Tryonia is a genus of freshwater snails in the family Hydrobiidae. This genus is sometimes placed in the family Cochliopidae
The variegated butterfly bat is a species of vesper bat. It is sometimes also called the leaf-winged bat, or simply the butterfly bat. It is not currently endangered, but may be threatened by habitat loss in some parts of its range.
The Amargosa toad is a species of toad in the family Bufonidae. It was at one time considered to be a subspecies of the western toad. It is threatened by habitat loss and is classified by the IUCN as being "Critically endangered".
The Diamond Y springsnail, scientific name Tryonia adamantina, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
Tryonia alamosae, common name the Alamosa springsnail, is a species of small freshwater snail, an aquatic prosobranch gastropod mollusk in the family Hydrobiidae.
The sportingoods tryonia, scientific name Tryonia angulata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae. This species is endemic to the United States.
Brune's tryonia, scientific name Tryonia brunei, is a species of very small freshwater snail that has a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae. This species is endemic to the United States (Texas). It was formerly listed as Threatened in 1993/1994 and Data Deficient since 1996 until it was changed to Critically Endangered and possibly extinct in 2012; this is because it is found only in Phantom Lake, Balmorhea Lake, has range of less than 100 km², and was last observed in 1993. A 1991 report by the United States Fish and Wildlife Service also listed it as Endangered and they also later noted the unknown population. It is found in firm substratum and on mud before modification.
Cheatum's snail also known as the Phantom tryonia, scientific name Tryonia cheatumi, is a species of small freshwater snails with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae.
The grated tryonia, also known as the White River snail, scientific name Tryonia clathrata, is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusc in the family Hydrobiidae. This species is endemic to the United States.
The Point of Rocks tryonia, scientific name Tryonia elata, is a species of freshwater snail, an aquatic gastropod mollusc in the family Hydrobiidae.
The minute tryonia scientific name Tryonia ericae, is a species of very small or minute freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae. This species is endemic to the United States.
The Gila tryonia 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 Graham County.
The California brackish water snail, also known as the mimic tryonia, scientific name Tryonia imitator, is a species of very small brackish water snail that have an operculum, aquatic gastropod mollusks in the family Hydrobiidae.
Koster's tryonia, scientific name Tryonia kosteri, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae.
The Quitabaquito tryonia, scientific name Tryonia quitobaquitae, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae. This species is endemic to the United States.
Pseudocotalpa giulianii, also known as Giuliani's dune scarab and Giuliani's dune scarab beetle, is a species of sand dune-inhabiting beetle in the family Scarabaeidae. It is endemic to Nevada, the United States. It is named for Derham Giuliani who first collected this species from the Amargosa Desert.
The black-and-white ruffed lemur is an endangered species of ruffed lemur, one of two which are endemic to the island of Madagascar. Despite having a larger range than the red ruffed lemur, it has a much smaller population that is spread out, living in lower population densities and reproductively isolated. It also has less coverage and protection in large national parks than the red ruffed lemur. Three subspecies of black-and-white ruffed lemur have been recognized since the red ruffed lemur was elevated to species status in 2001.
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.
Cyprinodon nevadensis is a species of pupfish in the genus Cyprinodon. The species is also known as the Amargosa pupfish, but that name may also refer to one subspecies, Cyprinodon nevadensis amargosae. All six subspecies are or were endemic to very isolated locations in the Mojave Desert of California and Nevada.
