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Should proto-Greek really be included? It's not a period but a Proto-language, and an unattested one at that. 18.104.22.168 (talk) 19:37, 20 July 2015 (UTC) For example, Proto-Germanic isn't included in the history of the German language. 22.214.171.124 (talk) 19:39, 20 July 2015 (UTC)
Proto-Greek language is a period that this part of language was spoken, like the Arhaic language. --Collme (talk) 20:57, 27 March 2016 (UTC)