Forests of ferns ... All this water gave the previously hot and dry climate a humid and drippy subtropical feel. Dry deserts slowly took on a greener hue. Palm tree-like cycads were abundant ...

Extending from tropical latitudes (18° S) to subtropical ... Humid Chaco and Dry Chaco. The Dry Chaco, in the west and centre of Paraguay, is an area with very irregular and low-intensity rains, ...