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Laginiopsis Trilobata
The Laginiopsidae are a taxonomic family of planktonic, marine opisthobranch gastropod mollusks in the suborder Gymnosomata, commonly called the ' sea angels'. These small pelagic snails lack shells (except in their early embryonic stage). Laginiopsidae is represented by a single species ('' Laginiopsis trilobata''), itself known from only a single specimen. This was one of several species described by the French malacologist Alice Pruvot-Fol. Like other Gymnosomata, the Laginiopsids are likely carnivorous, though nothing about the species' feeding habits and life history are recorded. The body of the single species is rounded with large swimming parapoda (wings). The various tentacles, suckers, jaws, and radula typical of other Gymnosomata are all absent in this family (the lack of a radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which ... [...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] |
Embryo
An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell. The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells known as blastomeres. The blastomeres are arranged as a solid ball that when reaching a certain size, called a morula, takes in fluid to create a cavity called a blastocoel. The structure is then termed a blastula, or a blastocyst in mammals. The mammalian blastocyst hatches before implantating into the endometrial lining of the womb. Once implanted the embryo will continue its development through the next stages of gastrulation, neurulation, and organogenesis. Gastrulation is the formation of the three germ layers that will form all of the different parts of the body. Neurulation forms the nervous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proboscis
A proboscis () is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elongated nose or snout. Etymology First attested in English in 1609 from Latin , the latinisation of the Ancient Greek (), which comes from () 'forth, forward, before' + (), 'to feed, to nourish'. The plural as derived from the Greek is , but in English the plural form ''proboscises'' occurs frequently. Invertebrates The most common usage is to refer to the tubular feeding and sucking organ of certain invertebrates such as insects (e.g., moths, butterflies, and mosquitoes), worms (including Acanthocephala, proboscis worms) and gastropod molluscs. Acanthocephala The Acanthocephala or thorny-headed worms, or spiny-headed worms are characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azores
) , motto =( en, "Rather die free than subjected in peace") , anthem= ( en, "Anthem of the Azores") , image_map=Locator_map_of_Azores_in_EU.svg , map_alt=Location of the Azores within the European Union , map_caption=Location of the Azores within the European Union , subdivision_type=Sovereign state , subdivision_name=Portugal , established_title=Settlement , established_date=1432 , established_title3=Autonomous status , established_date3=30 April 1976 , official_languages=Portuguese , demonym= ( en, Azorean) , capital_type= Capitals , capital = Ponta Delgada (executive) Angra do Heroísmo (judicial) Horta (legislative) , largest_city = Ponta Delgada , government_type=Autonomous Region , leader_title1=Representative of the Republic , leader_name1=Pedro Manuel dos Reis Alves Catarino , leader_title2= President of the Legislative Assembly , leader_name2= Luís Garcia , leader_title3= President of the Regional Government , leader_name3=José Manuel Bolieiro , le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laginiopsis Triloba
The Laginiopsidae are a taxonomic family of planktonic, marine opisthobranch gastropod mollusks in the suborder Gymnosomata, commonly called the ' sea angels'. These small pelagic snails lack shells (except in their early embryonic stage). Laginiopsidae is represented by a single species (''Laginiopsis trilobata''), itself known from only a single specimen. This was one of several species described by the French malacologist Alice Pruvot-Fol. Like other Gymnosomata, the Laginiopsids are likely carnivorous, though nothing about the species' feeding habits and life history are recorded. The body of the single species is rounded with large swimming parapoda (wings). The various tentacles, suckers, jaws, and radula typical of other Gymnosomata are all absent in this family (the lack of a radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laginiopsis
The Laginiopsidae are a taxonomic family of planktonic, marine opisthobranch gastropod mollusks in the suborder Gymnosomata, commonly called the ' sea angels'. These small pelagic snails lack shells (except in their early embryonic stage). Laginiopsidae is represented by a single species (''Laginiopsis trilobata''), itself known from only a single specimen. This was one of several species described by the French malacologist Alice Pruvot-Fol. Like other Gymnosomata, the Laginiopsids are likely carnivorous, though nothing about the species' feeding habits and life history are recorded. The body of the single species is rounded with large swimming parapoda (wings). The various tentacles, suckers, jaws, and radula typical of other Gymnosomata are all absent in this family (the lack of a radula being particularly distinctive). The head has a long proboscis tipped with the mouth and three fleshy lobes. Genera and species Genus and species within the family Laginiopsidae include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radula
