Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the ev...

Autores
Jiménez Lara, Kevin Adolfo
Año de publicación
2020
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The intrageneric relationships of the pampatheriid genus Scirrotherium and its affinities with supposedly related genera, i.e., Kraglievichia and Holmesina, are revised through new comparative morphological descriptions and parsimony phylogenetic analyses. For this work, unpublished material of pampatheriids (numerous osteoderms, one partial skull and a few postcranial bones) from Neogene formations of Colombia was analyzed. The results show that Scirrotherium is paraphyletic if we include all its referred species, i.e., Scirrotherium hondaensis, S. carinatum and S. antelucanus. The species S. carinatum is closer to Kraglievichia paranensis than to S. hondaensis or S. antelucanus, therefore the new name K. carinatum nov. comb. is proposed. The relationship among S. hondaensis and S. antelucanus could not be resolved, so these species should be designated in aphyly. In spite of failing to recover S. hondaensis and S. antelucanus as one single clade, here is preferred to maintain the generic name Scirrotherium in both species based on diagnostic evidence. New emended diagnoses for Scirrotherium, S. hondaensis and Kraglievichia are provided. The genus Holmesina was found to be monophyletic and positioned as the sister clade of Scirrotherium + Kraglievichia. The evolutionary and biogeographic implications of the taxonomic re-arrangements and the new phylogeny are discussed. A possible geographic origin of the family Pampatheriidae and Scirrotherium in low latitudes of South America as early as Early Miocene times is claimed. The immediate South American sister taxon of Holmesina is predicted to be morphologically more similar to Scirrotherium than to Kraglievichia.
Facultad de Ciencias Naturales y Museo
Consejo Nacional de Investigaciones Científicas y Técnicas
Materia
Ciencias Naturales
Pampatheriidae
Scirrotherium
Kraglievichia
Holmesina
Great American Biotic Interchange
Neogene
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/124709
Acceder
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spelling Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>Jiménez Lara, Kevin AdolfoCiencias NaturalesPampatheriidaeScirrotheriumKraglievichiaHolmesinaGreat American Biotic InterchangeNeogeneThe intrageneric relationships of the pampatheriid genus Scirrotherium and its affinities with supposedly related genera, i.e., Kraglievichia and Holmesina, are revised through new comparative morphological descriptions and parsimony phylogenetic analyses. For this work, unpublished material of pampatheriids (numerous osteoderms, one partial skull and a few postcranial bones) from Neogene formations of Colombia was analyzed. The results show that Scirrotherium is paraphyletic if we include all its referred species, i.e., Scirrotherium hondaensis, S. carinatum and S. antelucanus. The species S. carinatum is closer to Kraglievichia paranensis than to S. hondaensis or S. antelucanus, therefore the new name K. carinatum nov. comb. is proposed. The relationship among S. hondaensis and S. antelucanus could not be resolved, so these species should be designated in aphyly. In spite of failing to recover S. hondaensis and S. antelucanus as one single clade, here is preferred to maintain the generic name Scirrotherium in both species based on diagnostic evidence. New emended diagnoses for Scirrotherium, S. hondaensis and Kraglievichia are provided. The genus Holmesina was found to be monophyletic and positioned as the sister clade of Scirrotherium + Kraglievichia. The evolutionary and biogeographic implications of the taxonomic re-arrangements and the new phylogeny are discussed. A possible geographic origin of the family Pampatheriidae and Scirrotherium in low latitudes of South America as early as Early Miocene times is claimed. The immediate South American sister taxon of Holmesina is predicted to be morphologically more similar to Scirrotherium than to Kraglievichia.Facultad de Ciencias Naturales y MuseoConsejo Nacional de Investigaciones Científicas y Técnicas2020-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-21http://sedici.unlp.edu.ar/handle/10915/124709spainfo:eu-repo/semantics/altIdentifier/issn/0016-6995info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geobios.2020.07.002info:eu-repo/semantics/reference/hdl/10915/124707info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:21:52Zoai:sedici.unlp.edu.ar:10915/124709Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:21:52.649SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
title Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
spellingShingle Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
Jiménez Lara, Kevin Adolfo
Ciencias Naturales
Pampatheriidae
Scirrotherium
