Pyrgulopsis_pachyta
Marstonia pachyta
Species of gastropod
The armored marstonia, scientific name Marstonia pachyta, also known as Pyrgulopsis pachyta, is a species of freshwater snail, an aquatic gastropod mollusc in the family Hydrobiidae.
This species is endemic to Alabama, in the United States,[1] where it is found in only two creeks, both in Limestone County.[3] Its two locations are separated by the man-made Wheeler Lake.[2] It is threatened by habitat loss.[1]