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Mauidrillia Acuta
''Mauidrillia acuta'' is an extinct species of sea snail, a marine gastropod mollusk in the family Horaiclavidae Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. In 2011 this family was split off from the family Pseudomelatomidae (formerly the subfamily Crassispirinae McLean, 1971) by Bouchet P., Ka ....Marshall, B. (2015). Mauidrillia acuta. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=831559 on 2017-02-07 Description The length of the shell attains 12.5 mm, its diameter 4 mm. This marine genus ranges across the Indo-West Pacific, encompassing the Red Sea and East Africa to Japan, as well as along the coast of Australia. Distribution This extinct marine species was found in Tertiary strata of the Chatham Islands and Pitt Island, New Zealand. References Marwick, J. "The Tertiary Mollusca of the Chatham Islands in ... [...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] |
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, a ... [...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 ... [...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] |
Horaiclavidae
Horaiclavidae is a family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. In 2011 this family was split off from the family Pseudomelatomidae (formerly the subfamily Crassispirinae McLean, 1971) by Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. in their publication "A new operational classification of the Conoidea". It forms a clade together with the family Clavatulidae. It has many characters in common with the family Pseudomelatomidae, except the smaller shell with a low spire, the short siphonal canal and a weak or absent spiral sculpture. The radular formula is 1-0-0-0-1, but some species in this family lack a radula. Genera Genera within the family Horaiclavidae include: * '' Anacithara'' Hedley, 1922 * '' Anguloclavus'' Shuto, 1983 * '' Aoteadrillia'' Powell, 1942 * '' Asperosculptura'' Ardovini, Poppe & Tagaro, 2021 * '' Austrocarina'' Laseron, 1954 * '' Austrodrillia'' Hedley, 1918 * ''Buchema'' Corea, 1934 * '' Carinapex'' Dall, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chatham Islands
The Chatham Islands ( ) ( Moriori: ''Rēkohu'', 'Misty Sun'; mi, Wharekauri) are an archipelago in the Pacific Ocean about east of New Zealand's South Island. They are administered as part of New Zealand. The archipelago consists of about ten islands within an approximate radius, the largest of which are Chatham Island and Pitt Island (Rangiauria). They include New Zealand's easternmost point, the Forty-Fours. Some of the islands, formerly cleared for farming, are now preserved as nature reserves to conserve some of the unique flora and fauna. The islands were uninhabited when the Moriori people arrived around 1500 CE and developed a peaceful way of life. In 1835 members of the Ngāti Mutunga and Ngāti Tama Māori iwi from the North Island of New Zealand invaded the islands and nearly exterminated the Moriori, enslaving the survivors. Later during the period of European colonisation of New Zealand, the New Zealand Company claimed that the British Crown had never ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pitt Island
Pitt Island is the second largest island in the Chatham Archipelago, New Zealand. It is called ''Rangiauria'' in Māori and ''Rangiaotea'' in ''Moriori.Government of New Zealand, Dept. of Conservation (1999) Chatham IslandsConservation Management Strategy map 6. Retrieved 13 July 2012. Pitt Island has an area of . It lies about to the east of New Zealand's main islands, and about to the southeast of Chatham Island, from which it is separated by Pitt Strait. The island is hilly; its highest point (Waihere Head) rises to above sea level. , Pitt Island had a population of about 38 people. Pitt Island's Kahuitara Point is the first populated location on earth to observe a sunrise in each new year, based on local time zone. History Pitt Island was originally inhabited by the Moriori, the indigenous peoples of the Chatham Islands, who called it ''Rangiaotea'' or ''Rangihaute''. Their archaeological remains are found almost everywhere on the island; large quantities of artef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauidrillia
''Mauidrillia'' is a genus of sea snails, marine gastropod mollusks in the family (biology), family Horaiclavidae, the turrids. Species Species within the genus ''Mauidrillia'' include: A.W.B. Powell (1944) mentions also a number of Australian species from the Lower Miocene to Recent * † ''Mauidrillia acuta'' (Marwick, 1928) * † ''Mauidrillia angustata'' Powell, 1942 * † ''Mauidrillia browni'' Marwick, 1943 * † ''Mauidrillia cinctuta'' (Marwick, 1929) * † ''Mauidrillia clavicula'' Powell, 1942 * † ''Mauidrillia consutilis'' (Tenison-Woods, 1880) * † ''Mauidrillia costifer'' (Suter, 1917) * ''Mauidrillia felina'' Kilburn, 1988 * † ''Mauidrillia fimbriata'' Laws, 1947 * † ''Mauidrillia imparilirata'' Powell, 1942 * † ''Mauidrillia inaequalis'' Powell, 1942 * † ''Mauidrillia incerta'' Beu, 1970 * † ''Mauidrillia occidentalis'' Maxwell, 1988 * † ''Mauidrillia praecophinodes'' (Suter, 1917) * † ''Mauidrillia supralaevis'' Powell, 1942 * † ''M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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