SciELO - Scientific Electronic Library Online

 
vol.64 número1Los mamíferos fósiles colectados por Charles Darwin en América del Surdurante su viaje a bordo del HMS BeagleDarwin en Puente del Inca: observaciones sobre laformación de Puente del Inca y el levantamiento de las montañas índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

  • No hay articulos citadosCitado por SciELO

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Bookmark


Revista de la Asociación Geológica Argentina

versión On-line ISSN 1851-8249

Resumen

VIZCAINO, Sergio F.; FARINA, Richard A.  y  FERNICOLA, Juan Carlos. Young Darwin and the ecology and extinctionof pleistocene south american fossil mammals. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.1, pp. 160-169. ISSN 1851-8249.

Duringhis two years in South America Charles Darwin became fascinated not only withthe lush vegetation of Brazil, but also with the gigantic Pleistocene mammals that hefound in the drier areas of Uruguay, and in the pampas and Patagonian coast of Argentina. These findings includedvarious ground sloths and glyptodonts among xenarthrans, and hoofed herbivoreslike Toxodon and Macrauchenia, in addition to horses and smallrodents. He concluded that the general assumption that large animals requireluxuriant vegetation was false and that vitiated the reasoning of geologists onsome aspects of Earth's history. He also reflected on the evident changes thatoccurred in the continent, the extinct fauna of which suggested to him ananalogy to southern parts of Africa. He wondered about our ignorance of biological traits inextinct creatures and the reasons for their extinction. Thus, not only did Darwin inspire phylogeneticstudies on fossil mammal lineages, he also opened a gate to the research ontheir behaviour, physiology and extinction; i.e., their palaeobiology. Whereasthe first approach was largely developed in South America beginning about thesecond half of the 19th century due to the intellectual influence ofFlorentino Ameghino, palaeobiology became a much more recent line of work, inapparent relation to innovations in methodology and technology. Thiscontribution provides an overview of recent contributions on the palaeobiologyof Pleistocene fossil mammals of South America as attempts to provide answers for Darwin's questions.

Palabras llave : Darwin; Ecology; Extinction; South America; Mammals.

        · resumen en Español     · texto en Inglés     · pdf en Inglés