IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
On the status of the giant mylodontine sloth Glossotherium wegneri (Xenarthra, Folivora) from the Late Pleistocene of Ecuador
Autor/es:
PUJOS, FRANÇOIS; TSUJI, LEONARD T.S.; DE IULIIS, GERARDO; MCAFEE, ROBERT K.; ROOK, LORENZO; BOSCAINI, ALBERTO; CARTELLE, CÁSTOR
Revista:
COMPTES RENDUS PALEVOL
Editorial:
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
Referencias:
Lugar: Paris; Año: 2020 vol. 19 p. 215 - 232
ISSN:
1631-0683
Resumen:
The late Pleistocene mylodontine sloth Glossotherium wegneri (Interandean region, Ecuador) has been assigned to Glossotherium and Oreomylodon (the latter ranked as a subgenus or genus), and synonymized with G. robustum. However, the phylogenetic and comparative analyses, including previously undescribed remains, conducted here strongly suggest specific distinction for G. wegneri and that there is little, if any, support for generic or subgeneric distinction for Oreomylodon. Among the notable features of this species are the presence of an internasal element, marked expansion of the rostrum anteriorly and dorsoventrally and the palatal region transversely, increased separation of the caniniform tooth from the anterior edge of maxilla, increased relative braincase width, relatively enlarged hypoglossal foramen, and greatly elongated zygomatic process of the squamosal. The resulting single MPT recovered a monophyletic Glossotherium, with the following phylogenetic arrangement of the species of this genus (G. robustum + ((G. wegneri + G. tropicorum) + (G. phoenesis + G. tarijense))).