Transverse grand pyrg
Encyclopedia
The transverse grand pyrg (Pyrgulopsis cruciglans) is a species of gastropod in the Hydrobiidae
family. It is endemic to the United States
.
Hydrobiidae
Hydrobiidae, common name mud snails, is a large cosmopolitan taxonomic family of very small freshwater snails and brackish water snails that have an operculum, aquatic gastropod mollusks in the clade Littorinimorpha.- Distribution :...
family. It is endemic to the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
.