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Loxorhynchus
''Loxorhynchus'' is a genus of crabs of the eastern Pacific Ocean in the family Epialtidae. Species * '' Loxorhynchus crispatus'' Stimpson, 1857 — masking crab or moss crab * ''Loxorhynchus grandis ''Loxorhynchus grandis'', commonly known as the sheep crab or spider crab, is a species of crab in the family Epialtidae. It is the largest crab found on the California coast. The species was first described to science by William Stimpson ...'' Stimpson, 1857 — sheep crab * '' Loxorhynchus guinotae'' Hendrickx & Cervantes, 2003 References . Majoidea Crustaceans of the eastern Pacific Ocean Taxa named by William Stimpson {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxorhynchus Grandis
''Loxorhynchus grandis'', commonly known as the sheep crab or spider crab, is a species of crab in the family Epialtidae. It is the largest crab found on the California coast. The species was first described to science by William Stimpson in 1857. The type specimen was collected on the coast of California, near San Francisco. Fossils from the late Miocene epoch indicate that this species is at least 11.63 to 5.333 million years old. Description The sheep crab has a carapace, four sets of walking legs, and a set of claws, or chelipeds. Males are larger than females. The carapace of a male can be over across, while females can grow to . The carapace is tear-shaped with a wide, rounded posterior which tapers to a point at its snout, or rostrum. There is an obvious preorbital spine on the tip of the rostrum, which is sharply down-curved and deeply notched at its tip. The carapace is covered in short spines, or tubercles. The longest legs, the second pair of wal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxorhynchus Guinotae
''Loxorhynchus'' is a genus of crabs of the eastern Pacific Ocean in the family Epialtidae. Species * '' Loxorhynchus crispatus'' Stimpson, 1857 — masking crab or moss crab * ''Loxorhynchus grandis ''Loxorhynchus grandis'', commonly known as the sheep crab or spider crab, is a species of crab in the family Epialtidae. It is the largest crab found on the California coast. The species was first described to science by William Stimpson ...'' Stimpson, 1857 — sheep crab * '' Loxorhynchus guinotae'' Hendrickx & Cervantes, 2003 References . Majoidea Crustaceans of the eastern Pacific Ocean Taxa named by William Stimpson {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loxorhynchus Crispatus
''Loxorhynchus crispatus'', known generally as the masking crab or moss crab, is a species of true crab in the family Epialtidae Epialtidae is a family of crabs, containing the subfamilies: * Epialtinae MacLeay, 1838 * Pisinae Pisinae is a subfamily of crabs in the family Epialtidae, comprising the following genera: * '' Acanthophrys'' A. Milne-Edwards, 1865 * '' A .... It is found in the East Pacific. References Further reading * decapods Articles created by Qbugbot Crustaceans described in 1857 {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Stimpson
William Stimpson (February 14, 1832 – May 26, 1872) was a noted American scientist. He was interested particularly in marine biology. Stimpson became an important early contributor to the work of the Smithsonian Institution and later, director of the Chicago Academy of Sciences. Biography Stimpson was born in Boston, Massachusetts to Herbert Hathorne Stimpson and Mary Ann Devereau Brewer. The Stimpsons were of the colonial stock of Massachusetts, the earliest known member of the family being James Stimpson, who was married in 1661, in Milton. His mother died at an early age. William Stimpson's father was an ingenious inventor, and a leading merchant of Boston in the mid decades of the nineteenth century, trading as "H. & F. Stimpson, stoves and furnaces, corner of Congress and Water Streets. It was he who invented the "Stimpson range", the first sheet-iron cooking stove, famous in its day throughout New England. He also made improvements in rifles, and suggested the plac ... [...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] |
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 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epialtidae
Epialtidae is a family of crabs, containing the subfamilies: * Epialtinae MacLeay, 1838 * Pisinae Pisinae is a subfamily of crabs in the family Epialtidae, comprising the following genera: * '' Acanthophrys'' A. Milne-Edwards, 1865 * '' Anamathia'' Smith, 1885 * '' Apias'' Rathbun, 1897 * '' Apiomithrax'' Rathbun, 1897 * '' Austrolibinia'' ... Dana, 1851 * Pliosomatinae Števčić, 1994 * Tychinae Dana, 1851 * Actinotocarcininae References Majoidea Decapod families {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceana
''Crustaceana'' is a peer-reviewed scientific journal specialising in carcinology. It was established in 1960 and is published monthly by Brill Publishers. The journal is abstracted and indexed by BIOSIS Previews, the Science Citation Index, The Zoological Record, and GeoRef. According to the ''Journal Citation Reports'', the journal has a 2011 impact factor of 0.464. The journal is edited by J.C. von Vaupel Klein. It charges an unspecified publication fee from authors of all regular papers, and an optional open access Open access (OA) is a set of principles and a range of practices through which research outputs are distributed online, free of access charges or other barriers. With open access strictly defined (according to the 2001 definition), or libre o ... fee of USD 1830.CrustaceanaInstructions for Authors Brill Publishers References External links * *{{Official website, http://www.brill.nl/crustaceana Carcinology journals Publications established in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Majoidea
The Majoidea are a superfamily of crabs which includes the various spider crabs. Taxonomy In "''A classification of living and fossil genera of decapod crustaceans''" De Grave and colleagues divided Majoidea into six families: * Family Epialtidae ** Subfamily Epialtinae ** Subfamily Pisinae ** Subfamily Pliosomatinae ** Subfamily Tychiinae * Family Hymenosomatidae * Family Inachidae * Family Inachoididae * Family Majidae ** Subfamily Eurynolambrinae ** Subfamily Majinae ** Subfamily Micromaiinae ** Subfamily Mithracinae ** Subfamily Planoterginae * Family Oregoniidae The classification has since been revised, with subfamilies Epialtinae and Mithracinae being elevated to families and Hymenosomatidae being moved to its own superfamily. The family composition according to the World Register of Marine Species is as follows: * family Epialtidae MacLeay, 1838 * family Inachidae MacLeay, 1838 * family Inachoididae Dana, 1851 * family Macrocheiridae Dana, 1851 * family Majidae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceans Of The Eastern Pacific Ocean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans ( Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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