Now, a population of one of those species---a freshwater limpet last seen more than 60 years ago and presumed extinct---has been found in a tributary of the heavily dammed Coosa River in Alabama's Mobile River Basin. Researchers from the University of Michigan, the Alabama Aquatic Biodiversity Center and the Kentucky State Nature Preserves Commission reported the rediscovery May 31 in the online, open-access journal PLoS One.
Read More: Mass extinction victim survives! Snail long thought extinct, isn't @e! Science News