|
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 American mid South and the southern Midwest. Species in the subgenus ''Mudalia'' inhabit rivers and creeks in the Atlantic drainage. Species Species within the genus ''Leptoxis'' include. Those that are extinct are marked with a dagger †. * ''Leptoxis ampla'' (Anthony, 1855) * '' Leptoxis arkansensis'' (Hinkley, 1915) * '' Leptoxis carinata'' (Bruguière, 1792) * Agate rocksnail (''Leptoxis clipeata'' (Smith, 1922)) * Oblong rocksnail (''Leptoxis compacta'') * '' Leptoxis crassa'' (Haldeman 1841) * ''Leptoxis dilatata'' (Conrad, 1835) * Interrupted rocksnail (''Leptoxis foremanii'' (I. Lea, 1843) ) * Maiden rocksnail (''Leptoxis formosa'' (I. Lea, 1860) ) * Rotund rocksnail (''Leptoxis ligata'' (Anthony, 1860)) * Lyrate rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 be extinct due to habitat loss since it had not been collected since 1933, and was formally declared extinct in 2000. The IUCN Red List listed it as extinct in 2006 and in 2012. It was rediscovered in a small section of its previously described habitat in the Cahaba River in 2011, with a formal report published in August 2012.Lamb E. (8 August 2012)Rumors of the Oblong Rocksnail’s Demise Were Somewhat Exaggerated ''Scientific American'', accessed 11 August 2012. Molecular systematic analyses are underway to clarify the genetic position of ''Leptoxis compacta''. Distribution ''Leptoxis compacta'' is restricted to a single location in the Cahaba River, where it was rediscovered in 2011. It lives in an unnamed shoal upstream of the Caha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Pleuroceridae. This species was Endemism, endemic to the United States. It is now extinct. References Leptoxis Extinct gastropods Gastropods described in 1860 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 endemic to the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References Molluscs of the United States Leptoxis Gastropods described in 1821 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 the state of Alabama. The snail has been listed as endangered on the United States Fish and Wildlife Service list of endangered species since October 28, 1998. Description The plicate rocksnail is a pleurocerid snail with a shell that grows to about 20 mm (0.8 in) in length. Shells are subglobose with broadly rounded apertures. The body whorl may be ornamented with strong folds or plicae. Shell color is usually brown, occasionally green, and often with four equidistant color bands. The columella (central column or axis) is smooth, rounded, and typically pigmented in the upper half. The aperture is usually bluish-white, occasionally pink or white. The operculum (plate that closes the shell when the snail is retracted) is da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References Molluscs of the United States Leptoxis Gastropods described in 1834 Taxa named by Timothy Abbott Conrad Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori .... It is now extinct. References Leptoxis Extinct gastropods Gastropods described in 1922 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References Molluscs of the United States Leptoxis Gastropods described in 1912 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 during a 1996 survey.Minton, R. L., et al. (2003)Rediscovery, systematic position, and re-description of "''Leptoxis''" ''melanoides'' (Conrad, 1834) (Mollusca: Gastropoda: Cerithioidea: Pleuroceridae) from the Black Warrior River, Alabama, U.S.A. ''Proceedings of the Biological Society of Washington'' 116 531-41. Studies indicate that the species is better treated in genus ''Elimia ''Elimia'' is a genus of freshwater snails with an operculum, aquatic gastropod mollusks in the family Pleuroceridae. Various species are found in creeks throughout much of the eastern and central United States and the Great Lakes region of Cana ...''. References Molluscs of the United States Leptoxis Endemic fauna of Alabama Gastropods described in 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... It is now extinct. References Leptoxis Extinct gastropods Gastropods described in 1922 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... It is now extinct. References Leptoxis Extinct gastropods Gastropods described in 1860 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maiden Rocksnail
The maiden rocksnail, scientific name †''Leptoxis formosa'', 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. It is now extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and .... References *Lea, I. (1860). Descriptions of fourteen new species of Schizostomae, Anculosae and Lithasiae. ''Proceedings of the Academy of Natural Sciences of Philadelphia.'' 12: 186-188 fter 22 May 1860, ''available online at'' https://www.biodiversitylibrary.org/page/26297333 Leptoxis Extinct gastropods Gastropods described in 1860 Taxonomy articles created by Polbot Taxa named by Isaac Lea {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
