CECOAL   02625
CENTRO DE ECOLOGIA APLICADA DEL LITORAL
Unidad Ejecutora - UE
artículos
Título:
Análisis faunístico de vertebrados de las toscas del Ríode La Plata (Buenos Aires, Argentina): un yacimiento paleontológico en desaparición
Autor/es:
SOIBELZON, E.; GASPARINI, G. M.; ZURITA, A. E; SOIBELZON, L
Revista:
Revista del Museo Argentino de Ciencias Naturales
Editorial:
Museo Argentino de Ciencias Naturales
Referencias:
Lugar: Buenos Aires; Año: 2008 p. 291 - 308
ISSN:
1514-5158
Resumen:
At the coast of Rio de La Plata in Buenos Aires city lies a classic paleontological site, known as “toscas del Río de La Plata” or simple as “las toscas”. It has been studied for over 120 years and, although it has been widely spread, today is only possible to observe it during low tide. For this reason, most of the materials available are those collected during the first half of the twentieth century, and that so far have only been incorporated into scarce works taxonomic review. Among the fossils collected in “las toscas” highlights Glyptodon munizi Ameghino, Neosclerocalyptus pseudornatus Ameghino, Mesotherium cristatum Serrés, Arctotherium angustidens Gervais y Ameghino and Theriodictis platensis (Mercerat); all exclusive species from the Ensenadan Stage (early to middle Pleistocene). The sediments of “las toscas” were deposited during times of normal polarity, more precisely during the event “Jaramillo” (Chron C1r1n, ca. de 1 Ma). Faunistic evidence (e.g. Tolypeutes, Catagonus) allow to interpret “las toscas” as an open environment with dry conditions and probably colder than the present.