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Vasum Flindersi
''Vasum'', common name the vase snails or vase shells, is a genus of mostly rather large predatory sea snails, marine gastropod mollusks within the family Turbinellidae.Bouchet, P. (2011). Vasum Röding, 1798. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=205505 on 15 April 2012 Shell description Shells of species in this genus are usually somewhat large, and are usually very thick and heavy. They are often vase-shaped, in the sense that the shell of most of the species is more or less widely conical. The shells have a thick periostracum, a low spires, and 2, 3 or 4 plaits on the columella. Species Species within the genus ''Vasum'' include: * ''Vasum armatum'' (Broderip, 1833) * '' Vasum caestus'' (Broderip, 1833) * '' Vasum capitellum'' (Linnaeus, 1758) * ''Vasum cassiforme'' (Kiener, 1840) * '' Vasum ceramicum'' (Linnaeus, 1758) * '' Vasum globulus'' (Lamarck, 1816) * '' Vasum lactisfloris'' Ferrario, 1983 * '' Va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasum Rhinoceras
''Vasum rhinoceros'', common name the rhinoceros vase snail or rhinoceros vase shell, is a species of large predatory sea snail, a marine gastropod mollusk within the family Turbinellidae.Rosenberg, G. (2011). Vasum rhinoceros (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=211102 on 2011-12-14 ;Subspecies: * ''Vasum rhinoceros attolinoi'' T. Cossignani, 2017 * ''Vasum rhinoceros rhinoceros'' (Gmelin, 1791) Description The length of the shell: up to 90 mm, similar to ''Vasum turbinellus'', in shape, but more rosy pink with light brown patches. The parietal wall is yellow-brown.The columella is wide, orange pink, with only three folds and large nodules on the shoulder. (Richmond, 1997). Distribution This species occurs in the Western Indian Ocean off Tanzania and Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 ... [...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] |
Vasum Cassiforme
''Vasum cassiforme'', common name the helmet vase, is a species of medium to large sea snail, a marine gastropod mollusk in the family Turbinellidae. Distribution ''Vasum cassiforme'' lives in the southeastern and northeastern littoral of Brazil,Conquiliologistas do Brasil website. URL: http://www.conchasbrasil.org.br/english/conchology/descricao.asp?id=270. Accessed 29 June 2009. including Abrolhos and the brazilian states of Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia and Espírito Santo. Shell description The maximum reported size of this species shell is 114.9 mm. ''Vasum cassiforme'' has a large, thick and heavy shell, presenting 8 whorls. One of its most striking characteristics is its rich ornamentation, with foliated cords and spines over 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasum Capitellum
''Vasum capitellum'', common name the helmet vase, is a species of medium to large sea snail, a marine gastropod mollusk in the family Turbinellidae. MolluscaBase eds. (2023). MolluscaBase. Vasum capitellum (Linnaeus, 1758). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=533593 on 2023-01-28 Shell description The length of the shell varies between 33 mm and 79.6 mm. Distribution This marine species occurs in the Caribbean Sea. Fossils have been found in Quaternary strata of the Dominican Republic (age range: 2.588 to 0.012 Ma) References * A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. External linksLinnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasum Caestus
''Vasum caestus'', common name the helmet vase, is a species of medium to large sea snail, a marine gastropod mollusk in the family Turbinellidae Turbinellidae are a family of sea snails, marine gastropod mollusks in the clade Neogastropoda. Members of this family are predators. Distribution Species in this family are found worldwide, mostly in tropical shallow waters but some in deep wat .... MolluscaBase eds. (2023). MolluscaBase. Vasum caestus (Broderip, 1833). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=575609 on 2023-01-26 Distribution This marine species occurs in the Caribbean Sea (Florida, West Indies) and in the Pacific Ocean (Mexico, Panama, Ecuador, Galapagos Islands). Shell description The length of the shell varies between 57 mm and 135 mm. References * Keen, A. M. (1971). Sea Shells of Tropical West America. Marine mollusks from Baja California to Peru. ed. 2. Stanford University Press. xv, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasum Armatum
