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Seguenzia Macleani
''Seguenzia'' is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae. This genus was named after Giuseppe Seguenza (1833-1889), the palaeontologist at Messina, Italy. Description The thin shell has a turbinate or subtrochoid shape. It is translucent, the outer layer very slight, somewhat nacreous in fresh specimens. There is no epidermis. The shell contains spiral carinations. The upper part of the body whorl is deeply and widely grooved. The aperture is irregular and sinuous behind. The columella is twisted and abruptly notched below. It has a small tooth-like process. The base of the shell shows a sinus. It is deeply umbilicated or imperforate. The thin operculum is oval, with a subcentral nucleus and with obsolete, numerous concentric lines. Species According to the World Register of Marine Species (WoRMS), the following species with valid name are included within the genus ''Seguenzia'' : *''Seguenzia antarctica'' Thiele, 1925 *''Seguenzia balica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Gwyn Jeffreys
John Gwyn Jeffreys FRS (18 January 1809 – 21 January 1885) was a British conchologist and malacologist. Biography John Gwyn Jeffreys was born on 18 January 1809, at Swansea, Wales. He was the eldest son of J. Jeffreys of Fynone, Glamorgan. Jeffreys was educated in Swansea at the Bishop Gore School (Swansea Grammar School). From the age of seventeen, he was an apprentice to one of the principal solicitors of Swansea, before going to London, where he qualified as a barrister in 1838. Jeffreys worked as a solicitor in Swansea until 1856, when he was called to the bar in London. But his greater passion was for conchology. He was not satisfied simply to form a collection, but was interested in all aspects of the biology of molluscs. On 2 April 1840 he became a Fellow of the Royal Society. On 21 June that year he married Ann Nevill at Llangennech. They had a son and four daughters; and were the grandparents of the physicist, Henry Gwyn Jeffreys Moseley. In 1866 Jeffreys ret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Cervola
''Seguenzia cervola'' is a species of extremely small deep-water sea snail, a marine (ocean), marine gastropod mollusk in the family (biology), family Seguenziidae.Rosenberg, G. (2013). ''Seguenzia cervola'' Dall, 1919. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492451 on 2013-06-10 Description (Original description by W.H. Dall) The height of the shell attains 4.5 mm. The white shell is small and slightly depressed. It has one small, smooth nuclear Whorl (mollusc), whorl and five subsequent whorls. These are flattened a little in front of a distinct Suture (anatomy), suture. They are separated by a somewhat convex smooth fasciole from a thread-like keel above the periphery. In front of this is a wide, smooth interval. On the base of the shell are about a dozen spiral threads with wider interspaces, and very faint microscopic spiral striae are visible in all the interspaces under a lens. On the upper whorls, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Elegantissima
''Seguenzia elegantissima'' is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2012). Seguenziidae. Accessed through .... Description The size of the shell varies between 2 mm and 3 mm. Distribution This marine species occurs off the Philippines. References External links * elegantissima Gastropods described in 2006 {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Elegans
''Seguenzia elegans'' is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae. Description The size of the shell varies between 3 mm and 4.3 mm. The base is perforated or umbilicated. The fissure of the outer lip is close to the suture. The columella is produced below. The aperture is broadly truncately sinuous on the base. Distribution This species occurs in the Atlantic Ocean off the Bay of Biscay, Madeira, Bermuda; also off Brazil and Argentine Argentines (mistakenly translated Argentineans in the past; in Spanish (masculine) or (feminine)) are people identified with the country of Argentina. This connection may be residential, legal, historical or cultural. For most Argentines, s .... References * Jensen, R. H. (1997). A Checklist and Bibliography of the Marine Molluscs of Bermuda. Unp. , 547 pp * Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). ''European register of marin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Eidalima
''Seguenzia eidalima'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.Marshall, B. (2013). ''Seguenzia eidalima'' B.A. Marshall, 1991. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492376 on 2013-06-10Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS) Description The length of the shell attains 31 mm. Distribution This marine species occurs off New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st .... References External links Marshall, B. A. (1991). Mollusca Gastropoda: Seguenziidae from New Caledonia and the Loyalty Islands. In A. Crosnier & P. Bouchet (Eds) Résultats des campagne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Donaldi
