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Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromolluscs. The pyram family is distributed worldwide with more than 6,000 named species in more than 350 nominal genera and subgenera. This family of micromollusks has been little studied and the phylogenetic relationships within the family are not well worked out. There is an absence of a general consensus regarding which species belong to a specific genus or subgenus, contributing to much confusion. Schander (1999) names more than 300 supraspecific names. As there has been no serious generic revision of the genera worldwide, generic polyphyly can be expected to be rampant throughout the family. However, the family itself is deemed monophyletic. However a study in 2011 seems to indicate that this family is deeply nested within the Pulmonata ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cingulininae
Cingulinini is a taxonomic tribe of very small sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies. Taxonomy Cingulininae was first introduced by Saurin in 1959, and according to Schander, Van Aartsen & Corgan (1999) it comprises seven genera; '' Cingulina'', '' Cinctigua'', ''Coemansia'', '' Paracingulina'', ''Polyspirella'', '' Pseudocingulina'' and '' Puncticingulina''. As Cingulininae it has been one of eleven recognized subfamilies of the gastropod family Pyramidellidae (according to the taxonomy of Ponder & Lindberg, 1997), the pyrams and their allies. The other 10 subfamilies are Odostomiinae, Turbonillinae, Chrysallidinae, Cyclostremellinae, Sayellinae, Syrnolinae, Eulimellinae, Pyramidellinae, Odostomellinae and Tiberiinae. In the taxonomy of Bouchet & Rocroi (2005), this subfamily Cingulininae has been downgraded to the rank of tribe Cingulinini and belonging to the subfamily Turbonillinae. Genera Genera within the subf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyramidellinae
Pyramidellinae is a taxonomic subfamily of minute sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies. MolluscaBase eds. (2021). MolluscaBase. Pyramidellinae. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=224522 on 2021-02-26 Taxonomy It is one of eleven recognised subfamilies of the marine gastropod family Pyramidellidae (according to the taxonomy of Ponder & Lindberg, 1997), which are as follows: Odostomiinae, Turbonillinae, Chrysallidinae, Cingulininae, Cyclostremellinae, Sayellinae, Syrnolinae, Eulimellinae, Pyramidellinae, Odostomellinae and Tiberiinae. 2005 taxonomy In the taxonomy of Bouchet & Rocroi (2005), this subfamily consists of the following tribes, adding the tribe Sayellini containing only two genera ''Sayella'' and ''Petitella''. *Tribe Pyramidellini Gray, 1840 *Tribe Sayellini Wise, 1996 - former subfamily Sayellinae Genera According to Sch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odostomiinae
Odostomiinae, ''Odostomia'' snails and their allies, is a taxonomic subfamily of minute parasitic sea snails. These are marine heterobranch gastropod mollusks, or micromollusks, in the family Pyramidellidae. Taxonomy The subfamily Odostomiinae has been recognized as monophyletic. It includes the tribe Liostomini, a name given to those genera which have an intorted protoconch. The rest of the genera however do not form a single monophyletic taxon. Subfamily Odostomiinae has been classified as one of eleven recognised subfamilies of the very voluminous gastropod family Pyramidellidae (according to the taxonomy of Ponder & Lindberg 1997): Odostomiinae, Turbonillinae, Chrysallidinae, Cingulininae, Cyclostremellinae, Sayellinae, Syrnolinae, Eulimellinae, Pyramidellinae, Odostomellinae and Tiberiinae. In the taxonomy of Bouchet & Rocroi (2005), this subfamily also comprises the subfamilies Chrysallidinae, Cyclostremellinae and Odostomellinae, that they have downgraded to the rank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odostomellinae
