The problem, perhaps arises because we use a term for artifacts- archaeology and another for humans- anthropology. These are the kinds of dates they're talking about, I think. Granted, it makes it a bit confusing for folks like us who understand our Paleo from our Archaic-- when they're talking about Paleolithic and Neolithic homo sapiens. What with this new Paleo diet craze, the terms are being thrown around (and the foods being assigned 'Paleo' are very, very modern and bear little if any resemblance to the diet of the true Paleolithic human). Yakker
In the pre-history of mankind, there are two important periods, the Paleolithic (Old Stone Age) Era and the Neolithic (New Stone Age) era. Characteristics of the Paleolithic Era (2,000,000 to 10/9,000 BC): 1) name from the type of primitive stone tools used by early men and women; 2) Homo sapiens appeared about 200,000 year ago; 3) their migration out of Africa to Australia and the Americas (32,000-13,000 BC) was made possible by an Ice Age, which created land bridges; 4) Paleolithic lifestyle was a result of their relationship to nature. They were nomadic hunters, gatherers, and fishers; they did not produce their own food and they lived precariously as peoples completely dependent on their environment. Discoveries include the use of fire for light, heat, and cooking; the invention of stone weapons and tools such as daggers, spear points, axes, choppers, and scrapers; the use of spoken language for communication and the preservation of culture; and religious rituals; and probably the invention of primitive social, political, and economic institutions. Shelters and clothing were made from animal skins and plants. Works of art, ranging from decorated tools and weapons to small (fertility?) figures like the Venus of Willendorf