What is archaeolinguistics?

Apparently my post ‘Paleolinguistics and archaeolinguistics’ is currently the #2 result for the keyword ‘archaeolinguistics’ (and #4 for ‘paleolinguistics’). Paleolinguistics is a fairly well-known term among linguists): it refers to the extension of historical linguistics deep into prehistory, often using methods that are not accepted by the majority of historical linguists. But while archaeolinguistics hasn’t…