title: List of mollusks of Utah
text: # List of mollusks of Utah
  
  This is a list of mollusks observed in the U.S. state of Utah.
  
  * Bear Lake springsnail (Pyrgulopsis pilsbryana)
  * Bifid duct pyrg (Pyrgulopsis peculiaris)
  * Black Canyon pyrg (Pyrgulopsis plicata)
  * Black Gloss (Zonitoides nitidus)
  * Brian Head Mountainsnail (Oreohelix parawanensis)
  * California floater (Anodonta californiensis)
  * Carinate Glenwood pyrg (Pyrgulopsis inopinata)
  * Cloaked physa (Physa megalochlamys)
  * Coarse Rams-horn (Planorbella binneyi)
  * Creeping ancylid (Ferrissia rivularis)
  * Crestless column (Pupilla hebes)
  * Cross snaggletooth (Gastrocopta quadridens)
  * Cross vertigo (Vertigo modesta)
     * V. m. insculpta
     * V. m. corpulenta
     * V. m. parietalis
  * Deseret mountainsnail (Oreohelix peripherica)
  * Desert springsnail (Pyrgulopsis deserta)
  * Desert tryonia (Tryonia porrecta)
  * Eureka mountainsnail (Oreohelix eurekensis)
     * O. e. eurekensis
     * O. e. uinta
  * Fat-whorled pondsnail (Stagnicola bonnevillensis)
  * Fish Lake physa (Physella microstriata)
  * Fish Springs marshsnail (Stagnicola pilsbryi)
  * Freshwater snail (Fossaria techella)
  * Freshwater snail (Fossaria modicella rustica)
  * Glass physa (Physa skinneri)
  * Glossy valvata (Valvata humeralis californica)
  * Great Basin rams-horn (Helisoma newberryi)
  * Green River pebblesnail (Fluminicola coloradoensis)
  * Hamlin Valley pyrg (Pyrgulopsis hamlinensis)
  * Kanab ambersnail (Oxyloma kanabense)
  * Lamb rams-horn (Planorbella oregonensis)
  * Lance aplexa (Aplexa elongata)
  * Land snail (Nesovitrea electrina)
  * Longitudinal gland pyrg (Pyrgulopsis anguina)
  * Lyrate mountainsnail (Oreohelix haydeni)
  * Mellow column (Columella columella alticola)
  * Mexican coil (Helicodiscus eigenmanni)
  * Mill Creek mountainsnail (Oreohelix howardi)
  * Minute gem (Hawaiia minuscula minuscula)
  * Mitered vertigo (Vertigo concinnula)
  * Montane snaggletooth (Gastrocopta pilsbryana)
  * Mountain marshsnail (Stagnicola montanensis)
  * Mud amnicola (Amnicola limosus limosus)
  * New Zealand mud snail (Potamopyrgus antipodarum) - not native and considered invasive
  * Ninemile pyrg (Pyrgulopsis nonaria)
  * Northwest Bonneville pyrg (Pyrgulopsis variegata)
  * Oregon floater (Anodonta oregonensis)
  * Otter Creek pyrg (Pyrgulopsis fusca)
  * Ovate vertigo (Vertigo ovata)
  * Prairie fossaria (Fossaria bulimoides)
  * Protean physa (Physella virgata)
     * P. v. virgata
     * P. v. berendti
     * P. v. concolor
  * Pygmy fossaria (Fossaria parva)
  * Quagga mussel (Dreissena bugensis) - considered an invasive species, found in Lake Powell and suspected of being in Deer Creek Reservoir
  * Red-rimmed melania (Melanoides tuberculata) - not native and considered invasive
  * Ribbed dagger (Pupoides hordaceus)
  * Rocky Mountain duskysnail (Lyogyrus greggi)
  * Rustic ambersnail (Succinea rusticana rusticana)
  * Santa Rita ambersnail (Succinea grosvenori grosvenori)
  * Sharp sprite (Promenetus exacuous)
  * Sierra ambersnail (Catinella stretchiana)
  * Slim snaggletooth (Gastrocopta pellucida parvidens)
  * Sluice snaggletooth (Gastrocopta ashmuni)
  * Smooth Glenwood pyrg (Pyrgulopsis chamberlini)
  * Southern Bonneville pyrg (Pyrgulopsis transversa)
  * Southern tightcoil (Ogaridiscus subrupicola)
  * Striate disc (Discus shimekii)
  * Striate gem (Hawaiia minuscula neomexicana)
  * Sub-globose snake pyrg (Pyrgulopsis saxatilis)
  * Swamp lymnaea (Lymnaea stagnalis appressa)
  * Tapered vertigo (Vertigo elatior)
  * Texas glyph (Glyphyalinia umbilicata)
  * Thickshell pondsnail (Stagnicola utahensis)
  * Thin-lip vallonia (Vallonia perspectiva)
  * Utah physa (Physella utahensis)
  * Utah roundmouth snail (Valvata utahensis)
  * Variable vertigo (Vertigo gouldii)
  * Western pearlshell (Margaritifera falcata)
  * Wet rock physa (Physella zionis)
  * White-lip dagger (Pupoides albilabris)
  * Widelip pondsnail (Stagnicola traski)
  * Widespread column (or Moss chrysalis snail) (Pupilla muscorum)
  * Winged floater (Anodonta nuttalliana)
  * Yavapai mountainsnail (Oreohelix yavapai)
  