FOR THE COMMONPLACE BOOK this page linked from Borepatch (I told you he finds the neatest stuff!), on Ice Age Civilizations. As BP put it, the earliest cities built by humanity are probably under water. And not in the sense of their mortgages being more than the property is worth.
As one of the “races” of my ficton comprises the Gods of Olympus — putatively 10,000-40,000 years old — and the Aegean was considerably smaller than now, one might assume that the earliest settlements of the Doric peoples were in that region, rather than, as I have assumed, in the Peloponnesian highlands.
It’s still fascinating to include the Atreides in the East families lineage, but I’ll have to hint that earlier ancestors came from other locations.