Ribbed Slitshell (Gyrotoma pumila)
The Ribbed Slitshell was described in 1860, like all members of this genus, it was endemic to the Coosa River in Alabama, USA, it died out after the impoundment of the river system in the early 20th century.
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edited: 07.05.2019
Dead as the Dodo – Holocene Extinctions
… about the 5692 taxa that disappeared since the beginning of the Anthropocene era (since about 10000 BCE)
