An early and long‐lived human species (the name means ‘upright man’) that appeared about 1.8 million years ago and survived until at least 250 000 years ago. It is the first human species found outside Africa and appears to have colonized Asia, Indonesia, and Europe around 1 million years ago. The ancestry of Homo erectus is uncertain. The species may have derived directly from the Australopithecines, but differed from them in a number of ways: Homo erectus was heavier and taller, had a more linear body form, better bipedal movement, less sexual dimorphism, and a larger brain. Homo erectus was also the first hominin to have a projecting nose. Alternatively, Homo habilis may stand on the evolutionary line between the gracile Australopithecines and Homo erectus. The stone and flint industries associated with Homo erectus are almost exclusively Acheulian. It is possible that following the dispersion of the species around the globe there were significant regional developments within the species, leading, for example, to recognizably related species such as Homo neanderthalensis.