El
Sur del Sur
The Southernmost South
Flora and Fauna
ARGENTINE BIOGEOGRAPHY
Neotropical
Region. 34 k document.
NEOTROPICAL
REGION
It corresponds
almost exactly with what is known as "Latin America", spreading
from the Sonora Desert, in the frontier between USA and Mexico, up
to the southern limit of continental South America. A narrow band at
both sides of Argentina and Chile southern Andes, as well as
Isla Grande in Tierra del Fuego and the remaining southern islands
are not encompassed by it.
The large continental mass of South Americ kept separate from the remaining
continents for several million years, which brought about the peculiar isolated
development of the biota which caracterizes it.
According to various differentiating features, the Neotropical Region
has been divided into five Domains (Caribbean, Guyanese,
Amazonian, Chaco and Patagonian-Andean), the three last
ones being within the Argentine territory.
ANTARCTIC REGION
Antarctic
Region. 18 k document.
It includes
the southern end of South America, New Zealand and Antarctica.
These three masses of land used to be linked, corresponding to the southern
part of the Gondwana supercontinent. Despite the distances which today
separate one from the other, the three members of the regions have flora and
fauna affinities.
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