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.
| Valvata tricarinata | |
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| Drawing: apertural view of shell of Valvata tricarinata | |
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| Species: | V. tricarinata
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| Binomial name | |
| Valvata tricarinata Say, 1817
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Cyclostoma tricarinata Say, 1817 (original combination) | |
Distribution edit
This species occurs in North America.
Shell description edit
There is great variation in the degree of carination of the shell.[2]
Paleontology edit
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.[2] Eight forms or subspecies were described.[2]
References edit
This article incorporates public domain text from the reference.[2]
- ^ Seddon, M.B.; Lepitzki, D. (2017). "Valvata tricarinata". IUCN Red List of Threatened Species. 2017: e.T189129A80973880. doi:10.2305/IUCN.UK.2017-3.RLTS.T189129A80973880.en. Retrieved 18 November 2021.
- ^ a b c d Frank C. Baker. July 1921. New forms of Pleistocene molluks of Illinois. The Nautilus, volume 35, number 1, 22–24.
- 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 edit