(WXYZ) — Often called the living dinosaur of the Great Lakes, lake sturgeon are known to live more than 100 years. Researchers looked at five populations of Great Lakes lake sturgeon — Black Lake, Michigan (Cheboygan and Presque Isle counties); Sturgeon River, Michigan (Baraga County); Menominee River, Michigan/Wisconsin; St. Clair River (St. Clair County) and Lake Winnebago, Wisconsin. They then used the data to estimate lake sturgeon longevity by asking “If a lake sturgeon grows X centimeters per year, then how many years does it take for a lake sturgeon to get to a particular size?” According to the DNR, estimated longevity ranged from 90 to 279 years for males and from 99 to 427 years for females. "That’s up to 277 years older than the oldest lake sturgeon previously recorded!