Hyperdolichocephaly is characterised by the skull width reaching less than 71 percent of the skull breadth. It was found in some early humans, but is rare today on the population level. The largest area of hyperdolichocephalic dominance is found from Central Australia to North Australia (esp. Arnhem Land, Tiwi Islands). It dominates in some Nilotes (Nuer, Shilluk) and sporadically appears in North Africa (e.g. in Siwans). It has been found to dominate in the Chenchu of India, other Indian populations only reach hyperdolichocephaly on the individual level. In America it occurs in some western Inuit, some Lagids (U'wa, Tapuya), and was present in a very pronounced form in the extinct Pericú of Baja California.