Hershler & Sada, 1987
The Amargosa tryonia, scientific name Tryonia variegata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. The common name refers to the Amargosa River.
- Bogan, A.E. 1996. Tryonia variegata. 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007.
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