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Vetulonia (gastropod)
''Vetulonia'' is a genus of sea snails, marine (ocean), marine gastropod mollusks, unassigned in the Taxonomic rank, superfamily Seguenzioidea.WoRMS (2009). ''Vetulonia'' Dall, 1913. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2009) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137864 on 27 March 2013 Description (Original description) The small shell is turbiniform, thin and umbilicated. It shows radiating ribs crossing spiral threads . The peristome is interrupted by the body whorl . The outer Lip (gastropod), lip in the completely adult is reflected and somewhat thickened. The Aperture (mollusc), aperture is unarmed.William Healey Dall, Dall W. H. (1913). "A new genus of Trochidae". ''The Nautilus (journal), The Nautilus'' 2786 Species Species within the genus ''Vetulonia'' include: * ''Vetulonia densilirata'' Dall, 1927 * ''Vetulonia galapagana'' Dall, 1913 * ''Vetulonia giacobbei'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Healey Dall
William Healey Dall (August 21, 1845 – March 27, 1927) was an American naturalist, a prominent malacologist, and one of the earliest scientific explorers of interior Alaska. He described many mollusks of the Pacific Northwest of America, and was for many years America's preeminent authority on living and fossil mollusks. Dall also made substantial contributions to ornithology, zoology, physical and cultural anthropology, oceanography and paleontology. In addition he carried out meteorological observations in Alaska for the Smithsonian Institution. Biography Early life Dall was born in Boston, Massachusetts. His father Charles Henry Appleton Dall, (1816–86), a Unitarian minister, moved in 1855 to India as a missionary. His family however stayed in Massachusetts, where Dall's mother Caroline Wells Healey was a teacher, transcendentalist, reformer, and pioneer feminist. In 1862, Dall's father, on one of his few brief visits home, brought his son in contact with some natu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc. The term ''aperture'' is used for the main opening in gastropod shells, scaphopod shells, and also for ''Nautilus'' and ammonite shells. The word is not used to describe bivalve shells, where a natural opening between the two shell valves in the closed position is usually called a ''gape''. Scaphopod shells are tubular, and thus they have two openings: a main anterior aperture and a smaller posterior aperture. As well as the aperture, some gastropod shells have additional openings in their shells for respiration; this is the case in some Fissurellidae (keyhole limpets) where the central smaller opening at the apex of the shell is called an orifice, and in the Haliotidae (abalones) where the row of respiratory openings in the shell are also called orifices. In gastropods In some prosobranch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Phalcata
''Vetulonia phalcata'' is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.MolluscaBase (2018). ''Vetulonia phalcata'' Warén & Bouchet, 1993. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=758202 on 2018-12-28Warén A. & Bouchet P. (1993) New records, species, genera, and a new family of gastropods from hydrothermal vents and hydrocarbon seeps. Zoologica Scripta 22: 1-90. Distribution This species occurs in North Fiji Basin The North Fiji Basin (NFB) is an oceanic basin west of Fiji in the south-west Pacific Ocean. It is an actively spreading back-arc basin delimited by the Fiji islands to the east, the inactive Vitiaz Trench to the north, the Vanuatu/New Hebrides .... References phalcata {{Seguenzioidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Paucivaricosa
''Vetulonia paucivaricosa'' is a species of sea snail, a marine gastropod mollusk in the superfamily Seguenzioidea. Description The shell grows to a height of 3.8 mm. (Described as ''Trochus cancellatus'') The rather thin shell forms a depressed cone, opaque, and lustreless. The sculpture consists of oblique laminar ribs in the line of growth, which are crossed by as many but slighter spiral striae. There are about 20 ribs and striae on the body whorl. This sculpture covers the base, but the striae are wanting on the apex. The colour of the shell is pale yellowish-brown. The spire is rather depressed. The shell contains 5-6 convex whorls. The body whorl occupies three fifths of the shell. The apex is regular and compressed. The aperture is more round than oval, angulated above and below on the inner side. The outer lip is somewhat expanded and thickened. The inner lip is nearly straight, attached to the columella below the periphery. The umbilicus is rather narrow, wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Parajeffreysi
