Southern acornshell, Southern acorn riffle shell
Epioblasma othcaloogensis, the southern acornshell or southern acorn riffle shell, was a species of freshwater mussel in the family Unionidae. It was only known from the Coosa and Cahaba Rivers of the southeastern United States.
This species has been heavily impacted by dam construction, dredging, and water pollution. The last living individual was seen in 1974, and subsequent surveys have failed to locate any living populations. Some scientists believe it is now extinct.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...