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Cystiscinae
Cystiscinae are a taxonomic subfamily of minute sea snails. These are marine gastropod mollusks or micromollusks in the family Cystiscidae, and the clade Neogastropoda. Diagnosis Shell minute to small, white; spire immersed to low; surface smooth or axially costate; lip thickened, smooth or denticulate; external varix A varix (pl. varices) is an abnormally dilated vessel with a tortuous course. Varices usually occur in the venous system, but may also occur in arterial or lymphatic vessels. Examples of varices include: * Varicose veins, large tortuous veins usua ... absent; siphonal notch absent; posterior notch absent; columella multiplicate, with combined total of usually 2 to 8 plications plus parietal lirae; internal Whorl (mollusc), whorls cystiscid type. Animal Mantle (mollusc), mantle smooth, at least partially extending over external shell surface. Internal anatomy unknown. Genera Genera within the subfamily Cystiscinae are as follows: *''Crithe'' Augustus Addison Go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscidae
Cystiscidae is a taxonomic family of minute sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costate; the spire is flat to immersed, or low to tall; the protoconch is paucispiral; the lip is thickened, smooth or denticulate; an external varix is present or absent; a siphonal notch is present or absent; a posterior notch is present or absent; the columella is multiplicate, internal whorls cystiscid or modified cystiscid type. Mantle cavity with monopectinate ctenidium and bipectinate osphradium. Proboscis pleurembolic; jaws absent; typical radular sac present. Taxonomy The family was erected by William Stimpson for a single included species based on unusual features of the head and radula. Subsequent authors included this group in the family Marginellidae. Coan (1965) recognized this group as a subfamily, but he did not include such gener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ticofurcilla
''Ticofurcilla'' is a genus of very small sea snails, marine gastropod mollusks or micromollusks in the family Cystiscidae Cystiscidae is a taxonomic family of minute sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costate; .... Species Species within the genus ''Ticofurcilla'' include: * '' Ticofurcilla tica'' Espinosa & Ortea, 2002 References Monotypic gastropod genera {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ticocystiscus
''Ticocystiscus'' is a genus of minute sea snail, a marine gastropod mollusc in the family Cystiscidae Cystiscidae is a taxonomic family of minute sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costate; .... This genus, and indeed all the genera in the family, were previously and sometimes still are, placed in the family Marginellidae. Species * '' Ticocystiscus iberia'' Espinosa & Ortea, 2002 - type species References Cystiscidae {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pachybathron
''Pachybathron'' is a genus of very small sea snails, marine gastropod mollusk or micromollusk in the subfamily Cystiscinae of the family Cystiscidae. Species Species within the genus ''Pachybathron'' include: *'' Pachybathron cassidiforme'' Gaskoin, 1853 *'' Pachybathron cypraeoides'' ( Adams, 1845) * '' Pachybathron guadeloupense'' Boyer & Lamy, 2014 *''Pachybathron kienerianum'' (Petit de la Saussaye Sauveur Abel Aubert Petit de la Saussaye (1792–1870)Coan E. V. & Kabat A. R. (2017). ''2,400 years of malacology, 14th ed.'', 1,443 pp. + 110 pp. nnex 1 – Book Collations+ 65 pp. nnex 2 – Küster Collation 51 pp. nnex 3 – Journal Coll ..., 1838) *'' Pachybathron olssoni'' Wakefield, Boyer & McCleery, 2002 *'' Pachybathron tayrona'' Díaz & Velásquez, 1987 Synonym: * ''Pachybathron guadeloupensis'' Boyer & Lamy, 2014: synonym of ''Pachybathron guadeloupense'' Boyer & Lamy, 2014 (wrong gender agreement of specific epithet) *''Pachybathron marginelloideum'' Gaskoin, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cystiscus
Cystiscus is a taxonomic genus of minute sea snails, marine gastropod mollusks or micromollusks. This genus was placed in the family Cystiscidae by Coovert and Coovert, 1995. Previously the genus was in the family Marginellidae, where it is still placed by many other malacologists. Diagnosis Shell minute to small, white, hyaline; spire immersed to low; lip thickened, smooth or weakly denticulate; external varix absent; siphonal notch absent; posterior notch absent; lacking collabral parietal callus ridge; columella multiplicate, with combined usually 2 to 8 plications plus parietal lirae, first plication usually strong and raised. Mantle smooth, at least partially extending over external shell surface. Shell description Shell minute to small (adult length ). Color white, hyaline; surface smooth, glossy. Shape usually elliptic, obovate, or subtriangular; weakly shouldered. Spire completely immersed to low. Aperture narrow to broad, usually wider anteriorly. Lip slightly to d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Christian Friedrich Schumacher
