INVESTIGADORES
ZURITA Alfredo Eduardo
artículos
Título:
Los Glyptodontidae (Mammalia, Xenarthra): Historia biogeográfica y evolutiva de un grupo particular de mamíferos acorazados
Autor/es:
ZURITA, A. E; SCILLATO-YANÉ, G. J.; CIANCIO, M.R; ZAMORANO, M.; GONZALEZ-RUIZ, L.
Revista:
Revista del Museo Argentino de Ciencias Naturales n.s.
Editorial:
Museo Argentino de Ciencias Naturales
Referencias:
Lugar: Buenos Aires; Año: 2016 p. 249 - 262
Resumen:
Glyptodontidae (Mammalia, Xenarthra): biogeographic and phylogeneticaspects of a particular group of armored mammals. Xenarthra Glyptodontidaeconstitutes one of the most successful clade in South America, becoming extinct in the early Holocene. During its extensive evolutionary history (late Eocene-early Holocene), two different phases are clearly recognizable. In its initial stage (late Eocene-Oligocene), all the records are restricted to southern South America, from the Patagonian region in Argentina to Bolivia. In this period its diversity was limited to the subfamilies Glypatelinae and Propalaehoplophorinae,which are only known on the basis of osteoderms of the dorsal carapace. A second phase including the Neogene and Quaternary periods is characterized by a progressive and evident taxonomic diversification, reaching also an important latitudinal distribution. Along the phylogenetic history of Glyptodontidae, southern South America included the largest taxonomic diversification when compared to northern areas (where the only certain records belong to thesubfamily Glyptodontinae). In this scenario, it seem possible that the ?Pebas mega-wetland system? had played a central role during middle Miocene isolating both the southern and northern populations of glyptodonts and stimulating independent phylogenetic process.