|
Cheiragonidae
Cheiragonidae is a small family of crabs, sometimes called '' helmet crabs'', placed in its own superfamily, Cheriagonoidea. It comprises three extant species, '' Erimacrus isenbeckii'', '' Telmessus acutidens'' and ''Telmessus cheiragonus'', there are no yet evidences of Cheiragonidae in the fossil record. Many of these crabs were formerly treated as members of the Atelecyclidae Atelecyclidae is a family of crabs belonging to the superfamily Cancroidea, and currently contains eight genera of which two are extinct. However, the genera other than '' Atelecyclus'' and '' Pseudocorystes'' do not belong in the Cancroidea, and .... References External links * Crabs Extant Eocene first appearances Decapod families {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horsehair Crab
The horsehair crab, ''Erimacrus isenbeckii'' (Japanese: ケガニ, ''kegani''), is a species of crab which is found mainly in the Northwest Pacific, around the Hokkaido coast in the Sea of Okhotsk and the Western Bering Sea and is an important commercial species used in Japanese cuisine. Despite the importance of the species, biological studies are usually specialized and limited. The catch for the species reached a peak in the 1950s at 27,000 tons and has decreased since, reaching 2,000 tons in 2003. Due to the commercial importance of the species, many stock enhancement programs have been utilized to help maintain a successful fishery. The species is commonly found on sandy benthic environments from shallow water to depths of up to 350 meters. Biology and description ''E. isenbeckii'' has a hard shell and soft spines which cover the shell and appendages. It can reach over 1 kg in weight. ''Erimacrus isenbeckii'' is known to feed three to four times in a ten to twelve hour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Edward Ortmann
Arnold Edward Ortmann (April 8, 1863 – January 3, 1927) was a Prussian-born United States naturalist and zoologist who specialized in malacology. Biography Ortmann was born in Magdeburg, Prussia on April 8, 1863. A student of Ernst Haeckel, he graduated from the University of Jena in 1885 with a Ph.D.; he had also studied at the University of Kiel and the University of Strasbourg. From 1886 on, he worked as an instructor at the University of Strasbourg. Together with Haeckel, he participated in an expedition to Zanzibar in 1890/91. Three years later, he emigrated to the United States, where he got a post as the curator of the department of invertebrate paleontology at Princeton University. In 1899, he participated in the Peary Relief expedition, and one year later, he was naturalized as a U.S. citizen. In 1903, he moved to Pittsburgh. He became the curator of invertebrate zoology at the Carnegie Museum and from 1910 on, he was professor of physical geography at the Univers ... [...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 opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crab
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the world's oceans, in freshwater, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. They first appeared during the Jurassic Period. Description Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a pair of chelae (claws). Crabs vary in size from the pea crab, a few millimeters wide, to the Japanese spider crab, with a leg span up to . Several other groups of crustaceans with similar appearances – such as king crabs and porcelain crabs – are not true crabs, but have evolved features similar to true crabs through a process known as carcinisation. Environment Crabs are found in all of the world's oceans, as well as in fresh w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helmet Crab
''Corystes cassivelaunus'', the masked crab, helmet crab or sand crab, is a burrowing crab of the North Atlantic and North Sea from Portugal to Norway, which also occurs in the Mediterranean Sea. It may grow up to long (carapace length). The name "masked crab" derives from the patterns on the carapace which resemble a human face (a case of pareidolia), in a similar manner to ''heikegani''. It is the only species in the genus ''Corystes''. ''C. cassivelaunus'' lives buried in sandy substrates, where it feeds on the infaunal invertebrates such as polychaete worms and bivalve molluscs. It uses its two antennae to form a breathing tube that allows oxygenated water down into the substrate. The cheliped A chela ()also called a claw, nipper, or pinceris a pincer-like organ at the end of certain limbs of some arthropods. The name comes from Ancient Greek , through New Latin '. The plural form is chelae. Legs bearing a chela are called chelipeds. ...s of males are much longer than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomic Rank
In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family (biology), family, order (biology), order, class (biology), class, phylum (biology), phylum, kingdom (biology), kingdom, domain (biology), domain. While older approaches to taxonomic classification were phenomenological, forming groups on the basis of similarities in appearance, organic structure and behaviour, methods based on genetic analysis have opened the road to cladistics. A given rank subsumes under it less general categories, that is, more specific descriptions of life forms. Above it, each rank is classified within more general categories of organisms and groups of organisms related to each other through inheritance of phenotypic trait, traits or features from common ancestors. The rank of any ''species'' and the description of its ''genus'' is ''basic''; which means that to iden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raffles Bulletin Of Zoology
