Nevada Losses - Nevada Natural Heritage Program

As of the date above, this list includes all taxa known to us that once occurred naturally within Nevada's borders, but which are now either extirpated or extinct. Extinct means that the organism no longer exists anywhere, and is gone forever. Extirpated means that the organism no longer exists within a defined portion of its range (in this case, the State of Nevada), but still lives in other areas. The large number of fishes, amphibians, and aquatic invertebrates on this list highlights the isolated and fragile nature of wetlands in Nevada, and in turn explains why so many of the state's remaining aquatic taxa are listed as endangered, threatened, sensitive, or at-risk.

One of the primary goals of the Nevada Natural Heritage Program's activities is to help prevent any further avoidable additions to this list through prudent conservation planning. We also hold out hope that one or two of the 23 taxa on this list may someday be rediscovered in the state. Once a taxon has been placed on this list, though, rediscovery has become either highly unlikely or impossible.

Scientific Name	Common Name	Extirpated	Extinct
INVERTEBRATES
Pyrgulopsis carinata	carinate Duckwater springsnail		X
Pyrgulopsis nevadensis	Pyramid Lake pebblesnail		X
Pyrgulopsis ruinosa	Fish Lake Valley springsnail		X
Pyrgulopsis sp.	Longstreet springsnail		X
Stagnicola pilsbryi	Fish Springs marshsnail		X
FISHES
Empetrichthys latos concavus	Raycraft Ranch poolfish		X
Empetrichthys latos pahrump	Pahrump Ranch poolfish		X
Empetrichthys merriami	Ash Meadows poolfish		X
Gila bicolor ssp.	High Rock Spring tui chub		X
Gila cypha	humpback chub	X
Lepidomeda altivelis	Pahranagat spinedace		X
Oncorhynchus clarki ssp.	Alvord cutthroat trout		X
Oncorhynchus tshawytscha	chinook salmon	X
Ptychocheilus lucius	Colorado pikeminnow	X
Rhinichthys deaconi	Las Vegas dace		X
Rhinichthys osculus reliquus	Grass Valley speckled dace		X
AMPHIBIANS
Rana fisheri	Vegas Valley leopard frog		X
MAMMALS
Bison bison	bison	X
Canis lupus	gray wolf	X
Gulo gulo	wolverine	X
Lynx canadensis	north american lynx	X
Sigmodon arizonae plenus	Arizona cotton rat	X
Ursus arctos	grizzly bear	X
BIRDS
Ectopistes migratorius	Passenger Pigeon		X
Gymnogyps californianus	California Condor	X