Kraglievichia
Holmesina
Great American Biotic Interchange
Neogene
title_short Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
title_full Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
title_fullStr Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
title_full_unstemmed Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
title_sort Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund and Theodor, 1997 (Cingulata, Pampatheriidae): Implications for the origin of pampatheriids and the evolution of the South American lineage including <i>Holmesina</i>
dc.creator.none.fl_str_mv Jiménez Lara, Kevin Adolfo
author Jiménez Lara, Kevin Adolfo
author_facet Jiménez Lara, Kevin Adolfo
author_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Pampatheriidae
Scirrotherium
Kraglievichia
Holmesina
Great American Biotic Interchange
Neogene
topic Ciencias Naturales
Pampatheriidae
Scirrotherium
Kraglievichia
Holmesina
Great American Biotic Interchange
Neogene
dc.description.none.fl_txt_mv The intrageneric relationships of the pampatheriid genus Scirrotherium and its affinities with supposedly related genera, i.e., Kraglievichia and Holmesina, are revised through new comparative morphological descriptions and parsimony phylogenetic analyses. For this work, unpublished material of pampatheriids (numerous osteoderms, one partial skull and a few postcranial bones) from Neogene formations of Colombia was analyzed. The results show that Scirrotherium is paraphyletic if we include all its referred species, i.e., Scirrotherium hondaensis, S. carinatum and S. antelucanus. The species S. carinatum is closer to Kraglievichia paranensis than to S. hondaensis or S. antelucanus, therefore the new name K. carinatum nov. comb. is proposed. The relationship among S. hondaensis and S. antelucanus could not be resolved, so these species should be designated in aphyly. In spite of failing to recover S. hondaensis and S. antelucanus as one single clade, here is preferred to maintain the generic name Scirrotherium in both species based on diagnostic evidence. New emended diagnoses for Scirrotherium, S. hondaensis and Kraglievichia are provided. The genus Holmesina was found to be monophyletic and positioned as the sister clade of Scirrotherium + Kraglievichia. The evolutionary and biogeographic implications of the taxonomic re-arrangements and the new phylogeny are discussed. A possible geographic origin of the family Pampatheriidae and Scirrotherium in low latitudes of South America as early as Early Miocene times is claimed. The immediate South American sister taxon of Holmesina is predicted to be morphologically more similar to Scirrotherium than to Kraglievichia.
Facultad de Ciencias Naturales y Museo
Consejo Nacional de Investigaciones Científicas y Técnicas
description The intrageneric relationships of the pampatheriid genus Scirrotherium and its affinities with supposedly related genera, i.e., Kraglievichia and Holmesina, are revised through new comparative morphological descriptions and parsimony phylogenetic analyses. For this work, unpublished material of pampatheriids (numerous osteoderms, one partial skull and a few postcranial bones) from Neogene formations of Colombia was analyzed. The results show that Scirrotherium is paraphyletic if we include all its referred species, i.e., Scirrotherium hondaensis, S. carinatum and S. antelucanus. The species S. carinatum is closer to Kraglievichia paranensis than to S. hondaensis or S. antelucanus, therefore the new name K. carinatum nov. comb. is proposed. The relationship among S. hondaensis and S. antelucanus could not be resolved, so these species should be designated in aphyly. In spite of failing to recover S. hondaensis and S. antelucanus as one single clade, here is preferred to maintain the generic name Scirrotherium in both species based on diagnostic evidence. New emended diagnoses for Scirrotherium, S. hondaensis and Kraglievichia are provided. The genus Holmesina was found to be monophyletic and positioned as the sister clade of Scirrotherium + Kraglievichia. The evolutionary and biogeographic implications of the taxonomic re-arrangements and the new phylogeny are discussed. A possible geographic origin of the family Pampatheriidae and Scirrotherium in low latitudes of South America as early as Early Miocene times is claimed. The immediate South American sister taxon of Holmesina is predicted to be morphologically more similar to Scirrotherium than to Kraglievichia.
publishDate 2020
dc.date.none.fl_str_mv 2020-10
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info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geobios.2020.07.002
info:eu-repo/semantics/reference/hdl/10915/124707
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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eu_rights_str_mv openAccess
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