Patagonian Shelf (250 to 450 km wide) where the seabed slopes gently to 200 m isobath. Apart from the Falklands Plateau (which lies to the east of the Falkland Islands), the seabed then falls by up to to 2000 m and more. The Falklands Trough separates the Patagonian Shelf from the Scotia Arc. Patagonian Shelf The Patagonian or Argentine Shelf is part of the South American continental shelf belonging to the Argentine Sea on the Atlantic seaboard, south of about 35°S. It adjoins the coasts of Uruguay, Argentina and the Falkland Islands. Various authorities quote different dimensions of the shelf, depending on
Patagonian opossum of La Pampa and Choele Choel (northern Rio Negro Province). It is suggested that the Patagonian opossum may have emerged from the same ancestral group as "Marmosa". They resemble each other closely. In the winter both types have similarly thickening at the base of the tails, where fat accumulates. Yet they do not share all aspects of their lifestyle; Patagonian opossums have a specialized way to gather and consume food, which is made possible by the shortening of their skull and jaws. The shortening occurs in the premolar region; this gives the Patagonian opossum increased biting power. The general appearance