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Coriocella Fella
''Coriocella'' is a genus of small slug-like sea snails, marine gastropod molluscs in the family Velutinidae.Bouchet, P. (2011). Coriocella Blainville, 1824. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=456342 on 2011-06-17 Description The ear-shaped shell is extremely thin, even membranous in part and concealed in the mantle. It has a small spiral turn at the apex. The aperture is very large. The shell lacks a columella. The soft body is elliptical and much depressed. The borders of the mantle are very thin, notched in front and spreading out widely. The oval foot is very small. The head is scarcely distinct. The two short and rather thick tentacles are contractile and concealed under the shield. The eyes are situated at the base of the tentacles. Species Species within the genus ''Coriocella'' include: *'' Coriocella fella'' Er. Marcus & Ev. Marcus, 1970 * ''Coriocella herberti'' Drivas & Jay, 1990 *''Coriocella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Hibyae
''Coriocella hibyae'', common name the Hiby's coriocella or the velvet snail, is a species of sea snail, a marine gastropod mollusc in the family Velutinidae. Description Although it has a shell, the shell is hidden within folds of the mantle, and overall the creature looks more like a sea slug than a snail, but in situ its external appearance resembles that of a sponge, which makes it difficult to spot underwater. Hiby's coriocella is known from the Maldives, in the Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by th .... Its distribution range may in fact be greater than this, but as yet little is known about this species. This species can reach a maximum size of 10 cm in length. It more closely resembles a sea slug than a sea snail, and there are five digit-lik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apex (mollusc)
In anatomy, an apex (adjectival form: apical) is part of the shell of a mollusk. The apex is the pointed tip (the oldest part) of the shell of a gastropod, scaphopod, or cephalopod. The apex is used in end-blown conches. Gastropods The word "apex" is most often used to mean the tip of the spire of the shell of a gastropod. The apex is the first-formed, and therefore the oldest, part of the shell. To be more precise, the apex would usually be where the tip of the embryonic shell or protoconch is situated, if that is still present in the adult shell (often it is lost or eroded away). Coiled gastropod shells The phrase apical whorls, or protoconch, means the whorls that constitute the embryonic shell at the apex of the shell, especially when this is clearly distinguishable from the later whorls of the shell, otherwise known as the teleoconch. Comparison of the apical part and the whole shell of ''Otukaia kiheiziebisu'': File:Calliostoma kiheiziebisu apex.png File:Calliostoma k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean René Constant Quoy
Jean René Constant Quoy (10 November 1790 in Maillé, Vendée, Maillé – 4 July 1869 in Rochefort, Charente-Maritime, Rochefort) was a French naval surgeon, zoologist and anatomist. In 1806, he began his medical studies at the school of naval medicine at Rochefort, Charente-Maritime, Rochefort, afterwards serving as an auxiliary-surgeon on a trip to the Antilles (1808–1809). After earning his medical doctorate in 1814 at Montpellier, he was surgeon-major on a journey to Réunion (1814–1815). Along with Joseph Paul Gaimard, he served as naturalist and surgeon aboard the ''Uranie'' under Louis de Freycinet from 1817 to 1820, and on the ''French ship Astrolabe (1817), Astrolabe'' (1826–1829) under the command of Jules Dumont d'Urville. In July 1823 he and Gaimard presented a paper to the Académie royale des Sciences on the origin of coral reefs, taking issue with the then widespread belief that these were constructed by coral polyps from bases in very deep water and arguin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Tongana
''Coriocella'' is a genus of small slug-like sea snails, marine gastropod molluscs in the family Velutinidae.Bouchet, P. (2011). Coriocella Blainville, 1824. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=456342 on 2011-06-17 Description The ear-shaped shell is extremely thin, even membranous in part and concealed in the mantle. It has a small spiral turn at the apex. The aperture is very large. The shell lacks a columella. The soft body is elliptical and much depressed. The borders of the mantle are very thin, notched in front and spreading out widely. The oval foot is very small. The head is scarcely distinct. The two short and rather thick tentacles are contractile and concealed under the shield. The eyes are situated at the base of the tentacles. Species Species within the genus ''Coriocella'' include: *'' Coriocella fella'' Er. Marcus & Ev. Marcus, 1970 * '' Coriocella herberti'' Drivas & Jay, 1990 *''Coriocell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Safagae