''The Raffles Bulletin of Zoology'' is a peer-reviewed open-access scientific journal published by the Lee Kong Chian Natural History Museum at the National University of Singapore. It covers the taxonomy, ecology, and conservation of Southeast Asian fauna.Supplements are published as and when funding permits and may cover topics that extend beyond the normal scope of the journal depending on the targets of the funding agency. It was established as the ''Bulletin of the Raffles Museum'' in 1928 and renamed ''Bulletin of the National Museum of Singapore'' in 1961, before obtaining its current title in 1971. See also * List of zoology journals This is a list of scientific journals which cover the field of zoology. A * '' Acta Entomologica Musei Nationalis Pragae'' * '' Acta Zoologica Academiae Scientiarum Hungaricae'' * '' Acta Zoologica Bulgarica'' * ''Acta Zoologica Mexicana'' * '' ... References Zoology journals Biannual journals Open access journals English-language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telmessus Acutidens
Telmessos or Telmessus ( Hittite: 𒆪𒉿𒆷𒉺𒀸𒊭 ''Kuwalapašša'', Lycian: 𐊗𐊁𐊍𐊁𐊂𐊁𐊛𐊆 ''Telebehi'', grc, Τελμησσός), also Telmissus ( grc, Τελμισσός), later Anastasiopolis ( grc, Αναστασιούπολις), then Makri or Macre ( el, Μάκρη), was the largest city in Lycia, near the Carian border, and is sometimes confused with Telmessos in Caria. It was called Telebehi in the Lycian language. The well-protected harbor of Telmessos is separated from the Gulf of Telmessos by an island. The name of the modern town on the site is Fethiye. History The city was known as Kuwalapašša by the Hittites and Telebehi by the Lycians. According to the annals of Hattusili III, the city was a part of Lycia (which was known as Lukka at the time) and conquered by the Hittites. Another Hittite document mentions the cities of Kuwalapašša and Dalawa sent aid to Hittites during the war against Iyalanda. Telmessos was a flourishin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telmessus Cheiragonus
Telmessos or Telmessus ( Hittite: 𒆪𒉿𒆷𒉺𒀸𒊭 ''Kuwalapašša'', Lycian: 𐊗𐊁𐊍𐊁𐊂𐊁𐊛𐊆 ''Telebehi'', grc, Τελμησσός), also Telmissus ( grc, Τελμισσός), later Anastasiopolis ( grc, Αναστασιούπολις), then Makri or Macre ( el, Μάκρη), was the largest city in Lycia, near the Carian border, and is sometimes confused with Telmessos in Caria. It was called Telebehi in the Lycian language. The well-protected harbor of Telmessos is separated from the Gulf of Telmessos by an island. The name of the modern town on the site is Fethiye. History The city was known as Kuwalapašša by the Hittites and Telebehi by the Lycians. According to the annals of Hattusili III, the city was a part of Lycia (which was known as Lukka at the time) and conquered by the Hittites. Another Hittite document mentions the cities of Kuwalapašša and Dalawa sent aid to Hittites during the war against Iyalanda. Telmessos was a flourishin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boletín De La Sociedad Geológica Mexicana
The Mexican Geological Society (in Spanish: Sociedad Geológica Mexicana) is a Mexican learned society A learned society (; also learned academy, scholarly society, or academic association) is an organization that exists to promote an discipline (academia), academic discipline, profession, or a group of related disciplines such as the arts and s ... founded in 1904. Among the founders was geologist Dr. José G. Aguilera who also was the first president of the society. The society publishes the journal ''Boletín de la Sociedad Geológica Mexicana''. References External links * {{authority control Geology societies Geology of Mexico Scientific organizations based in Mexico ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atelecyclidae
Atelecyclidae is a family of crabs belonging to the superfamily Cancroidea, and currently contains eight genera of which two are extinct. However, the genera other than '' Atelecyclus'' and '' Pseudocorystes'' do not belong in the Cancroidea, and are to be removed from the family. *'' Atelecyclus'' *† '' Levicyclus'' *† '' Palaeotrichia'' *''Peltarion Peltarion is an Artificial intelligence, AI software company with offices in Stockholm and London. In June 2022, the company was acquired by the video game developer King (company), King, which is owned by Activision Blizzard. History Peltari ...'' *'' Podocatactes'' *'' Pseudocorystes'' *'' Protopeltarion'' *'' Trichopeltarion'' References Cancroidea Decapod families {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Museum Of Los Angeles County
The Natural History Museum of Los Angeles County is the largest natural and historical museum in the western United States. Its collections include nearly 35 million specimens and artifacts and cover 4.5 billion years of history. This large collection is comprised not only of specimens for exhibition, but also of vast research collections housed on and offsite. The museum is associated with two other museums in Greater Los Angeles: the Page Museum at the La Brea Tar Pits in Hancock Park and the William S. Hart Ranch and Museum in Newhall. The three museums work together to achieve their common mission: "to inspire wonder, discovery, and responsibility for our natural and cultural worlds." History NHM opened in Exposition Park, Los Angeles, California, United States in 1913 as The Museum of History, Science, and Art. The moving force behind it was a museum association founded in 1910. Its distinctive main building with fitted marble walls and domed and colonnaded rotunda, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Crab")
