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Lithasia
''Lithasia'' is a genus of medium-sized freshwater snails, aquatic gilled gastropod molluscs in the family Pleuroceridae. This genus is endemic to rivers in the mid-southern United States. Species Species within the genus ''Lithasia'' include: * Armigerous river snail (''Lithasia armigera'') * Knobby rocksnail (''Lithasia curta'') * Dutton's river snail (''Lithasia duttoniana'') * Geniculate river snail (''Lithasia geniculata'') * Jay's river snail Jay's river snail also known as the rugose rocksnail, scientific name ''Lithasia jayana'', is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae, the hornsnails. This speci ... (''Lithasia jayana'') * Elk River file snail (''Lithasia lima'') * Muddy rocksnail (''Lithasia salebrosa'') * Varicose rocksnail (''Lithasia verrucosa'') References Nomenclator Zoologicus info Pleuroceridae Taxa named by Samuel Stehman Haldeman Taxonomy articles created by P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armigerous River Snail
The armigerous river snail or armored rocksnail, scientific name ''Lithasia armigera'', is a species of freshwater snail with an operculum, an aquatic gastropod mollusk 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 .... This species is endemic to the United States. References Pleuroceridae Gastropods described in 1821 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knobby Rocksnail
The knobby rocksnail, scientific name ''Lithasia curta'', is a species of medium-sized freshwater snail, an aquatic gilled gastropod mollusk in the family Pleuroceridae. This species is endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ... to the United States. References Molluscs of the United States Pleuroceridae Gastropods described in 1868 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutton's River Snail
Dutton's river snail also known as the helmet rocksnail, scientific name ''Lithasia duttoniana'', is a species of freshwater snails with an operculum, aquatic gastropod mollusks 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 Pleuroceridae Gastropods described in 1841 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geniculate River Snail
The geniculate river snail or ornate rocksnail, scientific name ''Lithasia geniculata'', is a species of freshwater snails with an operculum, aquatic gastropod mollusks 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 Pleuroceridae Gastropods described in 1840 Taxa named by Samuel Stehman Haldeman Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jay's River Snail
Jay's river snail also known as the rugose rocksnail, scientific name ''Lithasia jayana'', is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Pleuroceridae, the hornsnails. This speciet 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 Pleuroceridae Gastropods described in 1841 Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elk River File Snail
The Elk River file snail also known as the warty rocksnail, scientific name ''Lithasia lima'', is a species of freshwater snail with 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 Pleuroceridae 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] |
Muddy Rocksnail
The muddy rocksnail, also known as the rugged river snail, scientific name ''Lithasia salebrosa'', 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 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 .... This species is endemic to the United States. References Molluscs of the United States Pleuroceridae 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] |
Varicose Rocksnail
The varicose rocksnail also known as the verrucose file snail, scientific name ''Lithasia verrucosa'', is a species of freshwater snail with an operculum, an aquatic gastropod mollusk 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 .... This species is endemic to the United States. References Molluscs of the United States Pleuroceridae Gastropods described in 1820 Taxa named by Constantine Samuel Rafinesque Taxonomy articles created by Polbot {{Pleuroceridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. Reproduction is iteroparous, and juvenile snails emerge from eggs laid on a firm surface by a gonochoristic female. There is no veliger stage. Distribution As currently defined, this family is confined entirely to eastern North American fresh waters. Similar snails formerly classified with Pleuroceridae, but now assigned to other families are widespread in temperate and tropical parts of Southern and Eastern Asia, and Africa. Most require unpolluted rivers and streams, but a few are adapted to living in lakes or reservoirs. Taxonomy 2005 taxonomy The following two subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005): * Pleurocerinae P. Fischer, 1885 - synonyms: Ceriphasiinae Gill, 1863; Strepomatidae Haldeman, 1864 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samuel Stehman Haldeman
Samuel Stehman Haldeman (August 12, 1812 – September 10, 1880) was an American naturalist and philologist. During a long and varied career he studied, published, and lectured on geology, conchology, entomology and philology. He once confided, "I never pursue one branch of science more than ten years, but lay it aside and go into new fields." Early life and education Haldeman was born in Locust Grove, Pennsylvania on August 12, 1812, the oldest of seven children of Henry Haldeman and Frances Stehman Haldeman. Locust Grove was the family estate on the Susquehanna River, twenty miles below Harrisburg. His father was a prosperous businessman and his mother was an accomplished musician who died when Haldeman was twelve years old. In 1826, he was sent to Harrisburg to attend school at the Classical Academy, run by John M. Keagy. After two years in the academy, he enrolled at Dickinson College where his interest in natural history was encouraged by his professor, Henry Darwin Rogers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung (e.g. ''Ampullariidae''). Most feed on algae, but many are detritivores and some are filter feeders. According to a 2008 review of the taxonomy, there are about 4,000 species of freshwater gastropods (3,795–3,972). At least 33–38 independent lineages of gastropods have successfully colonized freshwater environments. It is not possible to quantify the exact number of these lineages yet, because they have yet to be clarified within the Cerit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