''Vetulonia parajeffreysi'' is a species of sea snail, a marine 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. T ... mollusk, unassigned in the superfamily Seguenzioidea. Description The shell grows to a height of 3 mm. Distribution This species occurs in the Gulf of Mexico and in the Atlantic Ocean off Brazil, found at depths between 730 m and 1600 m. References * Absalão R.S. & Pimenta A.D. (2005). ''New records and new species of Vetulonia Dall, 1913 and Brookula Iredale, 1912 from Brazil (Gastropoda, Trochidae).'' The Veliger 47(3): 193–201 * Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. ''Gastropoda (Mollusca) of the Gulf of Mexico,'' Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Giacobbei
''Vetulonia giacobbei'' is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ... Seguenzioidea.MolluscaBase (2018). ''Vetulonia giacobbei'' Renda & Micali, 2016. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=883996 on 2018-12-28Renda W. & Micali P. (2016). Vetulonia giacobbei n. sp. from South Tyrrhenian Sea (Gastropoda, Seguenzioidea). Bollettino Malacologico. 52: 56-59. Distribution This species occurs in Tyrrhenian Sea. References giacobbei {{Seguenzioidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Galapagana
''Vetulonia galapagana'' is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.MolluscaBase (2018). ''Vetulonia galapagana'' Dall, 1913. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=871168 on 2018-12-28 Description THe length of the shell attains 2.2 mm; its maximum diameter 3.4 mm. (Original description) The small, white shell consists of four moderately convex whorls (the protoconch defective). The suture is distinct. The spiral sculpture between the sutures consists of seven or eight close-set flattish threads, crossed by (on the body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b ...) seventeen narrow, slightly elevated, laminate ribs which become obsolete to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vetulonia Densilirata
''Vetulonia densilirata'' is a species of sea snail, a marine gastropod mollusk, unassigned in the superfamily Seguenzioidea.Rosenberg, G. (2012). ''Vetulonia densilirata'' Dall, 1927. Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=533597 on 2013-04-14 Description The length of the shell attains 2 mm; its diameter: 3 mm. (Original description) the shell resembles ''Vetulonia paucivaricosa'' (Dautzenberg, 1889) but with a depressed, almost flat spire. There are about 35 axial lamellae on the body whorl The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the b .... The spiral sculpture is finer and closer, and the aperture is almost circular with a continuous margin. Distribution This marine species occurs off Florida, US ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Nautilus (journal)
''The Nautilus'' is a peer-reviewed scientific journal covering research in malacology. Hence its scope includes all aspects of the biology, ecology, and systematics of mollusks."THE NAUTILUS A Quarterly Devoted to Malacology" . accessed 19 April 2011. The first two volumes were published by shell trader William D. Averell (1853-1928) under the name ''The Conchologists’ Exchange''.Leal J. H. (2006). "Celebrating a long life: The Nautilus turns 120!". ''The Nautilus'' 120(1): 1-7 From 1958 to 1972, the subtitle of ''The Nautilus'' was "The Pilsbry Quarter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lip (gastropod)
In the shell of gastropod mollusks (a snail shell), the lip is the free margin of the peristome (synonym: peritreme) or aperture (the opening) of the gastropod shell. In dextral (right-handed) shells (most snail shells are right-handed), the right side or outer side of the aperture is known as the outer lip (''labrum''). The left side of the aperture is known as the inner lip or columellar lip (''labium'') if there is a pronounced lip there. In those species where there is no pronounced lip, the part of the body whorl that adjoins the aperture is known as the parietal wall. The outer lip is usually thin and sharp in immature shells, and in some adults (e.g. the land snails ''Helicella'' and '' Bulimulus''). However, in some other land snails and in many marine species the outer lip is ''thickened'' (also called ''callused''), or ''reflected'' (turned outwards). In some other marine species it is curled inwards (''inflected''), as in the cowries such as ''Cypraea''. It can also be ... [...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] |
Body Whorl
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk. In gastropods In gastropods, the body whorl, or last whorl, is the most recently formed and largest whorl (or revolution) of a spiral or helical shell, terminating in the aperture. It is called the "body whorl" because most of the body of the soft parts of the animal fits into this whorl. The proportional size of the body whorl in gastropod shells differs greatly according to the actual shell morphology. For shells in which the rate of whorl expansion of each revolution around the axis is very high, the aperture and the body whorl are large, and the shell tends to be low spired. The shell of the abalone is a good example of this kind of shell. The opposite tendency can sometimes create a high spire with very little whorl increase per revolution. In these instances, e.g. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
