Chamaecranic skulls are characterised by the skull height reaching less than 70 percent of the skull length. This is also called low-skulled. Many early humans, including Neanderthals, were chamaecranic. Today true chamaecrany is rare, but occurs on all continents. In Africa it is most common in Khoisan groups, but also appears in some Berbers, in Europe it appears in some coastal regions of Western Europe. Much of Siberia is chamaecranic, as well as parts of Arabia. It also exists in some populations of Southern Australian Aborigines. In America chamaecrany is comparatively rare, but quite typical for various Fuegids, particularly in Botocudos. In North America it shows in some groups of the Great Plains.