|
Olivellidae
Olivellinae, are a subfamily of small predatory sea snails with smooth, shiny, elongated oval-shaped shells, in the family Olividae. The shells sometimes show muted but attractive colors, and may have some patterning.MolluscaBase eds. (2020). MolluscaBase. Olivellinae Troschel, 1869. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=225405 on 2020-03-18 These animals are marine gastropod molluscs in the superfamily Olivoidea, within the order Neogastropoda according to the taxonomy of Bouchet and Rocroi. Distribution ''Olivella'' snails are found worldwide, but mostly Ecuador in subtropical and tropical seas and oceans. Habitat and habit These snails are found on sandy substrates intertidally and subtidally. These snails are all carnivorous sand-burrowers. Shell description The shells are basically oval and cylindrical in shape. They have a well-developed stepped spire. ''Olivella'' shells have a siphonal notch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olivoidea
Olivoidea is a taxonomic superfamily of minute to medium-large predatory sea snails, marine gastropod mollusks in the order Neogastropoda.MolluscaBase (2018). Olivoidea Latreille, 1825. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=411805 on 2018-09-23 Taxonomy According to the Revised Classification, Nomenclator and Typification of Gastropod Families (2017), the superfamily Olivoidea has five families: *Family Olividae Latreille, 1825 – Olivellidae is the subfamily Olivellinae in Olividae. *Family Ancillariidae The Ancillariidae is a taxonomic family of sea snails, marine gastropod mollusc Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, ... Swainson, 1840 *Family Bellolividae Kantor, Fedosov, Puillandre, Bonillo & Bouchet, 2017 *Family Benthobiidae Kantor, Fedosov, Puillandre, Bonillo & Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olivella Biplicata
''Callianax biplicata'', common names the purple dwarf olive, purple olive shell, or purple olivella is a species of small predatory sea snail, a marine gastropod mollusc in the family Olividae, the olives.MolluscaBase eds. (2021). MolluscaBase. Callianax biplicata (G. B. Sowerby I, 1825). Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=1424883 on 2021-11-04 Distribution ''Callianax biplicata'' snails are found in the Eastern Pacific Ocean coasts from British Columbia, Canada to Baja California, Mexico. Habitat This species is common on sandy substrates intertidally and subtidally, in bays and the outer coast.Dave Cowles. 2005''Olivella biplicata (Sowerby, 1825)''. accessed 22 November 2008. Life habits These snails are carnivorous or omnivorous sand-burrowers. Shell description This shell of this species is quite solid, and large for an ''Olivella'', with adult shells ranging from 20 mm to 27 mm in length, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variable Dwarf Olive
''Olivella mutica'', common name the variable dwarf olive, is a species of marine gastropod mollusc, commonly eaten by some starfish. They are distributed in the West Atlantic, from the coast of Brazil through the Gulf of Mexico to around Chesapeake Bay in the United States. In Florida, they are known to spawn Spawn or spawning may refer to: * Spawning, the eggs and sperm of aquatic animals Arts, entertainment and media * Spawn (character), a fictional character in the comic series of the same name and in the associated franchise ** ''Spawn: Armageddon' ... for only one month early in the year. References mutica Gastropods described in 1822 {{Olividae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Of The Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised in 2005 by Philippe Bouchet and Jean-Pierre Rocroi is a system for the scientific classification of gastropod mollusks (Gastropods are a taxonomic class of animals which consists of snails and slugs of every kind, from the land, from freshwater, and from saltwater). The paper setting out this taxonomy was published in the journal '' Malacologia''. The system encompasses both living and extinct groups, as well as some fossils whose classification as gastropods is uncertain. The Bouchet & Rocroi system was the first complete gastropod taxonomy that primarily employed the concept of clades, and was derived from research on molecular phylogenetics; in this context a clade is a "natural grouping" of organisms based upon a statistical cluster analysis. In contrast, most of the previous overall taxonomic schemes for gastropods relied on morphological features to classify these animals, and used taxon ranks such as order, superorder ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neogastropoda
Neogastropoda is an order of aquatic snails, both freshwater and marine gastropod molluscs. Description The available fossil record of Neogastropoda is relatively complete, and supports a widely accepted evolutionary scenario of an Early Cretaceous origin of the group followed by two rapid diversification rounds in the late Cretaceous and the Paleocene. These sea snails have only one auricle, one kidney and one monopectinate gill, i.e. the gill filaments develop on only one side of the central axis. The shell has a well-developed siphonal canal. The elongated trunk-like siphon is an extensible tube, formed from a fold in the mantle. It is used to suck water into the mantle cavity. At the base of the siphon is the bipectinate (branching from a central axis) osphradium, a sensory receptacle and olfactory organ, that is more developed than the one in the Mesogastropoda. They achieved important morphological changes including e.g., the elongation of the siphonal canal, a shift ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olivellinae
