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Retusa Obtusa
''Retusa obtusa'', common name the "Arctic barrel-bubble", is a species of very small head-shield sea snail or bubble shell, a marine gastropod mollusk in the family Retusidae Retusidae is a family of very small sea snails, barrel-bubble snails, marine opisthobranch gastropod mollusks. These are headshield slugs, in the superfamily Bulloidea.Bouchet, P. (2012). Retusidae. Accessed through: World Register of Marine Spec ....Gofas, S. (2013). Retusa obtusa (Montagu, 1803). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141134 on 2014-03-30 This species occurs widely in the northern parts of the Atlantic Ocean, occurring in both the Eastern Atlantic and Western Atlantic. It has also been reported from North Carolina, and from Alaska in the Pacific Ocean. The shell reaches a maximum size of 3 mm. References External links Retusidae Gastropods described in 1803 {{Heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Montagu (naturalist)
George Montagu (1753 – 20 June 1815) was an English army officer and naturalist. He was known for his pioneering '' Ornithological Dictionary'' of 1802, which for the first time accurately defined the status of Britain's birds. He is remembered today for species such as the Montagu's harrier, named for him. Life and work George Montagu was born to James Montagu (1713–1790), who was great-great-grandson of Lord James Montagu (d. 1665), who was younger son of Henry Montagu, 1st Earl of Manchester. Montagu is best known for his '' Ornithological Dictionary'' (1802) and his contributions to early knowledge of British birds. He showed that many previously accepted species were invalid, either because they were birds in summer or winter plumage or males and females of the same species. His study of harriers resulted in the discovery that the Montagu's harrier was breeding in southern England. He was also involved in the first British records of cirl bunting, whose breeding range ... [...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] |
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] |
Marine (ocean)
The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided."Ocean." ''Merriam-Webster.com Dictionary'', Merriam-Webster, |
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] |
Species
In biology, a species is the basic unit of 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 produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, 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 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 specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Name
In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrasted with the scientific name for the same organism, which is Latinized. A common name is sometimes frequently used, but that is not always the case. In chemistry, IUPAC defines a common name as one that, although it unambiguously defines a chemical, does not follow the current systematic naming convention, such as acetone, systematically 2-propanone, while a vernacular name describes one used in a lab, trade or industry that does not unambiguously describe a single chemical, such as copper sulfate, which may refer to either copper(I) sulfate or copper(II) sulfate. Sometimes common names are created by authorities on one particular subject, in an attempt to make it possible for members of the general public (including such interested par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retusa
''Retusa'' is a genus of very small head-shield sea snails or barrel-bubble snails, marine gastropod mollusks in the family Retusidae.Bouchet, P.; Gofas, S. (2013). ''Retusa'' T. Brown, 1827. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138432 on 2014-03-30 Species Species within the genus ''Retusa'' include: * '' Retusa abyssicola'' Valdés, 2008 * '' Retusa acrobeles'' (R. B. Watson, 1883) * † '' Retusa acrochone'' (Cossmann & Pissarro, 1900) * '' Retusa agulhasensis'' Thiele, 1925 * '' Retusa amboynensis'' (R. B. Watson, 1883) * '' Retusa amphizosta'' (Watson, 1886) * '' Retusa avenaria'' (R. B. Watson, 1883) * '' Retusa atkinsoni'' (Tenison-Woods, 1876) * ''Retusa canariensis'' (Nordsieck & Talavera, 1979) * '' Retusa carpenteri'' (Hanley, 1859) * '' Retusa cecillii'' (Philippi, 1844) * '' Retusa chrysoma'' Burn in Burn & Bell, 1974 * ''Retusa chukchii'' Chaban, 2008 * ''Retusa complanata'' (Watson, 1883) * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
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 gastropod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retusidae
Retusidae is a family of very small sea snails, barrel-bubble snails, marine opisthobranch gastropod mollusks. These are headshield slugs, in the superfamily Bulloidea.Bouchet, P. (2012). Retusidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=156 on 2012-08-19 Genera Genera within the family Retusidae include: * '' Pyrunculus'' Pilsbry, 1895 * '' Relichna'' Rudman, 1971 * ''Retusa ''Retusa'' is a genus of very small head-shield sea snails or barrel-bubble snails, marine gastropod mollusks in the family Retusidae.Bouchet, P.; Gofas, S. (2013). ''Retusa'' T. Brown, 1827. Accessed through: World Register of Marine Species at ...'' T. Brown, 1827 * '' Sulcoretusa'' J.Q. Burch, 1945 ;Genera brought into synonymy: * ''Coleophysis'': synonym of ''Retusa'' T. Brown, 1827 * ''Cylichnina'' Monterosato, 1884: synonym of ''Retusa'' T. Brown, 1827 * ''Mamilloretusa'' F. Nordsieck, 1972 accepted as ''Retusa'' T. Brown, 1827 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philinoidea
Philinoidea is a taxonomic superfamily of sea slugs, specifically headshield slugs, marine gastropod mollusks in the order Cephalaspidea. MolluscaBase eds. (2021). MolluscaBase. Philinoidea Gray, 1850 (1815). Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=196322 on 2021-10-14 Anatomy The species in the Superfamily Philinoidea are generally small animals, and have no shell or gills. Unlike some related forms, the visceral mass is not sharply set off from the rest of the body. Taxonomy According to the latest taxonomy, the following families are recognised in the Superfamily Philinoidea: * Aglajidae * Alacuppidae * Antarctophilinidae Moles, Avila & Malaquias, 2019 * Colpodaspididae * Gastropteridae * Laonidae * Philinidae * Philinoglossidae * Philinorbidae ** '' Philinorbis'' Habe, 1950 ** '' Pseudophiline'' Habe, 1976 * Scaphandridae Scaphandridae is a family of sea snails, marine gastropod mollusks in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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