We have only fractional knowledge of the hunter-gatherers who emerged after the Ice Age. Therefore, in creating our ideal-typicalities we must depend largely upon data gleaned by modern anthropologists from contemporary band societies. The Pygmies of the Congo rainforest, the Negritos of the Southeast Asian rainforests, the African Bushmen of the Kalahari Desert, the Indians of the Amazon rainforest, are usually cited by anthropologists as typical examples of twentieth-century hunting-gathering bands. Also cited are the Eskimo, the Australian aborigines, and even certain Indian peoples of the American Southwest and the Canadian Northeast.