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|This page is a part of New Pleistocene, a collaborative project detailing the fauna of the next glacial period.|
South Americas, like the rest of the world has significantly dried due to the expansion of the polar icecaps. Much of South America is grassland and desert. In the Amazon basin, the extensive rainforests are now reduced to a few tiny pockets, surrounded by extensive areas of tall grass savannah with scattered trees. Though these rainforests are rather limited, they still manage to be filled with biodiversity and thrive.
The Amazon grassland lies at the tip of what was once South America. Rainfall is low, and the Amazon river has dwindled.In these dry conditions there are frequent bushfires, triggered by lightning or the Sun. The fires cover huge areas at great speed. Grasses rapidly recover from these fires; slow-growing trees are few.
- An animal that is a relic across the Amazonian grassland is the giant anteater, Myrmecophaga tridactyla. Though xenarthans have taken a decent hit over the millions of years, they still manage to survive in the Americas. One secret to the giant anteater's success is its diet, anteaters feed on termites. Termites are rich in protein, very renewable and above all else adaptable.
- The jaguar, Panthera onca onca, is a large pantherine cat native to South and North America. It has adapted relatively well from the transition from rainforest to grassland in parts of the Amazon.
- The plains guanaco, Lama campestribus, is a lowland species that is descended from guanacos that evolved a larger size and life on the plains. It fills some of the notoungulate niches and grow to around 700kg
- The Brazilian river cattle, Bos meritium, are a larger zebu-like descendant of domestic cattle used as livestock during the Holocene. A few cattle were released or escaped During the Last World War and started a feral population. Average height is around two meters high and three meters in length.
- The maned fox, Chrysocyon vulpes is a smaller dhole-like descendant of the maned wolf. The maned wolf evolved to become smaller and faster due to the introduction of large predators. Despite this, little has changed behaviorally; they still solitary and feed on Solanum lycocarpum, commonly known as wolf apple.
- The Brazilian wolf, Canis cucumis, is a large descendant of domestic dogs that survived during the Last World War and eventually formed a new species. In height they stand about a (3ft to 4ft) and weigh an average of 190lbs.
- The Brazilian prairie dog, Cynomys brazilis, is a descendant of prairie dogs that migrated to South America during the Second American Interchange. They can be distinguished by their darker back and lighter underbelly.
- The lowland deer, Gengis amazonus, is a descendant of white-tailed deer that travels in large herds of 15 to 50 animals; they have evolved to be primary grazers and vaguely resemble axis deer.
- The American badgers, Taxidea, have migrated south and have more than tripled in size in the grasslands.
- The cougar survives, though the sole surviving species, Puma viridi, is little more than half the size of present day ones.
The Amazonian rainforest is doing relatively well in South America despite it's deduction. It houses many of the species of monkeys and birds that fled from most of what used to be Brazil and some new more interesting characters. Though the rainforest hasn't been changed that much due to the ice age, the introduction of much megafauna has.