The term "Genus Zinjanthropus" refers to a now defunct genus of hominids, originally discovered in East Africa in the early twentieth century. While the genus has since been subsumed into the broader category of Australopithecus, which encompasses other early hominid species, it remains an important marker of human evolutionary history. Synonyms for Genus Zinjanthropus include Australopithecus boisei and Paranthropus boisei, both of which are closely related to the original discovery and represent an important part of our understanding of human evolution from primates to Homo sapiens. Through research and analysis of these closely related hominids, we can continue to paint a more complete picture of our origins as a species.