Abstract

A freshwater drum (Aplodinotus grunniens) specimen from postglacial deposits of northern Ontario indicates the species former presence in Lake Barlow–Ojibway. The fact that the species survives in Lakes Abitibi and Timiskaming may be best explained by its having entered Lake Barlow–Ojibway from the west during the Gimli phase of Lake Agassiz about 8000 years ago, but this hypothesis cannot be confirmed with the existing evidence.

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