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Plicatulidae
The Plicatulidae are a family of saltwater clams, marine bivalve mollusks, known commonly as kitten's paws or kittenpaws.Abbott, R.T. & Morris, P.A. ''A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies.'' New York: Houghton Mifflin, 1995. 34. These bivalves are related to oysters and scallops. The family has a single living genus, ''Plicatula'', with a second, ''Harpax'' known from fossils. Description Plicatulidae are small, with weakly convex shells which are irregularly oval or even almost triangular. Typically, they attach themselves to a hard surface by the right valve. The ligament is internal and triangular. Life cycle Plicatulidae members start off in the larval stage. Genera and species * ''Harpax'' Parkinson, 1811 * ''Plicatula'' Lamarck, 1801 * † '' Pseudoplacunopsis'' Bittner, 1895 *'' Plicastulostrea onca'': synonym of ''Plicatula australis Plicatula is a genus of saltwater clams, marine bivalve molluscs, known commonly as kitten's paws or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plicatulidae
The Plicatulidae are a family of saltwater clams, marine bivalve mollusks, known commonly as kitten's paws or kittenpaws.Abbott, R.T. & Morris, P.A. ''A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies.'' New York: Houghton Mifflin, 1995. 34. These bivalves are related to oysters and scallops. The family has a single living genus, ''Plicatula'', with a second, ''Harpax'' known from fossils. Description Plicatulidae are small, with weakly convex shells which are irregularly oval or even almost triangular. Typically, they attach themselves to a hard surface by the right valve. The ligament is internal and triangular. Life cycle Plicatulidae members start off in the larval stage. Genera and species * ''Harpax'' Parkinson, 1811 * ''Plicatula'' Lamarck, 1801 * † '' Pseudoplacunopsis'' Bittner, 1895 *'' Plicastulostrea onca'': synonym of ''Plicatula australis Plicatula is a genus of saltwater clams, marine bivalve molluscs, known commonly as kitten's paws or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plicatula
Plicatula is a genus of saltwater clams, marine bivalve molluscs, known commonly as kitten's paws or kittenpaws in the family Plicatulidae. MolluscaBase eds. (2022). MolluscaBase. Plicatula Lamarck, 1801. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=204437 on 2022-01-31 Species * '' Plicatula angolensis'' Cosel, 1995 * '' Plicatula anomioides'' Keen, 1958 * '' Plicatula australis'' Lamarck, 1819 * '' Plicatula ceylanica'' G. B. Sowerby II, 1873 * ''Plicatula complanata'' Deshayes, 1863 * '' Plicatula dubia'' G. B. Sowerby II, 1847 * '' Plicatula gibbosa'' Lamarck, 1801 * '' Plicatula horrida'' Dunker, 1882 * † '' Plicatula hunterae'' Shaak and Nicol, 1974 * † '' Plicatula megaera'' (d'Orbigny, 1850) * '' Plicatula miskito'' Petuch, 1998 * '' Plicatula muricata'' G. B. Sowerby II, 1873 * '' Plicatula novaezelandiae'' G. B. Sowerby II, 1873 * '' Plicatula penicillata'' Carpenter, 1857 * '' Plicatula pernula'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plicatula Australis
Plicatula is a genus of saltwater clams, marine bivalve molluscs, known commonly as kitten's paws or kittenpaws in the family Plicatulidae. MolluscaBase eds. (2022). MolluscaBase. Plicatula Lamarck, 1801. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=204437 on 2022-01-31 Species * '' Plicatula angolensis'' Cosel, 1995 * '' Plicatula anomioides'' Keen, 1958 * '' Plicatula australis'' Lamarck, 1819 * '' Plicatula ceylanica'' G. B. Sowerby II, 1873 * ''Plicatula complanata'' Deshayes, 1863 * '' Plicatula dubia'' G. B. Sowerby II, 1847 * '' Plicatula gibbosa'' Lamarck, 1801 * ''Plicatula horrida'' Dunker, 1882 * † '' Plicatula hunterae'' Shaak and Nicol, 1974 * † ''Plicatula megaera'' (d'Orbigny, 1850) * ''Plicatula miskito'' Petuch, 1998 * ''Plicatula muricata'' G. B. Sowerby II, 1873 * '' Plicatula novaezelandiae'' G. B. Sowerby II, 1873 * '' Plicatula penicillata'' Carpenter, 1857 * ''Plicatula pernula'' Melvi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plicatula Gibbosa
''Plicatula gibbosa'', or the Atlantic kitten's paw, is a species of bivalve mollusc in the family Plicatulidae. Description The size of the shell attains 38.6 mm. Distribution It can be found along the Atlantic coast of North America, ranging from North Carolina to the West Indies The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greate ....Abbott, R.T. & Morris, P.A. ''A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies.'' New York: Houghton Mifflin, 1995. 34. References * Jensen, R. H. (1997). A Checklist and Bibliography of the Marine Molluscs of Bermuda. Unp. , 547 pp * Turgeon, D. D., W. G. Lyons, P. Mikkelsen, G. Rosenberg, and F. Moretzsohn. 