''Seguenzia donaldi'' is a species of extremely small deep water sea snail, a marine (ocean), marine gastropod mollusk in the family (biology), family Seguenziidae.WoRMS (2013). ''Seguenzia donaldi'' Ladd, 1982. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492462 on 2013-06-10 References External links Encyclopedia of Life World Register of Marine Species Seguenzia, donaldi {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Dautzenbergi
''Seguenzia dautzenbergi'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.WoRMS (2013). ''Seguenzia dautzenbergi'' Schepman, 1909. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492448 on 2013-06-10 Description (Original description by M. Schepman) The height of this whitish-yellow shell attains 4¼ mm. The rather small, umbilicate shell has a spire forming a short gradated cone. The shell contains 7 whorls of which the uppermost forms the smooth nucleus, followed by about 2 whorls with a submedian keel and displaying a cancellated appearance by the intercrossing of subequal spiral and radiating riblets. The other whorls have each 3 spirals, of which the uppermost runs at a little distance from the suture. The next one is the strongest. It renders the whorls carinate about halfway, and a third which seems to run just in the rather conspicuous suture. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Dabfari
''Seguenzia dabfari'' is a species of sea snail, a marine gastropod mollusk in the family Seguenziidae Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2012). Seguenziidae. Accessed through .... Description The size of the shell varies between 2 mm and 3 mm. Distribution This marine species occurs off the Philippines. References External links * dabfari Gastropods described in 2006 {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mattheus Marinus Schepman
Mattheus Marinus Schepman (17 August 1847 – 19 November 1919) was a Dutch people, Dutch malacologist. He was one of the foremost collectors of mollusc shells in the Netherlands, and was also high on the overall list of European collectors. Dutch collectors developed an interest in natural history specimens that were collected on worldwide expeditions since the 16th century. An interest in conchology led to numerous shell publications. In 1934 the Nederlandse Malacologische Vereniging (Netherlands Malacological Society) was founded. In commemoration of its 75th anniversary, a book honoring in detail the work of Mattheus Schepman was published. His research Schepman was both a collector and a methodical scientist, which combination "made his collection of great value to the entire malacological community." He was given the opportunity to study a collection by Max Carl Wilhelm Weber, Director of the Zoological Museum Amsterdam, Zoölogisch Museum Amsterdam (ZMA). Many of the speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Costulifera
''Seguenzia costulifera'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.WoRMS (2013). ''Seguenzia costulifera''. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492447 on 2013-06-10 Description (Original description by M. Schepman) The height of the yellowish white shell attains 5 mm. The rather small shell has a conoidal shape, with a high spire and convex base. It is scalar and rimate. It contains about 7 whorls of which the upper one forms the smooth, bulbous nucleus, followed by 2 whorls, which have a strong median keel and traces of a third one below the suture. These lirations become more conspicuous on the lower whorls, which have the median keel, another one just below the suture and in some parts traces of a third one, running entirely or partly in the deep suture. Moreover, the whole shell is covered with microscopic, close-set, spiral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Conopia
''Seguenzia conopia'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.Marshall, B. (2013). ''Seguenzia conopia'' B.A. Marshall, 1983. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492383 on 2013-06-10 Description The height of this translucent, nacreous, white shell attains 3.7 mm. Distribution This marine species occurs off New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 List of islands of New Zealand, smaller islands. It is the ... in the Tasman Basin at a depth of about 1,800 m. References conopia Gastropods described in 1983 {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenzia Compta
''Seguenzia compta'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae. Description The translucent and nacreous white shell is usually up to 6.8 mm wide and 6.5 mm high. Distribution It occurs off New Zealand in the Bounty Trough The Bounty Trough is a major submerged feature, a bathymetric depression, of the oceanography of the southwest Pacific Ocean. It is located off the east coast of New Zealand's South Island. It is named after the Bounty Islands near the Eastern end ... at a depth of 1,386 m. References External links Encyclopedia of LifeWorld Register of Marine Species compta Gastropods described in 1983 {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