Olivellinae, are a subfamily of small predatory sea snails with smooth, shiny, elongated oval-shaped shells, in the family Olividae. The shells sometimes show muted but attractive colors, and may have some patterning.MolluscaBase eds. (2020). MolluscaBase. Olivellinae Troschel, 1869. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=225405 on 2020-03-18 These animals are marine gastropod molluscs in the superfamily Olivoidea, within the order Neogastropoda according to the taxonomy of Bouchet and Rocroi. Distribution ''Olivella'' snails are found worldwide, but mostly Ecuador Ecuador, officially the Republic of Ecuador, is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. It also includes the Galápagos Province which contain ... in subtropical and tropical seas and oceans. Habitat and habit These snails are found on san ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylindrical
A cylinder () has traditionally been a Solid geometry, three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a Prism (geometry), prism with a circle as its base. A cylinder may also be defined as an infinite set, infinite curvilinear surface (mathematics), surface in various modern branches of geometry and topology. The shift in the basic meaning—solid versus surface (as in a solid ball (mathematics), ball versus sphere surface)—has created some ambiguity with terminology. The two concepts may be distinguished by referring to solid cylinders and cylindrical surfaces. In the literature the unadorned term "cylinder" could refer to either of these or to an even more specialized object, the ''right circular cylinder''. Types The definitions and results in this section are taken from the 1913 text ''Plane and Solid Geometry'' by George A. Wentworth and David Eugene Smith . A ' is a Surface (mathematics), surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olivella (gastropod)
''Olivella'', common name the dwarf olives, is a genus of small predatory sea snails, Marine (ocean), marine gastropod molluscs in the subfamily Olivellinae of the family (biology), family Olividae, the olives. ''Olivella'' is the type genus of the family.WoRMS (2010). Olivella Swainson, 1831. 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=138274 on 2011-01-02 Description Adults in the ''Olivella'' species are usually quite small, hence the genus has the common name "dwarf olive". Species of ''Oliva'' are usually larger, but there are exceptions. The shell of ''Olivella'' usually has a keel-like twist at the anterior end of the columella. The wall above it may be concave or have deep furrows. The inner lip can sometimes show a deep callus, and in many cases this extends over the parietal wall to the end of the aperture. This callus format ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cupidoliva
''Cupidoliva'' is a genus of sea snails, marine gastropod mollusks in the family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ... Olividae. Species Species within the genus ''Cupidoliva'' include: * '' Cupidoliva adiorygma'' (Verco, 1909) * '' Cupidoliva nympha'' (A. Adams & Angas, 1864) * '' Cupidoliva solidula'' (Verco, 1909) References Olivellinae {{Olividae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callianax
''Callianax'' is a genus of small predatory sea snails, marine gastropod molluscs in the subfamily Olivellinae of the family Olividae, the olives. MolluscaBase eds. (2021). MolluscaBase. Callianax H. Adams & A. Adams, 1853. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1424881 on 2021-11-04 Description The shell is not polished. The acute spire is produced with the suture channelled. The aperture is wide and effuse in front. The callus of the inner lip is thick and defined. The columella is simple, or with a few plaits anteriorly. Species * '' Callianax alectona'' (Duclos, 1835) * ''Callianax biplicata ''Callianax biplicata'', common names the purple dwarf olive, purple olive shell, or purple olivella is a species of small predatory sea snail, a marine gastropod mollusc in the family Olividae, the olives.MolluscaBase eds. (2021). MolluscaBas ...'' (G. B. Sowerby I, 1825) * '' Callianax diegensis'' (Oldroyd, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campanian
The Campanian is the fifth of six ages of the Late Cretaceous epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series. Campanian spans the time from 83.6 (± 0.2) to 72.1 (± 0.2) million years ago. It is preceded by the Santonian and it is followed by the Maastrichtian. The Campanian was an age when a worldwide sea level rise covered many coastal areas. The morphology of some of these areas has been preserved: it is an unconformity beneath a cover of marine sedimentary rocks. Etymology The Campanian was introduced in scientific literature by Henri Coquand in 1857. It is named after the French village of Champagne in the department of Charente-Maritime. The original type locality was a series of outcrops near the village of Aubeterre-sur-Dronne in the same region. Definition The base of the Campanian Stage is defined as a place in the stratigraphic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
