Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund & 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 parsimony phylogenetic analyses and new comparative morphological descriptions. For this work was analyzed unpublished mater...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Jiménez Lara, Kevin Adolfo
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2019
Materias:
Ciencias Naturales
Monophyly
Genus
Paraphyly
Geography
Cingulata
Holmesina
Pampatheriidae
Clade
Sister group
Evolutionary biology
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124707
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124707
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Monophyly
Genus
Paraphyly
Geography
Cingulata
Holmesina
Pampatheriidae
Clade
Sister group
Evolutionary biology
spellingShingle Ciencias Naturales
Monophyly
Genus
Paraphyly
Geography
Cingulata
Holmesina
Pampatheriidae
Clade
Sister group
Evolutionary biology
Jiménez Lara, Kevin Adolfo
Systematic revision and redefinition of the genus <i>Scirrotherium</i> Edmund & 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
Monophyly
Genus
Paraphyly
Geography
Cingulata
Holmesina
Pampatheriidae
Clade
Sister group
Evolutionary biology
description The intrageneric relationships of the pampatheriid genus Scirrotherium and its affinities with supposedly related genera, i.e. Kraglievichia and Holmesina, are revised through parsimony phylogenetic analyses and new comparative morphological descriptions. For this work was analyzed unpublished material of pampatheriids (numerous osteoderms, one partial skull and a few postcranial bones) from Neogene formations of Colombia. 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, then it is proposed the new name K. carinatum comb. nov. The relationships between 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 from diagnostic evidence. New emended diagnoses for Scirrotherium, S. hondaensis and Kraglievichia are provided. The genus Holmesina was found monophyletic and located as the sister clade of Scirrotherium + Kraglievichia. The evolutionary and biogeographical implications of the new phylogeny and taxonomical re-arrangements are discussed. It is claimed a possible geographical origin of the family Pampatheriidae and Scirrotherium in low latitudes of South America as early as Early Miocene (Burdigalian) times. The South American ancestor or sister taxon of Holmesina is predicted as morphologically more similar to Scirrotherium than to Kraglievichia.
format Articulo
Preprint
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 & 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 & 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 & 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 & 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 & 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 & theodor, 1997 (cingulata, pampatheriidae): implications for the origin of pampatheriids and the evolution of the south american lineage including <i>holmesina</i>
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/124707
work_keys_str_mv AT jimenezlarakevinadolfo systematicrevisionandredefinitionofthegenusiscirrotheriumiedmundtheodor1997cingulatapampatheriidaeimplicationsfortheoriginofpampatheriidsandtheevolutionofthesouthamericanlineageincludingiholmesinai
bdutipo_str Repositorios
_version_ 1764820451014475778

Ejemplares similares