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Cancridae
Cancridae is a family of crabs. It comprises six extant genera, and ten exclusively fossil genera, in two subfamilies: Extant Genera Cancrinae Latreille, 1802 *'' Anatolikos'' Schweitzer & Feldmann, 2000 * ''Cancer'' Linnaeus, 1758 *''Glebocarcinus'' Nations, 1975 *'' Metacarcinus'' A. Milne-Edwards, 1862 *'' Platepistoma'' Rathbun, 1906 *'' Romaleon'' Gistel, 1848 Fossils Cancrinae Latreille, 1802 *†'' Anisospinos'' Schweitzer & Feldmann, 2000 *†'' Ceronnectes'' De Angeli & Beschin, 1998 *†'' Cyclocancer'' Beurlen, 1958 *†'' Microdium'' Reuss, 1867 *†'' Notocarcinus'' Schweitzer & Feldmann, 2000 *†'' Santeecarcinus'' Blow & Manning, 1996 *†'' Sarahcarcinus'' Blow & Manning, 1996 † Lobocarcininae Beurlen, 1930 *†'' Lobocarcinus'' Reuss, 1857 *†'' Miocyclus'' Müller, 1978 *†'' Tasadia'' Müller ''in'' Janssen & Müller, 1984 Until 2000, the extant species were all classified in genus ''Cancer''. After an analysis of new fossil material, the subgenera were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatolikos
''Anatolikos'' is a genus of two species of crabs in the family Cancridae. They are recorded from JapanSchweitzer, C. E. and R. M. Feldmann. (2000)Re-evaluation of the Cancridae Latreille, 1802 (Decapoda: Brachyura) including three new genera and three new species.''Contributions to Zoology'' 69(4), 223-50. and Taiwan.Tavares, M. and R. Cleva. (2010)Trichopeltariidae (Crustacea, Decapoda, Brachyura), a new family and superfamily of eubrachyuran crabs with description of one new genus and five new species.''Papéis Avulsos de Zoologia (São Paulo)'' 50(9), 97-157. Two fossil species are known, one from Japan and one from Mexico.Schweitzer, C. E., et al. (2006)New Decapoda (Anomura, Brachyura) from the Eocene Bateque and Tepetate Formations, Baja California Sur, México. ''Bulletin of the Mizunami Fossil Museum'' 33(2006), 1-14. These crabs were classified in the genus ''Cancer'' until 2000, when it was split into several new genera. ''Anatolikos'' species have a carapace that is w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cancroidea
Cancroidea is a superfamily of crabs, comprising the families Atelecyclidae and Cancridae. http://boletinsgm.igeolcu.unam.mx/bsgm/vols/epoca04/6502/%2810%29Osso.pdf Four other families have been separated into new superfamilies: Cheiragonidae into Cheiragonoidea, Corystidae into Corystoidea, and both Pirimelidae and Thiidae into Portunoidea __NOTOC__ Portunoidea is a superfamily of crabs that includes the family Portunidae, the swimming crabs. Which other crab families are also placed here is a matter of some contention, and may be revised following molecular phylogenetic analyse .... Montezumellidae has been moved from Cancroidea to his own Superfamily Montezumelloidea Ossó & Domínguez, 2019 (Zootaxa, 4623 (1): 175–188). References Crabs Arthropod superfamilies {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cancer (genus)
''Cancer'' is a genus of marine crabs in the family Cancridae. It includes eight extant species and three extinct species, including familiar crabs of the littoral zone, such as the European edible crab (''Cancer pagurus''), the Jonah crab (''Cancer borealis'') and the red rock crab ('' Cancer productus''). It is thought to have evolved from related genera in the Pacific Ocean in the Miocene. Description The species placed in the genus ''Cancer'' are united by the presence of a single posterolateral spine (on the edge of the carapace, towards the rear), anterolateral spines with deep fissures (on the carapace edge, towards the front), and a short extension of the carapace forward between the eyes. Their claws are typically short, with grainy or smooth, rather than spiny, keels. The carapace is typically oval, being 58%–66% as long as wide, and the eyes separated by 22%–29% of the carapace width. Species The genus ''Cancer'', as currently circumscribed, contains eight extan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romaleon
''Romaleon'' is a genus of marine crabs formerly considered in the genus ''Cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...''. Also available aPDF Species The genus, as currently circumscribed, contains seven species: References Cancroidea {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lobocarcinus
