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Crockerella Tridesmia
''Crockerella'' is a genus of sea snails, marine gastropod mollusks in the family Clathurellidae. Species Species within the genus ''Crockerella'' include: * '' Crockerella castianira'' (Dall, 1919) * ''Crockerella conradiana ''Crockerella'' is a genus of sea snails, marine gastropod mollusks in the family Clathurellidae Clathurellidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P., Ka ...'' (Gabb, 1869) * '' Crockerella constricta'' (Gabb, 1865) * '' Crockerella crystallina'' (Gabb, 1865) * '' Crockerella cymodoce'' (Dall, 1919) * '' Crockerella eriphyle'' (Dall, 1919) * '' Crockerella evadne'' (Dall, 1919) * '' Crockerella lowei'' (Dall, 1903) * '' Crockerella philodice'' (Dall, 1919) * '' Crockerella scotti'' McLean, 1996 * '' Crockerella toreumata'' (Dall, W.H., 1889) * '' Crockerella tridesmia'' (Berry, 1941) ;Species brought into synonymy: * ''Crockerella hesione'' (Dall, 1919): synonym of ... [...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] |
Crockerella Cymodoce
''Crockerella cymodoce'' is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae, the cone snails A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines co ... and their allies. Description Distribution References cymodoce {{Clathurellidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrgocythara Danae
''Pyrgocythara danae'' is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae. Description The length of the shell attains 4.5 mm, its diameter 1.7 mm. (Original description) The minute shell is whitish, with a narrow brown band below the periphery in front of which the suture is laid. The protoconch is small with 1½ polished whorls followed by 4½ sculptured whorls. The suture is distinct, undulated not appressed. The spiral sculpture consists of a strong cord at the periphery angulating the whorls, with smaller threads (sometimes alternated) covering the rest of the surface with about equal interspaces. The axial sculpture consists of (on the body whorl 10) slightly sigmoid ribs, widest at the periphery, reaching the suture and fading out on the base, with narrower interspaces. On the obscure anal fasciole the interspaces are markedly concave. The aperture is narrow. The anal sulcus is wide and shallow. The outer lip is varicose. The inner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Tridesmia
''Crockerella'' is a genus of sea snails, marine gastropod mollusks in the family Clathurellidae. Species Species within the genus ''Crockerella'' include: * '' Crockerella castianira'' (Dall, 1919) * ''Crockerella conradiana ''Crockerella'' is a genus of sea snails, marine gastropod mollusks in the family Clathurellidae Clathurellidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P., Ka ...'' (Gabb, 1869) * '' Crockerella constricta'' (Gabb, 1865) * '' Crockerella crystallina'' (Gabb, 1865) * '' Crockerella cymodoce'' (Dall, 1919) * '' Crockerella eriphyle'' (Dall, 1919) * '' Crockerella evadne'' (Dall, 1919) * '' Crockerella lowei'' (Dall, 1903) * '' Crockerella philodice'' (Dall, 1919) * '' Crockerella scotti'' McLean, 1996 * '' Crockerella toreumata'' (Dall, W.H., 1889) * '' Crockerella tridesmia'' (Berry, 1941) ;Species brought into synonymy: * ''Crockerella hesione'' (Dall, 1919): synonym of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Toreumata
''Mangelia toreumata'' is a species of sea snail, a marine gastropod mollusc in the family Mangeliidae.Dall W. H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Scotti
{{Clathurellidae-stub ...
''Crockerella scotti'' is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae, the cone snails and their allies. Description Distribution References scotti ''Scoti'' or ''Scotti'' is a Latin name for the Gaels,Duffy, Seán. ''Medieval Ireland: An Encyclopedia''. Routledge, 2005. p.698 first attested in the late 3rd century. At first it referred to all Gaels, whether in Ireland or Great Britain, but l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Philodice
''Crockerella philodice'' is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae,. Description The length of the shell attains 7.5 mm, its diameter 3 mm. (Original description) The small, white shell has four or more whorls, exclusive of the (lost) protoconch. The suture is distinct, not appressed. The whorls slope behind and are rounded in front. The axial sculpture consists of (on the penultimate whorl about 17) short rounded ribs with subequal interspaces, hardly extended over the periphery and gradually becoming obsolete on the body whorl . Incremental lines are somewhat conspicuous on the base where they slightly reticulate the spiral sculpture. The latter comprises three prominent cords on the periphery equal and equidistant, swollen where they over ride the ribs, and feebler on the body whorl. The anal fasciole carries finer equal spiral threads, the base 10 or more somewhat larger and more nearly adjacent as they approach the siphona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Lowei
''Crockerella lowei'' is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae.WoRMS (2009). Crockerella lowei (Dall, 1903). In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=433443 on 2017-08-14 Description The length of the shell attains 9.5 mm, its diameter 4 mm. The small, whitish shell has a biconic shape and is acute. It has a smooth bulbous protoconch of a 1½ whorl and four and a half subsequent sculptured whorls. The suture is distinct, not appressed. The anal fasciole close to it, is flattish, at first with fine spiral sculpture but on the body whorl it becomes nearly smooth. There is other spiral sculpture of a narrow prominent thread at the periphery which is doubled on the subsequent whorls. On the body whorl there are eleven of the threads which are somewhat nodulose where they override the ribs, with much wider interspaces, and a few close threa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Evadne
''Crockerella evadne'' is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae. Description The length of the shell attains 12 mm, its diameter 3 mm. (Original description) The small, white shell is, slender. It has a smooth swollen protoconch of 1½ whorls and five subsequent whorls. The suture is constricted, distinct, not appressed. The whorls slope flatly toward it on both sides. The axial sculpture consists only of faint incremental lines. The spiral sculpture consists of one very prominent keel at the shoulder with one smaller and several still finer threads behind it. The anal fasciole is smooth. On the body whorl there are two major threads with much wider interspaces, in front of them about six smaller closer threads to the siphonal canal which has about six close-set threads and a marked siphonal fasciole. The aperture is rather narrow. The anal sulcus is deep, rounded, separated by a single thread from the suture. The outer lip is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Eriphyle
''Crockerella eriphyle'' is a species of sea snail, a marine gastropod mollusk in the family Clathurellidae. Description The shell attains a length of 10.5 mm, and its diameter is 4 mm. (Original description) The small, solid shell is whitish in color. Its shape is acute and fusiform. It contains 1½ whorls in the protoconch and six subsequent whorls. The protoconch has a minute apex and a swollen smooth globular succeeding whorl. These are followed by a peripherally keeled whorl, the subsequent whorls. These develop into two and then three spiral flattish spiral cords, including the peripheral one and in front of it, while behind the keel the surface slopes flatly up to the oppressed suture only interrupted by obscure ridges due to the axial sculpture. On the body whorl in front of the anal fasciole there are about a dozen similar cords extending to the end of the siphonal canal with about equal channeled inter-spaces, the posterior two or three cords more or less nod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crockerella Crystallina
''Crockerella crystallina'' is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines co ... and their allies. Description Distribution References crystallina Gastropods described in 1865 {{Clathurellidae-stub ... [...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. Anatomy Sea snails are a very large group of animals and a very diverse one. Most snails that live in salt water respire using a gill or gills; a few species, though, have a lung, are intertidal, and are active only at low tide when they can move around in the air. These air-breathing species includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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