Odostomellini is a taxonomic tribe of minute sea snails, marine gastropod molluscs within the family Pyramidellidae the pyrams and their allies. Taxonomy Odostomellinae has been one of eleven recognised subfamilies of the family Pyramidellidae (according to the taxonomy of Ponder & Lindberg, 1997). The subfamily contains two genera: '' Herviera'' and '' Odostomella'' ( Schander and co-workers 1999). In the taxonomy of Bouchet & Rocroi (2005), this subfamily has been downgraded to the rank of tribe Odostomellini in the subfamily Odostomiinae. Genera Genera within the tribe Odostomellini include: * '' Odostomella'' Bucquoy, Dautzenberg & Dollfus, 1883 - type genus of the tribe Odostomellini * '' Heviera'' Melvill & Standen, 1899 Distribution The subfamily occurs in tropic and temperate seas. Shell description The shell of these snails has a blunt, heterostrophic protoconch, which is wrapped up. The texture of these shells is sculptured with ribs. Their color is mostl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christoffer Schander
Carl Fredrik Christoffer Schander (21 May 1960 – 21 February 2012) was a professor in marine biology at the University of Bergen, Norway. He was also a thematic leader at the Centre of Excellence in Geobiology. His doctoral thesis (1997, University of Gothenburg, Sweden) explored the evolutionary relationships of the parasitic marine gastropod family Pyramidellidae. He worked on marine invertebrates, mainly molluscs, and published more than 90 scientific papers in peer-reviewed journals, 76 are indexed in the Web of Knowledge, and fourteen of them have been cited ten or more times. According to his web page, he considered the goal of his research to be understanding the roles that evolutionary forces and phylogeny have played in creating organismal diversity. To help develop this understanding, he used phylogenetic analyses that integrated morphological, ultrastructural and molecular data. His research focused on molluscs and more specifically on the ectoparasitic pyramidelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyramidella Acus
''Longchaeus acus'', common name the needle pyram, is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.Rosenberg, G. (2010). ''Pyramidella acus'' (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=208425 on 2012-01-12 Description The shell is polished. Its color is white, with dark chestnut or chocolate spots, usually arranged in three revolving series on the whorls of the teleoconch and five series on the body whorl. The columella is three-plaited with the upper plait largest. The lip is sometimes lirate within. The peripheral groove becomes in this species either obsolete or indicated by a slight angle. The length of the shell varies between 19 mm and 67 mm. Distribution This marine species occurs in the Indo-W Pacific (Red Sea, Tanzania, Madagascar, Mauritius, Mascarene Basin and in South East Asia, in Vietnam and Philippines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eulimellinae
Eulimellini is a tribe of minute sea snails, marine gastropod molluscs in the family Pyramidellidae, the pyrams and their allies. Taxonomy According to Schander, Van Aartsen & Corgan (1999) there are 17 genera in the Eulimellinae. As "Eulimellinae", this taxon was previously one of eleven recognised subfamilies of the Pyramidellidae (according to the taxonomy of Ponder & Lindberg, 1997). In the taxonomy of Bouchet & Rocroi (2005), this subfamily Cingulininae was downgraded to the rank of tribe, as Eulimellini, belonging to the subfamily Turbonillinae. Genera Genera within the tribe Eulimellini include: * '' Bacteridella'' Saurin, 1959 * '' Bacteridium'' Thiele, 1929 * '' Belonidium'' Cossmann, 1893 * '' Careliopsis'' Mörch, 1875 * '' Discobasis'' Cossmann, 1888 * ''Eulimella'' Forbes & MacAndrew, 1846 - type genus of the tribe Eulimellini * ''Instarella'' Laseron, 1959 * '' Kejdonia'' Mifsud, 1999 * '' Koloonella'' Laseron, 1959 * '' Latavia'' Laseron, 1951 * '' Loxopt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclostremellinae
