Homo erectus is a hominid species that is believed to be an ancestor of modern humans. The species is found from the middle Pleistocene onwards. It had fairly modern human features, with a larger cranial capacity than that of Homo habilis. The forehead is less sloping and the teeth are smaller. Erectus would bear a striking resemblance to modern humans. Erectus was also a tool user, again using more diverse and sophisticated tools than its ancestors.