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More flakes were knocked off from both sides of a stone and there is evidence that the maker had a preconceived notion of the tool's final form.Acropolis - The "high point" or citadel of an ancient Greek city, like the Acropolis in Athens.Aerial Photography - The various techniques of taking photographs of natural or cultural features from the air, using balloons, airplanes, satellites, and other sources, in order to study the features in their entirety from a top-down (bird's eye) view.Aerial Reconnaissance - The technique of searching for sites and features, both cultural and natural, from the air, often using aerial photography or the human eye.This type of dating using typologies is the most common form. Associated dating is where something is dated by its relation to something else.The question you will likely have is how did people work out the dates for the typologies in the first place? For example if you find a coin hoard in a pot then you can use the dates on the coins to say that the pot has to be of X date.It was characterized by large bifaces, particularly hand axes.This tool-making technology was a more complex way of making stone tools than the earlier Oldowan technology.

We finish with the second of our two catch-all categories, the first being where we learned about OOParts.Although discarded pieces of old machines are not uncommon in Russia, the man became curious and showed his find to some scientists.Testing revealed that the toothed object was almost pure aluminum and almost certainly artificially made. This raised some interesting questions, as aluminum of this purity and shape can’t form naturally and humans didn’t figure out how to make it until 1825.A Russian man found a strange piece of machinery from Vladivostok, the administrative capital of the Primorsky Krai area.The object resembled a piece of tooth wheel and was embedded in a piece of coal he was using to light a fire.The Man Tracks are also nice cases of fraud in action since more than a few of them were actually carved to look like human feet, and then sold to the unwary [Kuban 2010].

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