Valvata tricarinata, common name the three-ridge valvata or threeridge valvata, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails.
Distribution This species occurs in North America.
Shell description There is great variation in the degree of carination of the shell.
Paleontology Valvata tricarinata is abundant in nearly all lacustrine and fluviatile deposits in North America of the Pleistocene period. The fossil shells are more variable than the Recent ones.Frank C. Baker. July 1921. New forms of Pleistocene molluks of Illinois. The Nautilus, volume 35, number 1, 22–24. Eight forms or subspecies were described.
References This article incorporates public domain text from the reference.
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
External links Photo of the shell of Valvata tricarinata