|
Matutidae
Matutidae is a family of crabs, sometimes called ''moon crabs'', adapted for swimming or digging. They differ from the swimming crabs of the family Portunidae in that all five pairs of legs are flattened, rather than just the last pair, as in Portunidae. Crabs in the Matutidae are aggressive predators. Taxonomy Traditionally, this taxon contained the single genus ''Matuta'', and was considered a subfamily of the Calappidae. Now, the group is ranked as a family and six genera (four extant and two fossil) are now recognised. Although placed in the Calappoidea, it is not clear that Matutidae and Calappidae are closely related. *''Ashtoret'' Galil & P. F. Clark, 1994 *† '' Eomatuta'' De Angeli & Marchiori, 2009 *''Izanami'' Galil & P. F. Clark, 1994 *''Matuta'' Weber, 1795 *''Mebeli'' Galil & P. F. Clark, 1994 *† '' Szaboa'' Müller & Galil, 1998 Image:Ashtoret picta (photo Miguel Ramirez).jpg, ''Ashtoret picta'' Image:Specimen of Izanami curtispina.JPG, ''Izanami curtispina'' I ... [...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] |
Calappoidea
Calappoidea is a superfamily of crabs comprising the two families Calappidae and Matutidae. The earliest fossils attributable to the Calappoidea date from the Aptian The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), a .... References External links * Crabs Aptian first appearances Taxa named by Henri Milne-Edwards Arthropod superfamilies Extant Aptian first appearances {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashtoret Lunaris
''Ashtoret lunaris'', also known as the yellow moon crab, spotted moon crab or box crab, is an Indo-Pacific species of carnivorous crab which is a member of the family Matutidae. It has been recorded in the eastern Mediterranean since 2010, probably reaching that sea through the Suez Canal from the Red Sea by Lessepsian migration. Description ''Ashtoret lunaris'' has a carapace which has a finely grained texture, as well as six tubercles in the middle of the dorsal surface. It also has a linear tubercle along the middle of the posterior of the carapace. The front has straight lobes, with a lateral and slightly emarginated rostrum which is located in the centre and the front lateral margin has five small tubercles followed by three larger deltoid tubercles. The lateral spine is equal in length to a fifth of the carapace width. Chelipeds have a five-lobed ridge in the middle of the palm, the second and fourth lobes of which are pointed with the second lobe being the largest. There ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matuta Planipes
Matuta planipes is a species of moon crab in the family Matutidae Matutidae is a family of crabs, sometimes called ''moon crabs'', adapted for swimming or digging. They differ from the swimming crabs of the family Portunidae in that all five pairs of legs are flattened, rather than just the last pair, as in Por .... It is a small colorful crab with flattened limbs. The Matuta planipes, in contrast to other species of crabs inhale pure oxygen-water through an area near their eye sockets. This species of crabs enjoy spending their daytime hidden under some sort of shade such as a sand bed and they are more active during the night. References Calappoidea Crustaceans described in 1798 {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matuta Victor
''Matuta'' is a genus of crabs in the family Matutidae, containing the following species:= * ''Matuta circulifera'' Miers, 1880 * ''Matuta inermis'' Brocchi, 1883 * ''Matuta planipes'' Fabricius, 1798 * ''Matuta purnama'' Lai & Galil, 2007 * ''Matuta victor ''Matuta'' is a genus of crabs in the family Matutidae, containing the following species:= * '' Matuta circulifera'' Miers, 1880 * '' Matuta inermis'' Brocchi, 1883 * ''Matuta planipes Matuta planipes is a species of moon crab in the fami ...'' (Fabricius, 1781) References Calappoidea {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashtoret Picta
''Ashtoret'' is a genus of crabs in the family Matutidae, containing the following species: * '' Ashtoret granulosa'' (Miers, 1877) * ''Ashtoret lunaris'' (Forskål, 1775) * '' Ashtoret maculata'' (Miers, 1877) * '' Ashtoret miersii'' (Henderson, 1887) * '' Ashtoret obtusifrons'' (Miers, 1877) * ''Ashtoret picta'' (Hess, 1865) * '' Ashtoret sangiannulata'' Galil & Clark, 1994 * '' Ashtoret shengmuae'' Galil & Clark, 1994 Image:Ashtoret lunaris.jpg, ''Ashtoret lunaris'' Image:Ashtoret picta (photo Miguel Ramirez).jpg, ''Ashtoret picta'' In addition, a single, unnamed, fossil species is known from the Miocene of Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north .... References Calappoidea Extant Miocene first appearances {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mebeli
''Mebeli michaelseni'' is a species of crab in the family Matutidae Matutidae is a family of crabs, sometimes called ''moon crabs'', adapted for swimming or digging. They differ from the swimming crabs of the family Portunidae in that all five pairs of legs are flattened, rather than just the last pair, as in Por ..., the only species in the genus ''Mebeli''. References Calappoidea Monotypic arthropod genera {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Izanami (genus)
''Izanami'' is a genus of crabs in the family Matutidae, containing the following species: * ''Izanami curtispina'' (Sakai, 1961) * ''Izanami reticulata , formally known as , is the creator deity of both creation and death in Japanese mythology, as well as the Shinto mother goddess. She and her brother-husband Izanagi are the last of the seven generations of primordial deities that manifest ...'' Müller & Galil, 1998 References Calappoidea {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashtoret
''Ashtoret'' is a genus of crabs in the family Matutidae, containing the following species: * '' Ashtoret granulosa'' (Miers, 1877) * ''Ashtoret lunaris'' (Forskål, 1775) * '' Ashtoret maculata'' (Miers, 1877) * '' Ashtoret miersii'' (Henderson, 1887) * '' Ashtoret obtusifrons'' (Miers, 1877) * ''Ashtoret picta'' (Hess, 1865) * '' Ashtoret sangiannulata'' Galil & Clark, 1994 * '' Ashtoret shengmuae'' Galil & Clark, 1994 Image:Ashtoret lunaris.jpg, ''Ashtoret lunaris'' Image:Ashtoret picta (photo Miguel Ramirez).jpg, ''Ashtoret picta'' In addition, a single, unnamed, fossil species is known from the Miocene of Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north .... References Calappoidea Extant Miocene first appearances {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matuta
''Matuta'' is a genus of crabs in the family Matutidae, containing the following species:= * ''Matuta circulifera'' Miers, 1880 * ''Matuta inermis'' Brocchi, 1883 * ''Matuta planipes'' Fabricius, 1798 * ''Matuta purnama'' Lai & Galil, 2007 * ''Matuta victor ''Matuta'' is a genus of crabs in the family Matutidae, containing the following species:= * ''Matuta circulifera'' Miers, 1880 * ''Matuta inermis'' Brocchi, 1883 * ''Matuta planipes'' Fabricius, 1798 * ''Matuta purnama'' Lai & Galil, 2007 * ...'' (Fabricius, 1781) References Calappoidea {{Crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Document Format
Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.Adobe Systems IncorporatedPDF Reference, Sixth edition, version 1.23 (53 MB) Nov 2006, p. 33. Archiv/ref> Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images and other information needed to display it. PDF has its roots in "The Camelot Project" initiated by Adobe co-founder John Warnock in 1991. PDF was standardized as ISO 32000 in 2008. The last edition as ISO 32000-2:2020 was published in December 2020. PDF files may contain a variety of content besides flat text and graphics including logical structuring elements, interactive elements such as annotations and form-fields, layers, rich media (including video con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Crab")
