The brown spider monkey or variegated spider monkey (Ateles hybridus) is a critically endangered species of spider monkey, a type of New World monkey, from forests in northern Colombia and northwestern Venezuela
Endangered golden-headed lion tamarin babies and their mother. Golden-Headed Lion Tamarin "Severely endangered because of habitat loss and illegal capture. There are only about 200 golden-headed lion tamarins in the wild.
Reconstructing the New World monkey family tree: After landing in Americas, primates spread as far as Caribbean, Patagonia
"Reconstructing the New World Monkey Family Tree: After Landing in Americas, Primates Spread as Far as Caribbean, Patagonia..."We know from molecular studies that the monkeys have their closest relatives in Africa and Asia -- but that doesn't explain how they got to South America, just that they did,"
Southern Muriqui - Brachyteles arachnoides - Endemic to Brazil in the states of Paraná, São Paulo, Rio de Janeiro, Espírito Santo and Minas Gerais, this muriqui (Woolly spider monkey), is of the family Atelidae. Its head and body measure 22-31" (55-78 cm) long and its tail is 29-32" (74-80 cm) long. It is the largest New World monkey and the largest non-human primate in the Americas