|
Actinocyclus
''Actinocyclus'' is a genus of sea slugs, dorid nudibranchs, shell-less marine (ocean), marine gastropod molluscs in the family Actinocyclidae,Rosenberg, G. (2012). ''Actinocyclus'' Ehrenberg, 1831. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=196347 on 2012-06-06 and was first described by Christian Gottfried Ehrenberg in 1831. Species Species in the genus ''Actinocyclus'' include:http://www.seaslugforum.net/search.cfm?searchstring=Actinocyclus * ''Actinocyclus papillatus'' (Rudolph Bergh, Bergh, 1878) * ''Actinocyclus verrucosus'' Christian Gottfried Ehrenberg, Ehrenberg, 1831 See also * Actinocyclus (diatom), ''Actinocyclus'' Ehrenberg, 1837, a genus of diatoms in the family Hemidiscaceae. References External links * Actinocyclidae Gastropod genera Taxa named by Christian Gottfried Ehrenberg {{Heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinocyclus (diatom)
''Actinocyclus'' is a genus of diatoms in the family Hemidiscaceae. In 2006, a study was carried out which included finding traces of extinct Actinocylidae in Russia, which ultimately assisted geologists in dating its prevalence and significance to history. Out of 7236 samples found, they concluded that this species belongs to a group of known as ''Actinocyclus gorbunovii''. Freshwater species of ''Actinocyclus'' were also found to have a major part in playing a stratigraphic marker, also known as an estimated time in which geologists can use to help order things in a sequence of events. Using K–Ar dating, scientists concluded that ''Actinocyclus'' species were found to be most optimal in the middle-age Miocene era. References External links Coscinodiscales Coscinodiscophyceae genera Taxa named by Christian Gottfried Ehrenberg {{Diatom-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinocyclidae
Actinocyclidae is a family of sea slugs, dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea. This family is within the clade Euctenidiacea. Taxonomy Genera within the family Actinocyclidae include: * ''Actinocyclus'' Ehrenberg, 1831MolluscaBase (2018)''Actinocyclus'' Ehrenberg, 1831.Accessed on 2019-02-02. - the type genus ** ''Actinocyclus papillatus'' (Bergh, 1878) ** ''Actinocyclus verrucosus'' Ehrenberg, 1831http://www.seaslugforum.net/search.cfm?searchstring=Actinocyclus * ''Hallaxa'' Eliot, 1909 ** '' Hallaxa albopunctata'' Gosliner & S. Johnson, 1994 ** '' Hallaxa apefae'' Marcus, 1957 ** '' Hallaxa atrotuberculata'' Gosliner & S. Johnson, 1994 ** ''Hallaxa chani'' Gosliner & Williams, 1975 ** ''Hallaxa cryptica'' Gosliner & Johnson, 1994 ** '' Hallaxa decorata'' Bergh, 1905 ** ''Hallaxa elongata'' Gosliner & S. Johnson, 1994 ** ''Hallaxa fuscescens'' Pease, 1871 ** ''Hallaxa gilva'' Miller, 1987 ** ''Hallaxa hileenae'' Gosliner & Johnso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinocyclus Papillatus
''Actinocyclus papillatus'' is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae Actinocyclidae is a family of sea slugs, dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea. This family is within the clade Euctenidiacea. Taxonomy Genera within the family Actinocyclidae include: * ''Actinocyclus'' E ....Valdés, A. (2002) Review of the genus Actinocyclus Ehrenberg, 1831 (Opisthobranchia: Doridoidea). The Veliger 45: 193-202. Accessed through: Sea Slug Forum at http://www.seaslugforum.net/find/actipapi on 2012-02-26 Distribution ''Actinocyclus papillatus'' is found in the tropical Western Indo-Pacific Ocean. Description This nudibranch grows up to 100 mm in length. Ecology References External links Chromodorididae Gastropods described in 1878 {{Chromodorididae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinocyclus Verrucosus
''Actinocyclus verrucosus'' is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Actinocyclidae. Distribution This species was described from Massawa, Eritrea, Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; T .... It is widespread in the tropical Indo-Pacific Ocean.Rudman, W.B., 2005 (August 4''Actinocyclus verrucosus'' Ehrenberg, 1831. n/nowiki> Sea Slug Forum. Australian Museum, Sydney. References Chromodorididae Gastropods described in 1831 Taxa named by Christian Gottfried Ehrenberg {{Heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diatom
A diatom (Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". is any member of a large group comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a significant portion of the Earth's biomass: they generate about 20 to 50 percent of the oxygen produced on the planet each year, take in over 6.7 billion metric tons of silicon each year from the waters in which they live, and constitute nearly half of the organic material found in the oceans. The shells of dead diatoms can reach as much as a half-mile (800 m) deep on the ocean floor, and the entire Amazon basin is fertilized annually by 27 million tons of diatom shell dust transported by transatlantic winds from the African Sahara, much of it from the Bodélé Depression, which was once made up of a system of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Gottfried Ehrenberg
Christian Gottfried Ehrenberg (19 April 1795 – 27 June 1876) was a German naturalist, zoologist, comparative anatomist, geologist, and microscopist. Ehrenberg was an evangelist and was considered to be of the most famous and productive scientists of his time. Early collections The son of a judge, Christian Gottfried Ehrenberg was born in Delitzsch, near Leipzig. He first studied theology at the University of Leipzig, then medicine and natural sciences in Berlin and became a friend of the famous explorer Alexander von Humboldt. In 1818, he completed his doctoral dissertation on fungi, ''Sylvae mycologicae Berolinenses.'' In 1820–1825, on a scientific expedition to the Middle East with his friend Wilhelm Hemprich, he collected thousands of specimens of plants and animals. He investigated parts of Egypt, the Libyan Desert, the Nile valley and the northern coasts of the Red Sea, where he made a special study of the corals. Subsequently, parts of Syria, Arabia and Abyss ... [...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] |
Sea Slug
Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary time have either completely lost their shells, or have seemingly lost their shells due to having a greatly reduced or internal shell. The name "sea slug" is most often applied to nudibranchs, as well as to a paraphyletic set of other marine gastropods without obvious shells. Sea slugs have an enormous variation in body shape, color, and size. Most are partially translucent. The often bright colors of reef-dwelling species implies that these animals are under constant threat of predators, but the color can serve as a warning to other animals of the sea slug's toxic stinging cells (nematocysts) or offensive taste. Like all gastropods, they have small, razor-sharp teeth, called radulas. Most sea slugs have a pair of rhinophores—sensory te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nudibranch
Nudibranchs () are a group of soft-bodied marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, such as "clown", "marigold", "splendid", "dancer", "dragon", or "sea rabbit". Currently, about 3,000 valid species of nudibranchs are known.Ocean Portal (2017)A Collage of Nudibranch Colors Smithsonian National Museum of Natural History. Retrieved 17 April 2018. The word "nudibranch" comes from the Latin "naked" and the Ancient Greek () "gills". Nudibranchs are often casually called sea slugs, as they are a family of opistobranchs (sea slugs), within the phylum Mollusca (molluscs), but many sea slugs belong to several taxonomic groups which are not closely related to nudibranchs. A number of these other sea slugs, such as the photosynthetic ''Sacoglossa'' and the colourful Aglajidae, are often confused with nudibranchs. Distribut ... [...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, |
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] |
Mollusc
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 gastropods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
