A species that is extinct in the wild (EW) is one that has been categorized by the International Union for Conservation of Nature as known only by living members kept in captivity or as a naturalized population outside its historic range due to massive habitat loss.
Pleurocera catenaria is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Pleuroceridae.
Elimia ampla, common name ample elimia, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae.
The rugged hornsnail, scientific name Pleurocera alveare, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.
Pleurocera is a genus of freshwater snails with an operculum, aquatic gastropod molluscs in the family Pleuroceridae.
The ringed hornsnail, scientific name Pleurocera annulifera, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.
The spiral hornsnail, scientific name Pleurocera brumbyi, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.
The corpulent hornsnail, scientific name Pleurocera corpulenta, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.
The shortspire hornsnail, scientific name Pleurocera curta, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.
The rough hornsnail, scientific name Pleurocera foremani, is a rare species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae.
The skirted hornsnail, scientific name Pleurocera pyrenella, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States.
The telescope hornsnail, scientific name Pleurocera walkeri, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the USA.
Elimia livescens, common name the liver elimia, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae.
Pleurocera acuta, common name the sharp hornsnail, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae, the hornsnails.
Pleuroceras is a genus of ammonite from the lower Jurassic, upper Pliensbachian.
Pleuroceras solare is a species of ammonite from the lower Jurassic, upper Pliensbachian period. Species of this genus were fast-moving nektonic carnivore. Shells can reach about 45 mm in diameter.
Pleuroceras spinatum is a species of ammonite from the lower Jurassic, upper Pliensbachian period. Species of this genus were fast-moving nektonic carnivore.