Heinrich Christian Friedrich Schumacher (15 November 1757 in Glückstadt, Holstein – 9 December 1830) was a Danish surgeon, botanist and professor of anatomy at the University of Copenhagen. Schumacher carried out significant research work in malacology, in other words on molluscs, and described several taxa. Life Early years (1757-1778) He was born to Joachim Christian Schumacher, a sergeant in the infantry of the Duchy of Schleswig, and his wife, Caroline Magdalene in Glückstadt in present-day Germany. In spite of his family's limited means, he received a good upbringing, and was sent to grammar school in Rendsburg. After confirmation became the apprentice of the regiment surgeon, Mehl, a learned and skilled man, who gave his eager student a thorough introduction to both medicine and botany, thereby waking Schumacher's natural gift for science. By 1773, at the age of 16, his keen efforts got him appointed as a military surgeon with his father's battalion in the army statione ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Persicula
''Persicula'' is a taxonomic genus of minute to small predatory sea snails, marine gastropod mollusks. It includes several species which are micromollusks.Persicula Schumacher, 1817. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137882 on 2010-12-05 This genus is placed in the family Cystiscidae. It was previously in the family Marginellidae the margin snails. Both families are within the order Neogastropoda. (Note: Gastropod taxonomy has been in flux for more than half a century, and this is especially true currently, because of new research in molecular phylogeny. Because of all the ongoing changes, different reliable sources can yield very different classifications.) Habitat Species in this genus live from the intertidal zone to 370 m in depth. Shell description In this genus the shell is minute to small. It can be uniformly c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marginocystiscus
''Marginocystiscus'' is an extinct genus of sea snails, marine gastropod mollusks, in the family Cystiscidae.MolluscaBase (2018). ''Marginocystiscus'' Landau, da Silva & Heitz, 2016 †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=886166 on 2019-01-05Landau B., da Silva C.M. & Heitz A. (2016). Systematics of the gastropods of the Lower–Middle Miocene Cantaure Formation, Paraguaná Formation, Paraguaná peninsula, Venezuela. Bulletins of American Paleontology. 389-390: 1-581. Species Species within the genus ''Marginocystiscus'' include: *† A dagger, obelisk, or obelus is a typographical mark that usually indicates a footnote if an asterisk has already been used. The symbol is also used to indicate death (of people) or extinction (of species). It is one of the modern descendan ...'' Marginocystiscus subtilplicatus'' Landau, da Silva & Heitz, 2016 References Gastropods described in 2016 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinction
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 recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intelcystiscus
''Intelcystiscus'' is a genus of minute sea snail, a marine gastropod mollusc or micromollusc in the family Cystiscidae Cystiscidae is a taxonomic family of minute sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costate; .... Species Species within the genus ''Intelcystiscus'' include: *'' Intelcystiscus coyi'' Espinosa & Ortea, 2002 *'' Intelcystiscus gordonmoorei'' Ortea & Espinosa, 2001 *'' Intelcystiscus rancholunensis'' Espinosa & Ortea, 2006 *'' Intelcystiscus teresacarrenoae'' Ortea & Espinosa, 2016 *'' Intelcystiscus yemayae'' Espinosa & Ortea, 2003 References Cystiscidae {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inbiocystiscus
''Inbiocystiscus'' is a genus of minute sea snail, a marine gastropod mollusc in the family Cystiscidae Cystiscidae is a taxonomic family of minute sea snails, marine gastropod mollusks or micromollusks. Description The shell is minute to large, either white, uniformly colored, or patterned; the surface is smooth, sculptured, or axially costate; .... Species Species within the genus ''Inbiocystiscus'' include: *'' Inbiocystiscus faroi'' Ortea & Espinosa, 2006 *'' Inbiocystiscus gamezi'' Ortea & Espinosa, 2001 *'' Inbiocystiscus tanialeonae'' Ortea & Espinosa, 2016 *'' Inbiocystiscus triplicatus'' Espinosa & Ortea, 2007 References Cystiscidae {{Cystiscidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William John Swainson
William John Swainson FLS, FRS (8 October 1789 – 6 December 1855), was an English ornithologist, malacologist, conchologist, entomologist and artist. Life Swainson was born in Dover Place, St Mary Newington, London, the eldest son of John Timothy Swainson the Second (1756–1824), an original fellow of the Linnean Society. He was cousin of the amateur botanist Isaac Swainson.Etymologisches Worterbuch der botanischen Pflanzennamen by H. Genaust. Review by Paul A. Fryxell ''Taxon'', Vol. 38(2), 245–246 (1989). His father's family originated in Lancashire, and both grandfather and father held high posts in Her Majesty's Customs, the father becoming Collector at Liverpool. William, whose formal education was curtailed because of an impediment in his speech, joined the Liverpool Customs as a junior clerk at the age of 14."William Swainson F.R.S, F.L.S., Naturalist and Artist: Diaries 1808–1838: Sicily, Malta, Greece, Italy and Brazil." G .M. Swainson, Palmerston, NZ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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