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Stenodrillia
''Stenodrillia'' is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.Bouchet, P. (2015). Stenodrillia. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=416013 on 2016-09-14 Fossil records This genus is known in the fossil records from the Oligocene to the Pliocene (age range: from 28.4 to 2.588 million years ago). Fossils are found in the marine strata of Italy, Austria, Denmark and Hungary. Description Species within this genus can reach a size of about . Species Species within the genus ''Stenodrillia'' include: * † ''Stenodrillia bellardii'' Des Moulins 1842 * ''Stenodrillia horrenda ''Stenodrillia horrenda'' is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.Rosenberg, G. (2015). Stenodrillia horrenda. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marin ...'' (Watson, 1886) * † '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenodrillia
''Stenodrillia'' is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.Bouchet, P. (2015). Stenodrillia. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=416013 on 2016-09-14 Fossil records This genus is known in the fossil records from the Oligocene to the Pliocene (age range: from 28.4 to 2.588 million years ago). Fossils are found in the marine strata of Italy, Austria, Denmark and Hungary. Description Species within this genus can reach a size of about . Species Species within the genus ''Stenodrillia'' include: * † ''Stenodrillia bellardii'' Des Moulins 1842 * ''Stenodrillia horrenda ''Stenodrillia horrenda'' is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.Rosenberg, G. (2015). Stenodrillia horrenda. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marin ...'' (Watson, 1886) * † '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stenodrillia Horrenda
''Stenodrillia horrenda'' is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.Rosenberg, G. (2015). Stenodrillia horrenda. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=420319 on 2016-12-12 Description The length of the shell attains 60 mm. (Original description) The very coarse and strong, long, narrow shell has with a concave conical base. It shows huge hunchy ribs, and coarse spiral threads. Its longitudinal sculpture is characterized by six enormous bunchy oblique ribs on each whorl, which die out on the base and at the sinus below the suture, but reach the suture at the bottom of the upper whorls. They are parted by broad open furrows, which run obliquely to the left and more or less continuously down the spire. These ribs and furrows are roughened by coarse unequal lines of growth. The surface is scored by strong rough spiral threads parted by wider furr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drilliidae
The Drilliidae are a Taxonomy (biology), taxonomic family (biology), family of small predatory sea snails with high-spired shells. They are classified as marine (ocean), marine gastropod mollusks in the superfamily Conoidea. This family has no subfamilies. It consists of about 30 genera and approximately 500 Recent species. Description The shell is claviform with a tall spire, or squatly conical to biconical. In many species, the siphonal canal is truncated. The aperture (mollusc), aperture is U-shaped with a parietal callus pad. The sculpture of the shell shows prominent axial ribs with a polished surface. Most species have a dorsal varix (mollusc), varix (transverse elevation), except in the genera ''Cymatosyrinx'', ''Elaeocyma'' and ''Splendrillia''. The protoconch can be smooth or very carinate. The ovate operculum (gastropod), operculum has a terminal nucleus. The radula of the species in this family have characteristically five teeth in each row (formula : 1 + 1 + 1 + 1 + ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compsodrillia Acestra
''Compsodrillia acestra'' is a species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, the turrids and allies. Description The length of the shell attains 19 mm, its diameter 5.5 mm. (Original description) The shell is long and slender. It has a pale olive-color with a translucent white tip. It contains 9 whorls, with a smooth vitreous rounded two-whorled protoconch. The fasciole is wide, steep, excavated and marked with close-set fine even spirals.;It is bounded behind by a sharply cut elevated thread, a little space in front of the suture. The whorl in front of the fasciole is covered with close-set, strong, subequal, flattish spirals, with narrow channelled interspaces. These spirals, from two on the four apical whorls, increase to seven on the penultimate whorl, and eleven (behind those on the siphonal canal) on the b ody whorl. Here they are a little more widely separated, and have one or two intercalary fine threads in the interspaces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compsodrillia Eucosmia
''Compsodrillia eucosmia'' is a species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, the turrids and allies. Description The length of the shell varies between 10 mm and 25 mm. (Original description) The color of the shell is pale, with touches of pale brown and a peripheral whitish zone. It contains 8 whorls, with a glossy, rounded protoconch of two whorls. The fasciole is rather wide, excavated, undulating in harmony with the ribs, marked by fine revolving threads and marginated at the appressed suture by a stout elevated line. The spiral sculpture on the rest of the shell (1) consists of (on the whorls preceding the body whorl) two or three prominent white stout threads, somewhat swollen where they ride over the ribs. On the body whorl there are about fifteen of these primary spirals. Between the fasciole and the end of the siphonal canal, in each of the wide interspaces, are (2) three or four much finer hardly elevated flattish threa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compsodrillia Gundlachi
''Compsodrillia gundlachi'' is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies. The specific epithet is named after Cuban naturalist Juan Gundlach. Description The length of the shell attains 50 mm. The original description is as follows: "The solid, slender shell is pale brown or whitish. It contains ten whorls (the nepionic whorls lost) strongly appressed at the suture; anal fascicle close to the suture,. The whorls are smooth or faintly spirally striated, rather wide and excavated. The notch is wide, not very deep. The sculpture consists of about six strong, short, turgid ribs obsolete in front of the periphery and on the last half of the body whorl. These are crossed by from two to five spiral threads stronger on the summits of the ribs, especially the pair which first appear, and faint, finer, spiral striations between the ribs. The lines of growth are well marked. The aperture is elongate. The outer lip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compsodrillia Haliostrephis
''Compsodrillia haliostrephis'' , common name the spindle drillia, is a species of sea snail, a marine gastropod mollusc in the family (biology), family Pseudomelatomidae, the turrids and allies. Description The length of the shell varies between 10 mm and 25 mm. (Original description) The pure white shell of the holotype contains 8 Whorl (mollusc), whorls with a glossy rounded vitreous protoconch of two whorls. The spiral sculpture resembles much as in ''Compsodrillia eucosmia'', a line marginating the suture. There are two or three strong primaries on the upper whorls, five or six on the body whorl, and eight or ten smaller ones on the siphonal canal. The principal primaries are strongly marked and slightly swollen on the summits of the ribs. The secondary spirals, very faint or absent behind the periphery but present in the interspaces in front of it, are finer than in the ''C. eucosmia'', and more numerous. The fasciole is wide, nearly smooth, undulated, and little ... [...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] |
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] |
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] |
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] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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