INVESTIGADORES
CARLINI Alfredo Armando
artículos
Título:
A new species of Dasypodidae (Xenarthra: Cingulata) from the late Miocene of northwestern South America: implications in the Dasypodini phylogeny and diversity
Autor/es:
CARLINI A.A.; CASTRO, MC; MADDEN, R.H.; SCILLATO YANÉ, G
Revista:
Historical Biology
Editorial:
Taylor and Francis
Referencias:
Lugar: London; Año: 2013 p. 1 - 10
ISSN:
0891-2963
Resumen:
A new species of dasypodid armadillo (Xenarthra, Cingulata), Anadasypus aequatorianus, from the late Miocene of
Ecuador is described. The remains were collected in sediments of the Letrero Formation, Nabo´n Basin, which is part of
several intermontane basins related to Andean uplift. The genus represents the oldest record of Dasypodini, which also
encompasses Propraopus (Pleistocene?early Holocene) and Dasypus (?Miocene?Recent). The new species is based on
several osteoderms, which show more derived features than Anadasypus hondanus, from the middle Miocene of Colombia.
In order to test the affinities of A. aequatorianus within Dasypodini, we conducted a cladistic analysis of 24 morphological
characters for 10 taxa. The most parsimonious tree supports the generic attribution of the new species and places Anadasypus
basal to Propraopus and Dasypus, agreeing with the stratigraphic evidence. The faunas from tropical Andean areas differ
noticeably from the better-known assemblages of the classic South American sequences. In the case of dasypodines, their
geochronological distribution shows that they were historically restricted to tropical and subtropical environments and the
main cladogenetic events of the group probably occurred at lower latitudes. In this context, the taxon described herein fills
important temporal and geographic gaps of early Neogene armadillos from intertropical areas.