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Asthenotoma Festiva
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...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] |
Asthenotoma Lamothei
''Asthenotoma lamothei'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.WoRMS (2015). Asthenotoma lamothei (Dautzenberg, 1910). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=433073 on 8 February 2016 Description The size of the shell varies between 6 mm and 14 mm. The shell has a white color turning to light fawn at the top of the spire. (Original description, translated from French into English) The solid shell has a fusiform shape. It consists of one turreted and elongated, conical spirewith 7 1/2 barely convex whorls. The first two (embryonic) are smooth and shiny, the other grated with decurrent spiral striae (5 or 6 on the penultimate whorl and about fifteen on the last) and by well marked growth lines, strongly arched in the middle of the upper striae on top of the last. The aperture is fairly narrow, not reaching half the total height of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drilliola Emendata
''Drilliola emendata'' is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae. Description The brown shell grows to a length of 9 mm. The whorls show three cingulae and two lirae. The body whorl is spirally multicingulate and longitudinally lirulate. The suture is slightly but distinctly incised. The aperture is white within. The siphonal canal is short and wide. The sinus is wide between the first and second carina. Distribution This species occurs in the Mediterranean Sea off Greece and Sicily (man) it, Siciliana (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = Ethnicity , demographics1_footnotes = , demographi .... References * Nordsieck F., 1971: ''Kontinentale und abyssische Meeresmollusken des Jonischen Meeres'' ; Archiv für Molluskenkunde 101: 187–190 * Bouchet, P. & Warén, A., 1980. ''Revision of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drilliola
''Drilliola'' is a genus of sea snails, marine gastropod mollusks in the family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ... Borsoniidae, the cone snails and their allies. Species Species within the genus ''Drilliola'' include: * '' Drilliola annosa'' * '' Drilliola antarctica'' * '' Drilliola barnsi'' Poppe & Tagaro, 2021 * '' Drilliola basteroti'' * '' Drilliola consobrina'' * '' Drilliola crispata'' (De Cristofori & Jan, 1832) * '' Drilliola difficilis'' (E. A. Smith, 1879) * '' Drilliola elegantula'' de Boury, 1899 *'' Drilliola emendata'' * '' Drilliola estotiensis'' * '' Drilliola exquisita'' Poppe & Tagaro, 2021 * '' Drilliola labradorae'' Poppe & Tagaro, 2021 * '' Drilliola loprestiana'' * '' Drilliola mactanensis'' Poppe & Tagaro, 2021 * '' Drill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Vulcani
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Tuberculata
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Texta
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Pupa
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Praepannus
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Pannus
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Ornata
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asthenotoma Newtoni
''Asthenotoma'' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.Bouchet, P. (1970). Asthenotoma. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=224458 on 2016-02-08 Description This genus, almost entirely represented by extinct species, is of slender form and elevated, evenly and gradually acuminate spire, conspicuous development of the spiral lyrae and short aperture. It should evidently be considered especially with '' Trypanotoma'' and allies, but it is somewhat of an annectant form, as the American species at least have true ribbing on the nepionic whorls which becomes completely lost on the larger volutions of the shell. It is therefore one of those puzzling exceptions which render an arrangement of the genera in a dichotomous table so difficult and unsatisfactory. The embryo in the type, ''Pleurotoma basteroti'' Desm., of the European Miocene, is said by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
