''Leptoxis'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

freshwater snail Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...

s with a gill and an operculum, aquatic gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

s in the family

Pleuroceridae Pleuroceridae, common name pleurocerids, is a family of small to medium-sized freshwater snails, aquatic gilled gastropod mollusks in the superfamily Cerithioidea.These snails have an operculum and typically a robust high-spired shell. Reprodu ...

. Species within this genus inhabit rocky fast-flowing parts of unpolluted and unimpounded mid-sized rivers in the American mid

South South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþa ...

and the southern

Midwest The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of the United States. ...

. Species in the subgenus ''Mudalia'' inhabit rivers and creeks in the

Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe an ...

drainage.

Species

Species within the genus ''Leptoxis'' include. Those that are extinct are marked with a dagger †. * '' Leptoxis ampla'' (Anthony, 1855) * ''

Leptoxis arkansensis ''Leptoxis'' is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Pleuroceridae. Species within this genus inhabit rocky fast-flowing parts of unpolluted and unimpounded mid-sized rivers in the ...

'' (Hinkley, 1915) * ''

Leptoxis carinata ''Leptoxis carinata'', common name the crested mudalia, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. Shell description ''Leptoxis carinata'' has a strong globose shell, with hig ...

'' (Bruguière, 1792) *

Agate rocksnail ''Leptoxis clipeata'', the agate rocksnail, was a freshwater snail in the family Pleuroceridae. Like all ''Leptoxis'', the species required free-flowing unpolluted water. It was endemic Endemism is the state of a species being found in a sin ...

(''Leptoxis clipeata'' (Smith, 1922)) *

Oblong rocksnail ''Leptoxis compacta'', the oblong rocksnail, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the Cahaba River in Alabama, United States. It was thought to ...

(''Leptoxis compacta'') * ''

Leptoxis crassa ''Athearnia crassa'', the boulder snail, was a species of freshwater snail in the family Pleuroceridae. It was native to the United States, where it was known from Alabama, Georgia, Tennessee, and Virginia. It is now extinct Extinction ...

'' (Haldeman 1841) * ''

Leptoxis dilatata ''Leptoxis'' is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Pleuroceridae. Species within this genus inhabit rocky fast-flowing parts of unpolluted and unimpounded mid-sized rivers in the ...

'' (Conrad, 1835) *

Interrupted rocksnail ''Leptoxis foremani'', the interrupted rocksnail, is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to parts of the Coosa River and its tributaries ...

(''Leptoxis foremanii'' (I. Lea, 1843) ) * Maiden rocksnail (''Leptoxis formosa'' (I. Lea, 1860) ) *

Rotund rocksnail The rotund rocksnail, scientific name †''Leptoxis ligata'', was a species of gastropod in the family Pleuroceridae. This species was endemic to the United States The United States of America (U.S.A. or USA), commonly known as the Unit ...

(''Leptoxis ligata'' (Anthony, 1860)) *

Lyrate rocksnail The lyrate rocksnail, scientific name †''Leptoxis lirata'', was a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species was endemic to the United States The U ...

(''Leptoxis lirata'' (Smith, 1922)) *

Black mudalia The black mudalia (''Elimia melanoides'') is a species of freshwater snail in the family Pleuroceridae. It is endemic to the Black Warrior River system of Alabama in the United States. It was thought to be extinct until it was rediscovered duri ...

(''Leptoxis melanoides'' (Conrad, 1834) ) *

Knob mudalia The knob mudalia, scientific name ''Leptoxis minor'', is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States The United St ...

(''Leptoxis minor'' (Hinkley, 1912) ) *

Bigmouth rocksnail The bigmouth rocksnail, scientific name †''Leptoxis occultata'', was a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species was endemic to the United States ...

(''Leptoxis occultata'' (Smith, 1922) ) *

Spotted rocksnail The spotted rocksnail, scientific name ''Leptoxis picta'', is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States The Unite ...

(''Leptoxis picta'') *

Plicate rocksnail The plicate rocksnail, scientific name ''Leptoxis plicata'', is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United States, specifically th ...

(''Leptoxis plicata'' (Hinkley, 1915)) *

Mainstream river snail The mainstream river snail, also known as the onyx rocksnail, scientific name ''Leptoxis praerosa'', is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endem ...

(''Leptoxis praerosa'' (Say, 1821) ) *

Coosa rocksnail The Coosa rocksnail, scientific name †''Leptoxis showalterii'', also known as the "ribbed rocksnail", was a species of freshwater snails with an operculum (gastropod), operculum, Aquatic animal, aquatic gastropod mollusks in the family Pleuroce ...

(''Leptoxis showalterii'' (I. Lea, 1860) ) *

Painted rocksnail The painted rocksnail (''Leptoxis coosaensis,'' formerly ''Leptoxis taeniata'') is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. This species is endemic to the United Sta ...

(''Leptoxis taeniata'') * ''

Leptoxis torrefacta ''Leptoxis torrefacta'', or the squat rocksnail, is a species of freshwater snail in the family Pleuroceridae. This species was endemic to Alabama, the United States, with records from the Coosa River. It is now extinct Extinction is th ...

'' * ''

Leptoxis trilineata ''Leptoxis'' is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Pleuroceridae. Species within this genus inhabit rocky fast-flowing parts of unpolluted and unimpounded mid-sized rivers in t ...

'' (Say, 1829) * ''

Leptoxis umbilicata ''Leptoxis'' is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Pleuroceridae. Species within this genus inhabit rocky fast-flowing parts of unpolluted and unimpounded mid-sized rivers in t ...

'' (Wetherby, 1876) *

Smooth rocksnail The smooth rocksnail, scientific name ''Leptoxis virgata'', is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae Pleuroceridae, common name pleurocerids, is a family of sm ...

(''Leptoxis virgata'') *

Striped rocksnail The striped rocksnail (''Leptoxis vittata'') was a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae Pleuroceridae, common name pleurocerids, is a family of small to medium- ...

(''Leptoxis vittata'' (I. Lea, 1860)) Synonyms: * ''Leptoxis anthonyix'' Anthony's river snail is a synonym for ''

Athearnia anthonyi ''Athearnia anthonyi'' is a rare species of freshwater snail in the family Pleuroceridae. Its common name is Anthony's riversnail. It is native to three rivers in the Tennessee River system in the United States: the main branch and the Sequatchie ...

'' * ''Leptoxis crassa''

boulder snail ''Athearnia crassa'', the boulder snail, was a species of freshwater snail in the family Pleuroceridae. It was native to the United States, where it was known from Alabama, Georgia, Tennessee, and Virginia. It is now extinct Extinction is ...

is a synonym for ''Athearnia crassa'' * ''Leptoxis pisum'' Haldeman, 1848: synonym of ''

'' (Haldeman 1841) * ''Leptoxis rapaeformis'' Haldeman, 1848: synonym of ''

'' (Conrad, 1835)

References

{{Taxonbar, from=Q3169468 Pleuroceridae Taxa named by Constantine Samuel Rafinesque Taxonomy articles created by Polbot