Southern Cone Mesopotamian savanna

The Southern Cone Mesopotamian savanna, also known as the Argentine Mesopotamian grasslands, is a flooded grassland ecoregion of Argentina.

The ecoregion covers an area of 77,600 square kilometres (30,000 sq mi), lying west of the Uruguay River in Argentina's Corrientes Province, extending north and south into adjacent portions of Missiones and Entre Ríos provinces.

The ecoregion is covered by a mosaic of seasonally wet habitats, including grasslands, marshes, woodland, and gallery forests.

The Mesopotamian savanna is an endemic bird area, with three endemic species, two of which are threatened.

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