The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus. The radula is unique to the molluscs, and is found in every class of mollusc except the bivalves, which instead use cilia, waving filaments that bring minute organisms to the mouth. Within the gastropods, the radula is used in feeding by both herbivorous and carnivorous snails and slugs. The arrangement of teeth ( denticles) on the radular ribbon varies considerably from one group to another. In most of the more ancient lineages of gastropods, the radula is used to graze, by scraping diatoms and other microscopic algae off rock surfaces and other substrates. Predatory marine snails such as the Naticidae use the radula plus an acidic secretion to bore through the shell of other molluscs. Other predatory marine snails ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alice Pruvot-Fol
Alice Pruvot-Fol (4 August 1873 – 28 March 1972) was a French opisthobranch malacologist. She was the author of many new species, mostly described on the basis of preserved animals. She described a new species (''Nembrotha rutilans'', Pruvot-Fol, 1931) on the basis of a painted illustration in a book by William Saville-Kent (1893) entitled ''The Great Barrier Reef of Australia''. She continued working and naming new species until late in her life. Even in 1962, when she was 89 years old, she named ''Phyllidia pulitzeri''. Species Some of the species described by her: *'' Aldisa banyulensis'' Pruvot-Fol, 1951 *'' Aplysiopsis formosa'' Pruvot-Fol *'' Atagema gibba'' Pruvot-Fol *'' Atagema rugosa'' Pruvot-Fol, 1951 *'' Chelidonura africana'' Pruvot-Fol *'' Chromodoris kuniei'' Pruvot-Fol, 1930 *''Cumanotus cuenoti'' Pruvot-Fol, 1948 *'' Doriopsilla rarispinosa'' Pruvot-Fol, 1951 *''Elysia babai'' Pruvot-Fol, 1945 *'' Elysia mercieri'' Pruvot-Fol, 1930 *'' Facelina dubia'' Pru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laginiopsis Trilobata
The Laginiopsidae are a taxonomic family of planktonic, marine opisthobranch gastropod mollusks in the suborder Gymnosomata, commonly called the ' sea angels'. These small pelagic snails lack shells (except in their early embryonic stage). Laginiopsidae is represented by a single species ('' Laginiopsis trilobata''), itself known from only a single specimen. This was one of several species described by the French malacologist Alice Pruvot-Fol. Like other Gymnosomata, the Laginiopsids are likely carnivorous, though nothing about the species' feeding habits and life history are recorded. The body of the single species is rounded with large swimming parapoda (wings). The various tentacles, suckers, jaws, and radula typical of other Gymnosomata are all absent in this family (the lack of a radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelagic
The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or water column between the surface of the sea and the bottom. Conditions in the water column change with depth: pressure increases; temperature and light decrease; salinity, oxygen, micronutrients (such as iron, magnesium and calcium) all change. Marine life is affected by bathymetry (underwater topography) such as the seafloor, shoreline, or a submarine seamount, as well as by proximity to the boundary between the ocean and the atmosphere at the ocean surface, which brings light for photosynthesis, predation from above, and wind stirring up waves and setting currents in motion. The pelagic zone refers to the open, free waters away from the shore, where marine life can swim freely in any direction unhindered by topographical constraints. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxa (singular: taxon) and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain, kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transformed into a system of modern biological classification intended to reflect the evolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Angel
Sea angels (clade Gymnosomata) are a large group of small free-swimming sea slugs, not to be confused with Cnidarians (Jellyfish and other similar creatures), classified into six different families. They are pelagic opisthobranchs in the clade Gymnosomata within the larger mollusc clade Heterobranchia. Sea angels were previously referred to as a type of pteropod. Sea angels are also sometimes known as "cliones" but this is potentially misleading because the family Clionidae is just one of the families within this clade. Recent molecular data suggest the Gymnosomata form a sister group to the Thecosomata (other planktonic, weakly or nonmineralized gastropods), but this long-standing hypothesis has also had some recent detractors. Fossils of the group go back to the Middle Frasnian stage of the Late Devonian period. Distribution These organisms have a wide geographic range, from polar regions, under sea ice, to equatorial (tropic) seas. Description In this clade, the foot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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