Armored marstonia
Encyclopedia
The armored marstonia, scientific name Marstonia pachyta, also known as Pyrgulopsis pachyta, is a species
of freshwater snail
, an aquatic
gastropod mollusk in the family Hydrobiidae
.
This species is endemic to Alabama
, the United States
. It is found in only two creeks, both in Limestone County
. Its natural habitat
is river
s. It is threatened by habitat loss.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of freshwater snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
, an aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
gastropod mollusk in the family Hydrobiidae
Hydrobiidae
Hydrobiidae, common name mud snails, is a large cosmopolitan taxonomic family of very small freshwater snails and brackish water snails that have an operculum, aquatic gastropod mollusks in the clade Littorinimorpha.- Distribution :...
.
This species is endemic to Alabama
Alabama
Alabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland...
, the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
. It is found in only two creeks, both in Limestone County
Limestone County, Alabama
Limestone County is a county of the U.S. state of Alabama, and is included in the Huntsville Metropolitan Area.It is also included in the merged Huntsville-Decatur Metro Area. Its name comes from Limestone Creek, a local stream. In 2000, the population was 65,676. As of 2010 the county's...
. Its natural habitat
Habitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...
is river
River
A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...
s. It is threatened by habitat loss.