The fossil was published in "Nature" on 15 August 1959, but due to a strike of the printers the issue was not released until September. In it Louis placed the fossil in Broom's Australopithecinae family, creating a new genus for it, "Zinjanthropus", species "boisei". "Zinj" is an ancient Arabic word for the coast of East Africa and "boisei" referred to Charles Boise, an anthropological benefactor of the Leakeys. Louis based his classification on twenty differences from Australopithecus.