INVESTIGADORES
CARLINI Alfredo Armando
artículos
Título:
Galea (Rodentia, Caviidae) in the late Pleistocene of Corrientes Province (Argentina): taxonomic and paleobiogeographic implications
Autor/es:
FRANCIA A.; CARLINI A.A.; ZURITA, A.E; VERZI D.
Revista:
NEUES JAHRBUCH FUR GEOLOGIE UND PALAONTOLOGIE-ABHANDLUNGEN
Editorial:
E SCHWEIZERBARTSCHE VERLAGS
Referencias:
Lugar: Stuttgart; Año: 2012 vol. 266 p. 173 - 184
ISSN:
0077-7749
Resumen:
Abstract: The Caviidae (Rodentia) are taxonomically diverse caviomorphs. Their fossil record is
abundant and their oldest representatives date back to the middle/late Miocene. The genus Galea
MEyEn includes small-sized species, exclusively distributed in South America. In this work we describe
new remains of Galea (Rodentia, Caviidae) from the Toropí Formation (late Pleistocene, ca. 52
ka) of Corrientes Province, Argentina, and discuss the paleobiogeography of late Pleistocene species.
The remains consist of a partial maxillary with complete P4-M3 dental series, anterior portion of the
zygomatic arches, one associated left upper incisor, and one isolated left P4. Anatomical differences
in relation to the remaining recognized species, differences in temporal and latitudinal distribution,
as well as in the taxonomic composition of faunas associated to extinct species of Galea, suggest
that it corresponds to a new species related to Galea tixiensis. The presence of this taxon in the late
Pleistocene sediments of Corrientes Province represents a new element to characterize the complex
biological dynamics of this region during much of the Pleistocene; in this area, intertropical elements
co-occurred with typical Pampean-Patagonian taxa, and conditions could have eventually promoted
differentiation of endemic species.