Valvata sincera, common name the mossy valvata is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Valvatidae, the valve snails.
References
Turgeon, D.D., et al. 1998. Common and scientific names of aquatic invertebrates of the United States and Canada. American Fisheries Society Special Publication 26
Further reading Boreal Turret Snail, Valvata sincera. Natural Heritage & Endangered Species Program. 2 pp.