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Calliobasis Chlorosa
''Calliobasis chlorosa'' is a species of small deep water sea snail in the family Seguenziidae. Distribution This marine species occurs off Norfolk Island Norfolk Island (, ; Norfuk: ''Norf'k Ailen'') is an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia, directly east of Australia's Evans Head and about from Lord Howe Island. Together w .... Description The height of the shell is about . References chlorosa Molluscs of the Pacific Ocean Gastropods described in 1983 {{Seguenziidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Marshall (taxonomist)
Bruce Anders Marshall (born 29 March 1948) is a New Zealand taxonomist and malacologist. He is an expert on New Zealand mollusca and has named hundreds of species and genera. Academic career He is a self-taught malacologist and started working at the Museum of New Zealand Te Papa Tongarewa in 1976. Until 2019, he was the Collection Manager of Molluscs at the Te Papa Tongarewa, where he described the largest number of new species in the history of the museum. In 2012 he was awarded a Doctor of Science degree by Victoria University of Wellington. The conferment letter described him as "the leading authority on the taxonomy and systematics of living molluscs in New Zealand". In 2018 he was awarded the Lifetime Achievement award by the Malacological Society of Australasia. Taxa named in Marshall's honour As of 2019, 24 species and 6 genera had been named after him. The genera are: * ''Bruceiella'' Warén & Bouchet, 1993 * '' Bruceina'' Özdikmen, 2013 * '' Brucetriphora'' Beu, 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists 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. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...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 A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known .... Anatomy Sea snails are a very large group o ... [...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 opi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seguenziidae
Seguenziidae is a family of very small deepwater sea snails, marine gastropod mollusks in the superfamily Seguenzioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2012). Seguenziidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23116 on 2013-03-26 Distribution Species from this family occur in the Atlantic Ocean, the Pacific Ocean, the Indian Ocean and the Antarctic Ocean, mostly at bathyal and abyssal depths. Only a few species have been found at depths less than 300 m and none at intertidal depths. Description The thin, translucent, white shell has a trochiform shape. They are small or very small. Their maximum height is 22 mm. They are usually nacreous. The inner lip has often a tooth-like fold. The outer lip has characteristically one to three concave notches (except in the genus ''Guttula''). The chitinous operculum is multispiral. The rhipidoglossan r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norfolk Island
Norfolk Island (, ; Norfuk: ''Norf'k Ailen'') is an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia, directly east of Australia's Evans Head and about from Lord Howe Island. Together with the neighbouring Phillip Island and Nepean Island, the three islands collectively form the Territory of Norfolk Island. At the 2021 census, it had inhabitants living on a total area of about . Its capital is Kingston. The first known settlers in Norfolk Island were East Polynesians but they had already departed when Great Britain settled it as part of its 1788 settlement of Australia. The island served as a convict penal settlement from 6 March 1788 until 5 May 1855, except for an 11-year hiatus between 15 February 1814 and 6 June 1825, when it lay abandoned. On 8 June 1856, permanent civilian residence on the island began when descendants of the ''Bounty'' mutineers were relocated from Pitcairn Island. In 1914 the UK handed Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calliobasis
''Calliobasis'' is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae. The name ''Calliobasis'' was formed from the Ancient Greek words ''kallion'' (= more beautiful) and ''basis'' (= pedestal). Its gender is feminine. Species Species within the genus ''Calliobasis'' include: *''Calliobasis bilix ''Calliobasis bilix'', common name the balanced top shell, is a species of extremely small deep water sea snail, a marine gastropod mollusk in the family Seguenziidae.WoRMS (2013). ''Calliobasis bilix'' (Hedley, 1905). Retrieved through: World R ...'' ( Hedley, 1905) *'' Calliobasis bombax'' (Cotton & Godfrey, 1938) *'' Calliobasis chlorosa'' Marshall, 1983 * † '' Calliobasis eos'' B. A. Marshall, 1983 *'' Calliobasis festiva'' Marshall, 1991 *'' Calliobasis gemmata'' Poppe, Tagaro & Stahlschmidt, 2015 *'' Calliobasis lapulapui'' Poppe, Tagaro & Dekker, 2006 *'' Calliobasis magellani'' Poppe, Tagaro & Dekker, 2006 *'' Calliobasis merista'' Marshall, 199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molluscs Of The Pacific Ocean
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 gastropo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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