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Obelus (gastropod)
''Obelus'' is a European genus of small air-breathing land snails, Terrestrial animal, terrestrial pulmonate gastropod molluscs in the subfamily Geomitrinae of the family Geomitridae, the hairy snails and their allies.MolluscaBase eds. (2022). MolluscaBase. Obelus W. Hartmann, 1842. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=996324 on 2022-07-22 Species Species within the genus ''Obelus'' include: * ''Obelus despreauxii'' (d'Orbigny, 1839) * ''Obelus discogranulatus'' M. R. Alonso & Groh, 2003 * ''Obelus mirandae'' (R. T. Lowe, 1861) * ''Obelus moderatus'' (Mousson, 1857) * ''Obelus moratus'' (Mousson, 1872) * ''Obelus pumilio'' (Dillwyn, 1817) * ''Obelus zarzaensis'' Neiber, Walther, Santana, M. R. Alonso & Ibáñez, 2016 ;Synonym: * ''Obelus philamnius'' (Bourguignat, 1863): synonyym of ''Xerocrassa philamnia'' (Bourguignat, 1863) (superseded combination) References * Bank, R. A. (2017). Classification of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. 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 of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obelus Discogranulatus
An obelus (plural: obeluses or obeli) is a term in codicology and latterly in typography that refers to a historical annotation mark which has resolved to three modern meanings: * Division sign * Dagger * Commercial minus sign (limited geographical area of use) The word "obelus" comes from (obelós), the Ancient Greek word for a sharpened stick, spit, or pointed pillar. This is the same root as that of the word 'obelisk'. In mathematics, the first symbol is mainly used in Anglophone countries to represent the mathematical operation of division and is called an obelus. In editing texts, the second symbol, also called a dagger mark is used to indicate erroneous or dubious content; or as a reference mark or footnote indicator. It also has other uses in a variety of specialist contexts. Use in text annotation The modern dagger symbol originated from a variant of the obelus, originally depicted by a plain line , or a line with one or two dots . It represented an iron r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xerocrassa Philamnia
''Xerocrassa'' is a genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the subfamily Helicellinae of the family Geomitridae.MolluscaBase eds. (2022). MolluscaBase. Xerocrassa Monterosato, 1892. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=996348 on 6 August 2022 Some species of ''Xerocrassa'' are instead considered to belong to the ''subgenus'' ''Xerocrassa'', within the genus '' Trochoidea''; in those cases the species are listed under the generic name ''Trochoidea''. However, for other authors both taxa are not closely related being different genera. Taxonomy The genus ''Xerocrassa'' is divided in 3 subgenera: * ''Xerocrassa (Amandana)'' Fagot, 1891 * ''Xerocrassa (Xeroclausa)'' Monterosato, 1892 * ''Xerocrassa (Xerocrassa)'' Monterosato, 1892 Species Species in the genus ''Xerocrassa'': * ''Xerocrassa amphiconus'' (Maltzan, 1883) * '' Xerocrassa barceloi'' (H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obelus Zarzaensis
An obelus (plural: obeluses or obeli) is a term in codicology and latterly in typography that refers to a historical annotation mark which has resolved to three modern meanings: * Division sign * Dagger * Commercial minus sign (limited geographical area of use) The word "obelus" comes from (obelós), the Ancient Greek word for a sharpened stick, spit, or pointed pillar. This is the same root as that of the word 'obelisk'. In mathematics, the first symbol is mainly used in Anglophone countries to represent the mathematical operation of division and is called an obelus. In editing texts, the second symbol, also called a dagger mark is used to indicate erroneous or dubious content; or as a reference mark or footnote indicator. It also has other uses in a variety of specialist contexts. Use in text annotation The modern dagger symbol originated from a variant of the obelus, originally depicted by a plain line , or a line with one or two dots . It represented an iron r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obelus Despreauxii
''Obelus despreauxii'' is a European species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Geomitridae.MolluscaBase eds. (2022). MolluscaBase. Obelus despreauxii (d'Orbigny, 1839). Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=1050514 on 2022-07-22 This species is endemic to Canary Islands The Canary Islands (; ) or Canaries are an archipelago in the Atlantic Ocean and the southernmost Autonomous communities of Spain, Autonomous Community of Spain. They are located in the northwest of Africa, with the closest point to the cont .... References * Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017 despreauxii Molluscs of the Canary Islands Endemic fauna of the Canary Islands Gastropods described in 1839 Taxonomy articles created by Polbot {{Geomitridae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land Snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial molluscs, terrestrial gastropod mollusks that have gastropod shell, shells (those without shells are known as slugs). However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water. Land snails are a Polyphyly, polyphyletic group comprising at least ten independent evolutionary transitions to terrestrial life (the last common ancestor of all gastropods was marine). The majority of land snails are pulmonates that have a lung and breathe air. Most of the non-pulmonate land snails belong to lineages in the Caenogastropoda, and tend to have a gill and an operculum (gastropod), operculum. The largest clade of non-pulmonate land snails is the Cyclophoroidea, with more than 7,0 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomitridae
Geomitridae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea Helicoidea is a Taxonomy (biology), taxonomic Taxonomic rank, superfamily of air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the order (taxonomy), order Stylommatophora. Taxonomy 2017 taxonomy and l .... Anatomy The family is characterized by the presence of a free right ommatophoral retractor (passing outside the peni-oviducal angle) and a double stimulatory apparatus. A free right ommatophoral retractor has been linked to adaptation to xeric habitats. Taxonomy The family Geomitridae is subdivided in the following subfamilies (according to Razkin ''et al.'', 2015). Genera with the family Geomitridae include: Family Geomitridae *Not belonging to a subfamily: ** '' Keraea'' Gude, 1911 ** '' Peridotitea'' Torres Alba, Holyoak, D. T., Holyoak, G. A., Vázquez Toro & Rip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomitrinae
Geomitridae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea. Anatomy The family is characterized by the presence of a free right ommatophoral retractor (passing outside the peni-oviducal angle) and a double stimulatory apparatus. A free right ommatophoral retractor has been linked to adaptation to xeric habitats. Taxonomy The family Geomitridae is subdivided in the following subfamilies (according to Razkin ''et al.'', 2015). Genera with the family Geomitridae include: Family Geomitridae *Not belonging to a subfamily: ** ''Keraea'' Gude, 1911 ** '' Peridotitea'' Torres Alba, Holyoak, D. T., Holyoak, G. A., Vázquez Toro & Ripoll, 2018 *Subfamily Geomitrinae ** tribe Cochlicellini Schileyko, 1972 *** ''Cochlicella'' Férussac, 1821 *** '' Monilearia'' Mousson, 1872 *** ''Obelus'' W. Hartmann, 1842 *** '' Ripkeniella'' Hutterer & E. Gittenberger, 1998 ** tribe Geomitrini C. Boet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
