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Hadroconus
''Hadroconus'' is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae. Species Species within the genus ''Hadroconus'' include: *''Hadroconus altus'' (Watson, 1879) *''Hadroconus diadematus'' Marshall, 1988 *''Hadroconus grandiosus'' Marshall, 1991 *''Hadroconus sibogae'' (Schepman, 1908) *''Hadroconus watsoni'' (Dall Dall may refer to: People * Anders Bendssøn Dall (died 1607), Danish Lutheran bishop * Bobby Dall (born 1963), American musician * Caroline Healey Dall (1822–1912), American feminist writer *Clarrie Dall (1887–1953), Australian footballer * C ..., 1927) References * Marshall B.A. (1991). ''Mollusca Gastropoda : Seguenziidae from New Caledonia and the Loyalty Islands. In A. Crosnier & P. Bouchet (Eds) Résultats des campagnes Musorstom'', vol. 7. Mémoires du Muséum National d'Histoire Naturelle, A, 150:41-109 External links Quinn J. (1987). A revision of the Seguenziacea Verrill, 1884. II. The new genera Hadroconus, Rotellenzia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadroconus Sibogae
''Hadroconus sibogae'' is a species of extremely small deep water sea snail, a marine (ocean), marine gastropod mollusk in the family (biology), family Seguenziidae.WoRMS (2013). ''Hadroconus sibogae'' (Schepman, 1908). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492408 on 2013-06-10 Description (Original description by M. Schepman) The height of the shell attains 6.5 mm . The umbilicate shell has a conical shape with concave sides, a sharp keel and a slightly convex base. It is nacreous under a thin, yellowish-white layer. The 7 Whorl (mollusc), whorls are slightly convex, especially the lower ones. The nucleus is smooth and shining. The Suture (anatomy), suture is well marked by the strong keel, which is also visible on the upper whorls. The Sculpture (mollusc), sculpture consists on the upper whorls of thin, strongly curved, radiating riblets, which are rather crowded, but much more distant on the lower who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadroconus Altus
''Hadroconus altus'' is a species of sea snail, a marine gastropod mollusc in the family Seguenziidae. Description (Original description by Watson) The height of the shell attains 8.2 mm. The small shell has an equilateral conical shape. It is flat-based, and sharply angulated. It is delicately sculptured, and nacreous under a thin, white calcareous surface. Sculpture : there are about 45 longitudinals. These are hair-like, strongly sinuated, flexuous, for they advance markedly at the periphery, where they are each ornamented by an elongated curved tubercle, and on the base they again retreat so as to form a sinus. On the earlier whorls these longitudinals are much more distinct than on the later, and each starts from a little bead, which lie close to the suture, but these beads are very feeble on the body whorl. In the intervals of the longitudinals and parallel to them are very faint growth lines. Above the carina two spirals are stronger than the rest, with a sharp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadroconus Grandiosus
''Hadroconus grandiosus'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.WoRMS (2013). ''Hadroconus grandiosus'' Marshall, 1991. Retrieved through: World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific speciali ... at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492424 on 2013-06-10Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS) Distribution This marine species occurs off New Caledonia. References * Marshall B. A. (1991) ''Mollusca Gastropoda: Seguenziidae from New Caledonia and the Loyalty Islands'', in CROSNIER A & BOUCHET P. (eds) Résultats des Campagnes MUSORSTOM, Volume 7. Mémoires du Muséum national d’Histoire nature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadroconus Watsoni
''Hadroconus watsoni'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.Rosenberg, G. (2013). ''Hadroconus watsoni'' (Dall, 1927). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492409 on 2013-06-10 Description (Original description by W.H. Dall) The height of the shell attains 5 mm. The small, white shell has a flatly conical shape, with a glassy minute nucleus of one whorl and seven subsequent whorls. The suture is closely appressed, not impressed. The whorls above the base are flat. The axial sculpture consists of many protractively flexuous extremely fine lines with wider interspaces over all the whorls. The cemented edges at the suture by their opacity look like a presutural band, but this is not reflected in the sculpture. The spiral sculpture on the spire consists of almost microscopic close striae. On the base there are about a dozen fine spir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadroconus Diadematus
''Hadroconus diadematus'' is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.WoRMS (2013). ''Hadroconus diadematus'' Marshall, 1988. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492410 on 2013-06-10 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 .... References External links Encyclopedia of LifeWorld Register of Marine Species diadematus Gastropods described in 1988 {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23116 on 2013-03-26 Distribution Species from this family occur in the Atlantic Ocean, the Pacific Ocean, the Indian Ocean and the Antarctic Ocean, mostly at bathyal and abyssal depths. Only a few species have been found at depths less than 300 m and none at intertidal depths. Description The thin, translucent, white shell has a trochiform shape. They are small or very small. Their maximum height is 22 mm. They are usually nacreous. The inner lip has often a tooth-like fold. The outer lip has characteristically one to three concave notches (except in the genus ''Guttula''). The chitinous operculum is multispiral. The rhipidoglossan r ... [...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] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below 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 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. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell. Definition Determining whether some gastropods should be called sea snails is not always easy. Some species that live in brackish water (such as certain neritids) can be listed as either freshwater snails or marine snails, and some species that live at or just above the high tide level (for example species in the genus '' Truncatella'') are sometimes considered to be sea snails and sometimes listed as land snails 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 gastropod mollusks that have shells (those without shells are known .... Anatomy Sea snails are a very large group o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine (ocean)
The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided."Ocean." ''Merriam-Webster.com Dictionary'', Merriam-Webster, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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