Gyrotoma excisa (Lea)

Excited Slitsnail (Gyrotoma excisa)

The Excited Slitsnail was described in 1843, it was endemic to the Coosa River in Alabama, USA and disappeared at the beginning of the 20th century when the rivers system was impounded. 

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Depiction from: ‘Calvin Goodrich: The genus Gyrotoma. University of Michigan 1924’

(public domain)

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edited: 07.05.2019