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>

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 For this work, unpublished material of pamp...

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Detalles Bibliográficos
Autor principal:	Jiménez Lara, Kevin Adolfo
Formato:	Articulo
Lenguaje:	Español
Publicado:	2020
Materias:	Ciencias Naturales Pampatheriidae Scirrotherium Kraglievichia Holmesina Great American Biotic Interchange Neogene
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/124709
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-124709
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Español
topic	Ciencias Naturales Pampatheriidae Scirrotherium Kraglievichia Holmesina Great American Biotic Interchange Neogene
spellingShingle	Ciencias Naturales Pampatheriidae Scirrotherium Kraglievichia Holmesina Great American Biotic Interchange Neogene Jiménez Lara, Kevin Adolfo 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>
topic_facet	Ciencias Naturales Pampatheriidae Scirrotherium Kraglievichia Holmesina Great American Biotic Interchange Neogene
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 For this work, unpublished material of pampatheriids (numerous osteoderms, one partial skull and a few postcranial bones) from Neogene formations of Colombia was analyzed.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.
format	Articulo Articulo
author	Jiménez Lara, Kevin Adolfo
author_facet	Jiménez Lara, Kevin Adolfo
author_sort	Jiménez Lara, Kevin Adolfo
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>
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>
publishDate	2020
url	http://sedici.unlp.edu.ar/handle/10915/124709
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bdutipo_str	Repositorios
_version_	1764820451028107265

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>

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