Hominids have evolved over time from early groups like Australopithecines to later groups such as Homo Erectus, Homo Neanderthalensis, and early modern Homo Sapiens. Australopithecines lived many years ago and walked on all fours, while Homo Erectus could walk upright but did not know how to control fire. Homo Neanderthalensis was able to walk upright and use tools to hunt animals, and also controlled the use of fire. Many fossils of early modern Homo Sapiens have been found, showing they lived on Earth many years ago. Hominids evolved to have bigger brains and more advanced skills over long periods of time.