''Vasum'', common name the vase snails or vase shells, is a genus of mostly rather large predatory sea snails, marine gastropod mollusks within the family Turbinellidae.Bouchet, P. (2011). Vasum Röding, 1798. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=205505 on 15 April 2012 Shell description Shells of species in this genus are usually somewhat large, and are usually very thick and heavy. They are often vase-shaped, in the sense that the shell of most of the species is more or less widely conical. The shells have a thick periostracum, a low spires, and 2, 3 or 4 plaits on the columella. Species Species within the genus ''Vasum'' include: * '' Vasum armatum'' (Broderip, 1833) * '' Vasum caestus'' (Broderip, 1833) * '' Vasum capitellum'' (Linnaeus, 1758) * ''Vasum cassiforme'' (Kiener, 1840) * '' Vasum ceramicum'' (Linnaeus, 1758) * '' Vasum globulus'' (Lamarck, 1816) * '' Vasum lactisfloris'' Ferrario, 1983 * '' V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columella (gastropod)
The columella (meaning "little column") or (in older texts) pillar is a central anatomical feature of a coiled snail shell, a gastropod shell. The columella is often only clearly visible as a structure when the shell is broken, sliced in half vertically, or viewed as an X-ray image. The columella runs from the apex of the shell to the midpoint of the undersurface of the shell, or the tip of the siphonal canal in those shells which have a siphonal canal. If a snail shell is visualized as a cone of shelly material which is wrapped around a central axis, then the columella more or less coincides spatially with the central axis of the shell. In the case of shells that have an umbilicus, the columella is a hollow structure. The columella of some groups of gastropod shells can have a number of plications or folds (the columellar fold, plaits or plicae), which are usually visible when looking to the inner lip into the aperture of the shell. These folds can be wide or narrow, prominent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plait (gastropod)
A plait is an anatomical feature which is present the shells of some snails, or gastropods. This sculpture occurs often in the shells of marine gastropod mollusks in the clade Neogastropoda, but it is also found in some pulmonate land snails. Plaits are folds on the columella (also known as the pillar or axis) at the center of the shell. The columella (meaning little column) is the central structure around which the whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). Whorls in nature File:Photograph and axial plane floral ...s of a coiled gastropod shell are coiled. The presence or absence of plaits, and the number of plaits, are characteristics used in the description of many gastropod molluscs, often enabling similar species to be separated and identified correctly. References * Powell A W B, ''New Zealand Mollusca'', William C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spire (mollusc)
A spire is a part of the coiled shell of molluscs. The spire consists of all of the whorls except for the body whorl. Each spire whorl represents a rotation of 360°. A spire is part of the shell of a snail, a gastropod mollusc, a gastropod shell, and also the whorls of the shell in ammonites, which are fossil shelled cephalopods. In textbook illustrations of gastropod shells, the tradition (with a few exceptions) is to show most shells with the spire uppermost on the page. The spire, when it is not damaged or eroded, includes the protoconch (also called the nuclear whorls or the larval shell), and most of the subsequent teleoconch whorls (also called the postnuclear whorls), which gradually increase in area as they are formed. Thus the spire in most gastropods is pointed, the tip being known as the "apex". The word "spire" is used, in an analogy to a church spire or rock spire, a high, thin, pinnacle. The "spire angle" is the angle, as seen from the apex, at which a spire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periostracum
The periostracum ( ) is a thin, organic coating (or "skin") that is the outermost layer of the shell of many shelled animals, including molluscs and brachiopods. Among molluscs, it is primarily seen in snails and clams, i.e. in gastropods and bivalves, but it is also found in cephalopods such as ''Allonautilus scrobiculatus''. The periostracum is an integral part of the shell, and it forms as the shell forms, along with the other shell layers. The periostracum is used to protect the organism from corrosion. The periostracum is visible as the outer layer of the shell of many molluscan species from terrestrial, freshwater, and marine habitats, and may be seen in land snails, river mussels, and other kinds of freshwater bivalves, as well as in many kinds of marine shelled molluscs. The word ''periostracum'' means "around the shell", meaning that the periostracum is wrapped around what is usually the more calcareous part of the shell. Technically, the calcareous part of the shel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gas ... [...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, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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