greenbrier cavesnail

{{Short description|Species of gastropod}}

{{Use dmy dates|date=February 2025}}

{{Speciesbox

| name = Greenbrier cavesnail

| image =

| status = NT | status_system = IUCN3.1

| status_ref = {{cite iucn |author=Cordeiro, J. |date=2012 |title=Fontigens turritella |volume=2012 |page=e.T8641A3145855 |doi=10.2305/IUCN.UK.2012.RLTS.T8641A3145855.en |access-date=17 November 2021}}

| taxon = Fontigens turritella

| authority = Hubricht, 1976

| synonyms =

}}

The Greenbrier cavesnail (Fontigens turritella), is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States.

The Greenbrier River Valley (which has many caves), is in West Virginia.