''Lobocarcinus'' is a genus of extinct marine crabs that lived in the Eocene through Pliocene, containing these species: *''Lobocarcinus sismondai'' *''Lobocarcinus lumacopius'' * ''Lobocarcinus pustulosus'' * ''Lobocarcinus paulinowurtemberbensis'' * ''Lobocarcinus indicus'' * ''Lobocarcinus aegypticus ''Lobocarcinus'' is a genus of extinct marine crabs that lived in the Eocene through Pliocene, containing these species: *'' Lobocarcinus sismondai'' *''Lobocarcinus lumacopius'' * ''Lobocarcinus pustulosus ''Lobocarcinus'' is a genus of exti ...'' References Cancroidea Prehistoric Malacostraca Prehistoric crustacean genera Neogene arthropods Prehistoric life of Europe Eocene genus first appearances Pliocene genus extinctions {{paleo-crustacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metacarcinus
''Metacarcinus'' is a genus of crabs formerly included in the genus ''Cancer''. It includes nine exclusively fossil species and five extant species, of which four are also known from the fossil record. A molecular study using the cytochrome oxidase I gene does not support the monophyly of this genus. Description ''Metacarcinus'' crabs have an oval carapace of about ⅔ of its largest width, with a surface with poorly marked division of smooth or gently colored regions. The front edge usually does not protrude before orbital, and the total length of these edges is 26–34% of the largest width of the carapace, with 5 spikes, including inner orbits, of which the middle springs lower than the others. 9–10 spikes are located on both anteroposterior lateral sides of the carapace; they can be of different shapes. The lateral edges are edged and can have one spike. The claws propodite is characterized by an upper edge at an angle of about 120° to the distal edge, equipped with shar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cancer Pagurus
''Cancer pagurus'', commonly known as the edible crab or brown crab, is a species of crab found in the North Sea, North Atlantic Ocean, and perhaps the Mediterranean Sea. It is a robust crab of a reddish-brown colour, having an oval carapace with a characteristic "pie crust" edge and black tips to the claws. A mature adult may have a carapace width up to and weigh up to . ''C. pagurus'' is a nocturnal predator, targeting a range of molluscs and crustaceans. It is the subject of the largest crab fishery in Western Europe, centred on the coasts of the British Isles, with more than 60,000 tonnes caught annually. Description The carapace of ''C. pagurus'' adults is a reddish-brown colour, while in young specimens it is purple-brown. It occasionally bears white patches, and is shaped along the front edge into nine rounded lobes, resembling a pie crust. Males typically have a carapace long, and females long, although they may reach up to long in exceptional cases. Carapace wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glebocarcinus
''Glebocarcinus'' is a genus of crabs formerly included in the genus ''Cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal b ...''. Species The genus contains two species: References Cancroidea {{Crab-stub ... [...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] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Hemisphere
The Northern Hemisphere is the half of Earth that is north of the Equator. For other planets in the Solar System, north is defined as being in the same celestial hemisphere relative to the invariable plane of the solar system as Earth's North Pole. Owing to Earth's axial tilt of 23.439281°, winter in the Northern Hemisphere lasts from the December solstice (typically December 21 UTC) to the March equinox (typically March 20 UTC), while summer lasts from the June solstice through to the September equinox (typically on 23 September UTC). The dates vary each year due to the difference between the calendar year and the astronomical year. Within the Northern Hemisphere, oceanic currents can change the weather patterns that affect many factors within the north coast. Such events include El Niño–Southern Oscillation. Trade winds blow from east to west just above the equator. The winds pull surface water with them, creating currents, which flow westward due to the Coriolis e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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