Proto-Algonquian Language - Urheimat

There remains some disagreement over the Algonquian Urheimat (homeland of the protolanguage). The initial theory, first put forth by Frank T. Siebert, Jr. in 1967 based on examining of the ranges of numerous species of plants and animals for which reliable Algonquian cognates existed, holds that Proto-Algonquian was spoken between Georgian Bay and Lake Ontario, in Ontario, Canada, and at least as far south as Niagara Falls. Research a generation later suggests that in fact it was spoken farther west than this, perhaps "somewhere immediately west of Lake Superior."