CRETACEOUS - PALEOGENE VERTEBRATES FROM THE JAMES ROSS BASIN, ANTARCTIC PENINSULA: EVOLUTION AND BIOGEOGRAPHY

Using onshore sections of Cretaceous and Paleogene sedimentary rocks, we will try to document the paleobiogeographical and temporal extent of the land bridge that once connected the northern tip of the Antarctic Peninsula with southernmost South America.

Comparison of data gathered from these two neighbor basins will allow to relate tectonic processes, climate changes and faunal-floral evolution of a critical period and from a strategic place for the understanding of the paleobiogeography of Southern Continents. Our data will also constrain times of vertebrate migrations and evolution. SPANISH Las secuencias sedimentarias en la Cuenca de James Ross contiene un registro unico de vertebrados marinos y terrestres que documentan los ultimos estadios del desmembramiento del Gondwana.