Nystia

Nystia is an extinct genus of fossil freshwater snails, aquatic gastropod molluscs in the family Truncatellidae. The genus Nystia was previously classified within the Stenothyridae or the Micromelaniidae. It is currently classified within the Truncatellidae according to Kadolsky (1988).

Nystia

Nystia is an extinct genus of fossil freshwater snails, aquatic gastropod molluscs in the family Truncatellidae. The genus Nystia was previously classified within the Stenothyridae or the Micromelaniidae. It is currently classified within the Truncatellidae according to Kadolsky (1988).