Fish
Blackfin cisco
Coregonus nigripinnis
The blackfin cisco, also known as the jumbo herring, was once found in lakes Huron, Michigan, Ontario, and Superior. It was a silver fish with black fins and a black stripe on its spine. By the 1940's its numbers were greatly reduced due to over fishing. Predation from an introduced species, the sea lamprey, further reduced their number and they were extinct by 1960.
Blue Pike
Stizostedion vitreum glaucum
The blue pike was once found in the Great Lakes region of the United States and Canada. Over fishing, pollution, and the introduction on non-native species lead to its extinction in 1970.
Mammals
Eastern Elk
Cervus canadensis canadensis
The eastern elk was once found in the United States east of the Great Plains. It became extinct in 1880.
Sea Mink
Mustela macrodon
The sea mink is believed to have lived on the rocky coasts off the waters of New England and eastern Canada. It was twice the size of the American mink. It was hunted for its pelt. It became extinct by the 1890s.
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