adan Alejo. 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
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
description The first nearly complete and articulated manual material of the ground sloth Mylodon darwinii, found in Upper Pleistocene strata from Argentina, is reported here. It shares cuneiform similarities with Mylodonopsis ibseni from Brazil, including pisiform facet distinct, facet for ulna obliquely concave, and prominent distolateral process, as well as metacarpal III gracile. It shares a flattened pisiform with Glossotherium robustum. The trapezoid is unique in the obliquely elongate proportions of its dorsal surface. The lack of fusion of epiphyses in metacarpals, as well as the scarce development of muscular attachment scars indicates a subadult ontogenetic stage. Shapes of the articular facets indicate different functions in digits II and III, with the former having greater motion range and the latter greater stability at the joints. Clear arboreal and fossorial adaptations are absent. A phylogenetic analysis was conducted; it recovers M. darwinii as closely related to M. ibseni. The analysis mainly agrees with larger phylogenetic analyses of sloth relationships based on craniomandibular evidence, except in the position of Thinobadistes segnis. When both data sets are analyzed together, the recovered position is that of the larger craniomandibular analysis. Our data of hand structure supports more than two events of mylodontine dispersal to North America.
publishDate 2016
dc.date.none.fl_str_mv 2016-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/179728
Haro, Jose Augusto; Tauber, Adan Alejo; Krapovickas, Jerónimo Matías; The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 36; 5; 3-2016; 1-52
0272-4634
CONICET Digital
CONICET
url http://hdl.handle.net/11336/179728
identifier_str_mv Haro, Jose Augusto; Tauber, Adan Alejo; Krapovickas, Jerónimo Matías; The manus of mylodon darwinii Owen (Tardigrada, Mylodontidae) and its phylogenetic implications; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 36; 5; 3-2016; 1-52
0272-4634
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/full/10.1080/02724634.2016.1188824#abstract
info:eu-repo/semantics/altIdentifier/doi/10.1080/02724634.2016.1188824
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Society of Vertebrate Paleontology
publisher.none.fl_str_mv Society of Vertebrate Paleontology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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