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Bathynectes Maravigna
''Bathynectes'' is a genus of crabs in the family Polybiidae. Species * ''Bathynectes brevispina'' Stimpson, 1871 * ''Bathynectes longipes'' (Risso, 1816) * '' Bathynectes longispina'' Stimpson, 1871 * '' Bathynectes maravigna'' (Prestandrea, 1839) * ''Bathynectes piperitus ''Bathynectes piperitus'' is a species of crab in the family Polybiidae __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 ...'' Manning & Holthuis, 1981 * '' Bathynectes muelleri'' † Ossó & Stalennuy, 2011 References Portunoidea Crustaceans of the Atlantic Ocean {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathyal Swimming Crab
The bathyal swimming crab, ''Bathynectes longispina'', is a species of crab in the family Polybiidae. This species lives on seamount A seamount is a large geologic landform that rises from the ocean floor that does not reach to the water's surface (sea level), and thus is not an island, islet or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abru ...s and knolls, at depths as great as . It appears similar to other members of the portunid family, but has reduced swimming dactyls and long walking legs. As an adaptation to deep water, it has large eyes. References Portunoidea Crabs of the Atlantic Ocean Crustaceans described in 1879 {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Longispina
The bathyal swimming crab, ''Bathynectes longispina'', is a species of crab in the family Polybiidae. This species lives on seamount A seamount is a large geologic landform that rises from the ocean floor that does not reach to the water's surface (sea level), and thus is not an island, islet or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abru ...s and knolls, at depths as great as . It appears similar to other members of the portunid family, but has reduced swimming dactyls and long walking legs. As an adaptation to deep water, it has large eyes. References Portunoidea Crabs of the Atlantic Ocean Crustaceans described in 1879 {{crab-stub ... [...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] |
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] |
Polybiidae
__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 analyses. Description Their rather flat and smooth carapace is usually wider than long and of hexagonal, subhexagonal, rectangular, or transversely ovate shape. It is usually widest between the hindmost spines of the forward rim; there may be up to 9 pairs of these spines, with a few smaller ones right above the head, but they are missing altogether in some species. In some, the first maxilliped's endopod is lobed, forming the characteristic portunid lobe. The chelipeds are usually robust, and in some the last pereiopod pair has ovate dactyls. The sutures of the sternum between segments 4 to 8 are usually incomplete, and in the Portunidae, the eighth sternite is usually visible if seen from below and has a penial groove. In males, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Piperitus - Journal
''Bathynectes'' is a genus of crabs in the family Polybiidae. Species * ''Bathynectes brevispina'' Stimpson, 1871 * '' Bathynectes longipes'' (Risso, 1816) * '' Bathynectes longispina'' Stimpson, 1871 * '' Bathynectes maravigna'' (Prestandrea, 1839) * ''Bathynectes piperitus ''Bathynectes piperitus'' is a species of crab in the family Polybiidae __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 ...'' Manning & Holthuis, 1981 * '' Bathynectes muelleri'' † Ossó & Stalennuy, 2011 References Portunoidea Crustaceans of the Atlantic Ocean {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Brevispina
''Bathynectes'' is a genus of crabs in the family Polybiidae. Species * ''Bathynectes brevispina'' Stimpson, 1871 * ''Bathynectes longipes'' (Risso, 1816) * ''Bathynectes longispina'' Stimpson, 1871 * ''Bathynectes maravigna'' (Prestandrea, 1839) * ''Bathynectes piperitus'' Manning & Holthuis, 1981 * ''Bathynectes muelleri'' † Ossó & Stalennuy, 2011 References Portunoidea Crustaceans of the Atlantic Ocean {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Longipes
''Bathynectes'' is a genus of crabs in the family Polybiidae. Species * ''Bathynectes brevispina'' Stimpson, 1871 * '' Bathynectes longipes'' (Risso, 1816) * '' Bathynectes longispina'' Stimpson, 1871 * '' Bathynectes maravigna'' (Prestandrea, 1839) * ''Bathynectes piperitus ''Bathynectes piperitus'' is a species of crab in the family Polybiidae __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 ...'' Manning & Holthuis, 1981 * '' Bathynectes muelleri'' † Ossó & Stalennuy, 2011 References Portunoidea Crustaceans of the Atlantic Ocean {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Maravigna
''Bathynectes'' is a genus of crabs in the family Polybiidae. Species * ''Bathynectes brevispina'' Stimpson, 1871 * ''Bathynectes longipes'' (Risso, 1816) * '' Bathynectes longispina'' Stimpson, 1871 * '' Bathynectes maravigna'' (Prestandrea, 1839) * ''Bathynectes piperitus ''Bathynectes piperitus'' is a species of crab in the family Polybiidae __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 ...'' Manning & Holthuis, 1981 * '' Bathynectes muelleri'' † Ossó & Stalennuy, 2011 References Portunoidea Crustaceans of the Atlantic Ocean {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Piperitus
''Bathynectes piperitus'' is a species of crab in the family Polybiidae __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 analyses. .... It is found in Angola, Cabinda, Cape Verde, Fao Fishing Area, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Senegal, and West Africa. References Further reading * * * * Decapods Crustaceans described in 1981 Taxa named by Raymond B. Manning Taxa named by Lipke Holthuis {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathynectes Muelleri
''Bathynectes muelleri'' is an extinct species of polybiid crab and the oldest known species of the genus ''Bathynectes''. It lived in the Central Paratethys The Paratethys sea, Paratethys ocean, Paratethys realm or just Paratethys was a large shallow inland sea that stretched from the region north of the Alps over Central Europe to the Aral Sea in Central Asia. Paratethys was peculiar due to its pa ... of modern-day Ukraine during the Badenian age( Langhian, middle Miocene ). While extant species of ''Bathynectes'' live mainly in deep water habitats, ''B. muelleri'' fossils were found in sediments indicative of shallow water habitats, suggesting the earliest ''Bathynectes'' originated in shallow waters, and descendent species migrated to deep-water habitats. References Portunoidea Miocene crustaceans Fossil taxa described in 2011 Prehistoric life of Europe {{paleo-crustacean-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 analyses. Description Their rather flat and smooth carapace is usually wider than long and of hexagonal, subhexagonal, rectangular, or transversely ovate shape. It is usually widest between the hindmost spines of the forward rim; there may be up to 9 pairs of these spines, with a few smaller ones right above the head, but they are missing altogether in some species. In some, the first maxilliped's endopod is lobed, forming the characteristic portunid lobe. The chelipeds are usually robust, and in some the last pereiopod pair has ovate dactyls. The sutures of the sternum between segments 4 to 8 are usually incomplete, and in the Portunidae, the eighth sternite is usually visible if seen from below and has a penial groove. In males, the abdomi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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