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Nepotilla Marmorata
''Nepotilla marmorata'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae. ''Daphnella marmorata'' (Verco, 1909) is a junior homonym of '' Daphnella marmorata'' Hinds, 1844 Description Joseph Verco (1909) and J.K. Tucker (2004) considered this species as a variety of '' Nepotilla minuta''. Verco described it as beautifully marbled with flames of white and deep blackish-brown. Charles Hedley (1922) considered it as a variety of '' Nepotilla mimica'' Distribution This marine species is |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Snail
Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible Gastropod shell, 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 Neritidae, 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 (gastropod), Truncatella'') are sometimes considered to be sea snails and sometimes listed as land snails. Anatomy Sea snails are a very large and diverse group of animals. 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 w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and sea slug, slugs, as well as freshwater snails, freshwater limpets, land snails and slugs. The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It 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 Furongian, Late Cambrian. , 721 family (taxonomy), families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently neontology, extant living fossil, with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and 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. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater and even terrestrial species. 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 extant i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) 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". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raphitomidae
Raphitomidae is a Family (biology), family of small to medium-sized sea snails, marine (ocean), marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". ''Malacologia'' 47(1-2). . 397 pp. Philippe Bouchet, Bouchet, Kantor ''et al''. elevated in 2011 the subfamily Raphitominae (which at that point had been placed in the family Conidae) to the rank of family. This was based on a cladistic analysis of Gastropod shell#Morphology, shell morphology, radula, radular characteristics, anatomical characters, and a dataset of molecular sequences of three gene fragments. The family was found to be monophyletic. Description The Raphitomidae is the largest, most diverse and most variable taxon in the Conoidea, with the greatest number of species and the largest ecological range (from the tropics to the pole) and largest vertical range (intertidal to hadal depths). The shells of species in the Raphit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daphnella Marmorata
''Daphnella marmorata'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae. Description The length of the shell attains 8 mm. The whorls are flatly angulated around the upper part, elegantly cancellated with transverse and longitudinal striae. The columella is striated at the base. The color of the shell is whitish, longitudinally zigzag marbled with chestnut. Distribution This marine species occurs off |
Joseph Verco
Sir Joseph Cooke Verco (1 August 1851 – 26 July 1933) was an Australian physician and conchologist. Early years Verco, born at Fullarton, South Australia, was a son of James Crabb Verco. Both his parents came from Cornwall, UK. He was educated at the J. L. Young's Adelaide Educational Institution, and after spending a year in the South Australian Railways, intending to become a civil engineer, he decided to take up medicine. As he wished to matriculate at the University of London, he found it necessary to do more work in classics and spent a year at St Peter's College, Adelaide for this purpose. At that school he won the Young exhibition, awarded to the best scholar of the year, and then went to London at the beginning of 1870. He obtained his M.R.C.S. in 1874; M.B. in 1875, with scholarship and the gold medals for forensic medicine and medicine; L.R.C.P. in 1875; B.S., with scholarship and gold medal; M.D.; and F.R.C.S. – all in London in 1876. Verco was one of the mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepotilla Minuta
''Nepotilla minuta'', common name the minute turrid, is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae. ''Daphnella minuta'' Verco, 1909 is a synonym of '' Nepotilla mimica'' (Sowerby III, 1896), according to Hedley (1922). Description The length of the shell attains 6 mm. (Original description) The minute shell is fusiform, turreted, elongate and thin. It is saturated with a reddish chestnut. It contains 6 convex whorls, including the protoconch. They are spirally many keeled and between the keels thickly and slenderly longitudinally lirate. The protoconch consists of two subinflated whorls which are spirally and equally striate. The aperture is shorter than the spire, elongately ovate. The outer lip is thin and sinuous. The inner lip is inconspicuous. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Hedley
Charles Hedley (27 February 1862 – 14 September 1926) was a naturalist, specifically a malacologist. He was born in Britain, but he spent most of his life in Australia. He was the winner of the 1925 Clarke Medal. Early life Hedley was born in the vicarage at Masham, Yorkshire, England, the son of the Rev. Canon Thomas Hedley and his wife Mary, ''née'' Bush. On account of delicate health Hedley had only two years at Eastbourne College, but his education was continued by his father, a fellow of Trinity College, Cambridge. He was mainly educated in the south of France; from boyhood he collected mollusc shells, and was greatly influenced by a French work on molluscan anatomy. In France he met George French Angas who gave him a letter of introduction to Dr. George Bennett of Sydney. Exploring in Oceania In 1881 Hedley went to New Zealand, and in September 1882 to Sydney. He was suffering from asthma and after trying the dry interior found he was in better health when ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepotilla Mimica
''Nepotilla mimica'' is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae. ;Variety: ''Nepotilla mimica fusca'' (Sowerby III, 1896) : a dark brown variety. Description The length of the shell attains 7 mm, its diameter 2.5 mm. This little, white, turreted shell bears rather a curious resemblance to the ''Daphnella (Teres)'' (synonym of ''Teretia teres'' (Reeve, 1844) ). The spire is elongate and very sharp. The shell contains 6 convex, rounded whorls. These are slightly concave at the top. The sculpture consists of conspicuous lirae, alternated with smaller lirae, sculptedc lengthwise by minute, oblique lamellae. The body whorl is rather short, contracted at the base and slightly rostrate. The columella is slightly twisted. The aperture is ovate. The outer lip is sharp and arcuate. The sinus is deep and not very wide. The author has only seen three specimens, the type here described being the largest. The two smaller ones are shorter in proportion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
