Superfamily Valvatoidea Higher classification Valvata | Scientific name Valvata tricarinata Rank Species | |
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Similar Valvata, Molluscs, Gastropods, Valvata sincera, Valvatidae | ||
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.
Contents
Distribution
This species occurred in the Northwest Atlantic Ocean and along the Gulf of Maine.
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. There were described eight forms or subspecies.
References
Valvata tricarinata Wikipedia(Text) CC BY-SA