what period were cavemen in
Best Answer: There is one thing you must understand about the so-called cavemen. They were nothing like the guys you see in the Geico commercials. The species known as AUSTRALOPITHECUS AFARENSIS is an extinct hominid which lived between 3.9 and 2.9 million years ago (if you want an exact year, put BC after the 3.9 million) and was the first hominid--or man-like being--to walk on both feet, and not live in trees.