2009. Bivalvia (Mollusca) of the Gulf of Mexico, Pp. 711–744 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of marine and freshwater Mollusca, molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bivalves have no head and they lack some usual molluscan organs, like the radula and the odontophore. They include the clams, oysters, Cockle (bivalve), cockles, mussels, scallops, and numerous other family (biology), families that live in saltwater, as well as a number of families that live in freshwater. The majority are filter feeders. The gills have evolved into Ctenidium (mollusc), ctenidia, specialised organs for feeding and breathing. Most bivalves bury themselves in sediment, where they are relatively safe from predation. Others lie on the sea floor or attach themselves to rocks or other hard surfaces. Some bivalves, such as the scallops and file shells, can nekton, swim. The shipworms bore into wood, clay, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 Taxonomy (biology), taxonomic class (biology), classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurobiology, neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but not all oysters are in the superfamily Ostreoidea. Some types of oysters are commonly consumed (cooked or raw), and in some locales are regarded as a delicacy. Some types of pearl oysters are harvested for the pearl produced within the mantle. Windowpane oysters are harvested for their translucent shells, which are used to make various kinds of decorative objects. Etymology The word ''oyster'' comes from Old French , and first appeared in English during the 14th century. The French derived from the Latin , the feminine form of , which is the latinisation of the Ancient Greek () 'oyster'. Compare () 'bone'. Types True oysters True oysters are members of the family Ostreidae. This family includes the edible oysters, which mainly b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scallop
Scallop () is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related families within the superfamily Pectinoidea, which also includes the thorny oysters. Scallops are a cosmopolitan family of bivalves found in all of the world's oceans, although never in fresh water. They are one of the very few groups of bivalves to be primarily "free-living", with many species capable of rapidly swimming short distances and even migrating some distance across the ocean floor. A small minority of scallop species live cemented to rocky substrates as adults, while others attach themselves to stationary or rooted objects such as seagrass at some point in their lives by means of a filament they secrete called a byssal thread. The majority of species, however, live recumbent on sandy substrates, and when they sense the presence of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harpax
The ''harpax'' or ''harpago'' ( ''lit.'' "grabber, seizer, robber"; GEN ''harpagos'') was a Roman catapult-shot grapnel created by Marcus Vipsanius Agrippa for use against Sextus Pompey during the naval battles of the Sicilian revolt. The harpax allowed an enemy vessel to be harpooned and then winched alongside for boarding. It was first deployed at the Battle of Naulochus in 36 BC. Appian explains the device was "called the 'grip', a piece of wood, five cubits long bound with iron and having rings at the extremities. To one of these rings was attached the grip itself, an iron claw, to the other numerous ropes, which drew it by machine power after it had been thrown by a catapult and had seized the enemy's ships." The harpax had a distinct advantage over the traditional naval boarding device, the corvus, in that it was much lighter. The corvus boarding bridge is estimated to have weighed a ton. The harpax could be thrown long distances due its light weight. It was discharg ... [...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 opin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oval
An oval () is a closed curve in a plane which resembles the outline of an egg. The term is not very specific, but in some areas (projective geometry, technical drawing, etc.) it is given a more precise definition, which may include either one or two axes of symmetry of an ellipse. In common English, the term is used in a broader sense: any shape which reminds one of an egg. The three-dimensional version of an oval is called an ovoid. Oval in geometry The term oval when used to describe curves in geometry is not well-defined, except in the context of projective geometry. Many distinct curves are commonly called ovals or are said to have an "oval shape". Generally, to be called an oval, a plane curve should ''resemble'' the outline of an egg or an ellipse. In particular, these are common traits of ovals: * they are differentiable (smooth-looking), simple (not self-intersecting), convex, closed, plane curves; * their shape does not depart much from that of an ellipse, and * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ligament
A ligament is the fibrous connective tissue that connects bones to other bones. It is also known as ''articular ligament'', ''articular larua'', ''fibrous ligament'', or ''true ligament''. Other ligaments in the body include the: * Peritoneal ligament: a fold of peritoneum or other membranes. * Fetal remnant ligament: the remnants of a fetal tubular structure. * Periodontal ligament: a group of fibers that attach the cementum of teeth to the surrounding alveolar bone. Ligaments are similar to tendons and fasciae as they are all made of connective tissue. The differences among them are in the connections that they make: ligaments connect one bone to another bone, tendons connect muscle to bone, and fasciae connect muscles to other muscles. These are all found in the skeletal system of the human body. Ligaments cannot usually be regenerated naturally; however, there are periodontal ligament stem cells located near the periodontal ligament which are involved in the adult reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