''Coriocella safagae'' is a species of small sea snail with a transparent internal shell, a marine gastropod mollusk in the family Velutinidae Velutinidae is a family of small sea snails, marine gastropod molluscs in the clade Littorinimorpha.Gofas, S. (2014). Velutinidae Gray, 1840. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetail .... Because the shell is mostly internal, the snail resembles a sea slug in general appearance. References External links * Velutinidae Gastropods described in 1999 {{Velutinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Nigra
''Coriocella nigra'' is a species of sea snail, a marine gastropod mollusk in the family Velutinidae. An Indo-Pacific species, it lives on rocks at depths of up to 15 m. It is up to 10 cm long and has an internal shell; body color is black or brown. ''C. nigra'' is probably a predator of tunicates. Taxonomy This species was described as ''Coriocella nigra'' by French zoologist Henri Marie Ducrotay de Blainville in 1824 and he placed it in the newly established genus ''Coriocella'' as its only species at that time. ''Coriocella nigra'' is the type species of the genus ''Coriocella''. Nowadays, at least six other species are recognized in the genus ''Coriocella'' and Blainville's binomial name is still treated as valid and in use. Distribution The distribution of ''Coriocella nigra'' is Indo-Pacific and includes South Africa, Mozambique, Kenya, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Jayi
''Coriocella'' is a genus of small slug-like sea snails, marine gastropod molluscs in the family Velutinidae.Bouchet, P. (2011). Coriocella Blainville, 1824. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=456342 on 2011-06-17 Description The ear-shaped shell is extremely thin, even membranous in part and concealed in the mantle. It has a small spiral turn at the apex. The aperture is very large. The shell lacks a columella. The soft body is elliptical and much depressed. The borders of the mantle are very thin, notched in front and spreading out widely. The oval foot is very small. The head is scarcely distinct. The two short and rather thick tentacles are contractile and concealed under the shield. The eyes are situated at the base of the tentacles. Species Species within the genus ''Coriocella'' include: *'' Coriocella fella'' Er. Marcus & Ev. Marcus, 1970 * '' Coriocella herberti'' Drivas & Jay, 1990 *''Coriocell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Herberti
''Coriocella'' is a genus of small slug-like sea snails, marine gastropod molluscs in the family Velutinidae.Bouchet, P. (2011). Coriocella Blainville, 1824. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=456342 on 2011-06-17 Description The ear-shaped shell is extremely thin, even membranous in part and concealed in the mantle. It has a small spiral turn at the apex. The aperture is very large. The shell lacks a columella. The soft body is elliptical and much depressed. The borders of the mantle are very thin, notched in front and spreading out widely. The oval foot is very small. The head is scarcely distinct. The two short and rather thick tentacles are contractile and concealed under the shield. The eyes are situated at the base of the tentacles. Species Species within the genus ''Coriocella'' include: *'' Coriocella fella'' Er. Marcus & Ev. Marcus, 1970 * '' Coriocella herberti'' Drivas & Jay, 1990 *''Coriocell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coriocella Fella
''Coriocella'' is a genus of small slug-like sea snails, marine gastropod molluscs in the family Velutinidae.Bouchet, P. (2011). Coriocella Blainville, 1824. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=456342 on 2011-06-17 Description The ear-shaped shell is extremely thin, even membranous in part and concealed in the mantle. It has a small spiral turn at the apex. The aperture is very large. The shell lacks a columella. The soft body is elliptical and much depressed. The borders of the mantle are very thin, notched in front and spreading out widely. The oval foot is very small. The head is scarcely distinct. The two short and rather thick tentacles are contractile and concealed under the shield. The eyes are situated at the base of the tentacles. Species Species within the genus ''Coriocella'' include: *'' Coriocella fella'' Er. Marcus & Ev. Marcus, 1970 * ''Coriocella herberti'' Drivas & Jay, 1990 *''Coriocella ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tentacle
In zoology, a tentacle is a flexible, mobile, and elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work mainly like muscular hydrostats. Most forms of tentacles are used for grasping and feeding. Many are sensory organs, variously receptive to touch, vision, or to the smell or taste of particular foods or threats. Examples of such tentacles are the eyestalks of various kinds of snails. Some kinds of tentacles have both sensory and manipulatory functions. A tentacle is similar to a cirrus, but a cirrus is an organ that usually lacks the tentacle's strength, size, flexibility, or sensitivity. A nautilus has cirri, but a squid has tentacles. Invertebrates Molluscs Many molluscs have tentacles of one form or another. The most familiar are those of the pulmonate land snails, which usually have two sets of tentacles on the head: when extended ... [...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] |
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] |