Cyclostremellini is a minor tribe, a taxonomic grouping, of minute sea snails, marine gastropod mollusks or micromollusks, in the family Pyramidellidae, the pyrams and their allies. Taxonomy Cyclostremellinae has been a subfamily one of eleven recognised in the Pyramidellidae (according to the taxonomy of Ponder & Lindberg, 1997), and according to Schander, van Aartsen and Corgan (1999) it comprises two genera, '' Cyclostremella'' and '' Pseudoskenella''. In the taxonomy of Bouchet & Rocroi (2005), this subfamily has been downgraded to the rank of tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English language, English is in the discipline of anthropology. This definition is contested, in p ... Cyclostremellini in the subfamily Odostomiinae. Genera Genera within the tribe Cyclostremellini include: * '' Cyclostremella'' Bush, 1897 ** ''Cyclostremella californica' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrysallidinae
Chrysallidinae is a taxonomic group of very small sea snails, marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. Taxonomy Chrysallidinae has been one of eleven recognized subfamilies of the gastropod family Pyramidellidae (according to the taxonomy of Ponder & Lindberg 1997). (The other 10 subfamilies are Odostomiinae, Turbonillinae, Cingulininae, Cyclostremellinae, Sayellinae, Syrnolinae, Eulimellinae, Pyramidellinae, Odostomellinae and Tiberiinae.) According to Schander, Van Aartsen & Corgan (1999) there are 47 genera in this subfamily, four additional genera may also be a part of this taxon. In the taxonomy of Bouchet & Rocroi (2005), this subfamily has been downgraded to the rank of tribe Chrysallidini in the subfamily Odostomiinae. Genera Genera in the subfamily Chrysallidinae include: * '' Chrysallida'' Carpenter, 1856 - type genus * '' Babella'' Dall, & Bartsch, 1906 * '' Bartrumella'' Laws, 1940 * '' Besla'' Dall & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyramidelloidea
Pyramidelloidea is a superfamily of mostly very small sea snails, marine gastropod mollusks and micromollusks within the clade Panpulmonata. This is a voluminous taxon: above the species level close to 400 named taxa are referred to this gastropod superfamily. Pyramidelloidea has both fossil and recent members. They live as ectoparasites on bivalve molluscs and polychaete worms, and have a sharp, piercing stylet instead of a radula. Distribution This taxon is found worldwide. Taxonomy 1999 taxonomy Taxonomy by Schander, Van Aartsen & Corgan (1999): *Superfamily Pyramidelloidea Gray, 1840 **Family Amathinidae Ponder, 1987 **Family Ebalidae Warén, 1994 - synonym: Anisocyclidae van Aartsen, 1995 **Family Odostomiidae Pelseneer, 1928 ***Subfamily Odostomiinae Pelseneer, 1928 ***Subfamily Chrysallidinae Saurin, 1958 ***Subfamily Odostomellinae Saurin, 1958 ***Subfamily Cyclostremellinae Moore, 1966 **Family Pyramidellidae J. E. Gray, 1840 ***Subfamily Pyramidellin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small dimensions. These tiny mollusks or their tiny shells are easy to overlook, as many of them are not very noticeable to the naked eye, and thus many people are not aware that they even exist. Nonetheless there are large numbers of families and vast numbers of mollusk species, in particular marine gastropods or sea snails, which are minute enough to be considered micromollusks. Considerable numbers of marine gastropod species are only about 5 or 6 mm in adult size; many others are only about 2 or 3 mm in adult size; and a few have adult shells which are as small as one millimeter or even smaller still. Despite their tiny size, many of the shells have a good deal of elaborate sculpture. A fair number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Of The Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised in 2005 by Philippe Bouchet and Jean-Pierre Rocroi is a system for the scientific classification of gastropod mollusks. (Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwater, and from saltwater.) The paper setting out this taxonomy was published in the journal ''Malacologia''. The system encompasses both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain. The Bouchet & Rocroi system was the first complete gastropod taxonomy that primarily employed the concept of clades, and was derived from research on molecular phylogenetics; in this context a clade is a "natural grouping" of organisms based upon a statistical cluster analysis. In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these animals, and used taxon ranks such as order, superorder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
