Snail thought extinct found in the Cahaba River | al.com

Snail thought extinct found in the Cahaba River | al.com: BIBB COUNTY, Alabama -- Using the gastropod equivalent of dental records, a University of Alabama graduate student has positively identified a snail, declared extinct in 2000, as being alive in a small but thriving colony in the Cahaba River.
Researchers believe the find may be a sign that pollution reductions resulting from the Clean Water Act as well as improvements made to the river by conservationists may be paying off.
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