Pyrgulopsis is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae.
The San Bernardino springsnail is an endangered species of freshwater snail in the family Hydrobiidae. This species is endemic to a small number of springs in the USA and northern Mexico.
The Bruneau hot springsnail, scientific name Pyrgulopsis bruneauensis, is a species of very small freshwater snail that has a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States, Bruneau River in Idaho. Its natural habitat is thermal springs. It is threatened by habitat loss.
The Kingman springsnail is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Mohave County, Arizona, in the United States.
The Crystal Spring springsnail, scientific name Pyrgulopsis crystalis, is a species of small freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae.
The Davis County springsnail, scientific name Pyrgulopsis davisi, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusk in the family Hydrobiidae.
The Fairbanks springsnail, scientific name Pyrgulopsis fairbanksensis, is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.
The Gila springsnail, scientific name Pyrgulopsis gilae, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The South Sierra Nevada springsnail, scientific name Pyrgulopsis giuliani, is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The Verde Rim springsnail, scientific name Pyrgulopsis glandulosa, is a species of small freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. The common name refers to the Verde River in Arizona.
The Naegele springsnail, also known as the Presidio County springsnail, scientific name Pyrgulopsis metcalfi, is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The Montezuma Well springsnail is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Montezuma Well, a large sinkhole in Yavapai County, Arizona, in the United States.
The Page springsnail is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is endemic to Arizona in the United States, where it is known only from the Upper Verde River drainage in Yavapai County.
The distal-gland springsnail, scientific name Pyrgulopsis nanus, is a species of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae. This species is endemic to the United States.
The Pecos springsnail, scientific name Pyrgulopsis pecosensis, is a species of gastropod in the family Hydrobiidae, the mud snails. It is endemic to the United States.
The fossil springsnail, scientific name Pyrgulopsis simplex, is a species of minute freshwater spring snails, aquatic gastropod mollusks or micromollusks in the family Hydrobiidae. This species is endemic to the United States.
The Huachuca springsnail scientific name Pyrgulopsis thompsoni, is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The Three Forks springsnail, scientific name Pyrgulopsis trivialis, is a species of very 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 is a reference to its endemic range at Three Forks, Arizona.
Gammarus desperatus, commonly known as Noel's Amphipod, is a species of small, amphipod crustacean in the family Gammaridae.
The Amargosa springsnail is a snail in the family Hydrobiidae. It is endemic to the Amargosa River drainage of the southwestern United States. The small snail is known to occur in several near-brackish springs, including the type locality of Saratoga Springs in Death Valley.
