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Malleidae
Malleidae, or hammer oysters, is a family of saltwater clams. They are related to the pearl oysters, in the order PteriidaGofas, S. (2011). Malleidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23067 on 2012-01-02 and the superfamily Pterioidea. There are about 22 species in this family. The shells of most of these animals are T-shaped, with the hinge along the top of the T, and with the byssus emerging from the hinge. An oblique ligament holds the hinge. The shell is partially nacreous. There is a single, large adductor muscle. The exhalant current exits at the hinge. Most hammer oysters live in tropical, coralline areas. Genera * ''Malleus The ''malleus'', or hammer, is a hammer-shaped small bone or ossicle of the middle ear. It connects with the incus, and is attached to the inner surface of the eardrum. The word is Latin for 'hammer' or 'mallet'. It transmits the sound vibra ...'' Lamarck, 1799 * '' N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malleus (bivalve)
''Malleus'' is a genus of hammer oysters ( marine bivalve mollusks) in the family Malleidae Malleidae, or hammer oysters, is a family of saltwater clams. They are related to the pearl oysters, in the order PteriidaGofas, S. (2011). Malleidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p= .... This genus includes 27 known species. Characteristic of this genus is the unusual "hammer-shaped" outline of the valves. The shells are nearly equivalved, but the hinge line is extremely long and is at nearly a right angle to the rest of the valves, which grow ventrally. The viscera of the organism are arranged in an oval-shaped patch near the umbones of the valves. Species * '' Malleus albus'' Lamarck, 1819 * '' Malleus anatinus'' (Gmelin, 1791) * '' Malleus candeanus'' (d'Orbigny, 1853) * '' Malleus daemoniacus'' Reeve, 1858 * '' Malleus legumen'' Reeve, 1858 * '' Malleus malleus'' (Linnaeus, 1758) * '' Malleus meridianus'' Cotton, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malleidae
Malleidae, or hammer oysters, is a family of saltwater clams. They are related to the pearl oysters, in the order PteriidaGofas, S. (2011). Malleidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23067 on 2012-01-02 and the superfamily Pterioidea. There are about 22 species in this family. The shells of most of these animals are T-shaped, with the hinge along the top of the T, and with the byssus emerging from the hinge. An oblique ligament holds the hinge. The shell is partially nacreous. There is a single, large adductor muscle. The exhalant current exits at the hinge. Most hammer oysters live in tropical, coralline areas. Genera * ''Malleus The ''malleus'', or hammer, is a hammer-shaped small bone or ossicle of the middle ear. It connects with the incus, and is attached to the inner surface of the eardrum. The word is Latin for 'hammer' or 'mallet'. It transmits the sound vibra ...'' Lamarck, 1799 * '' N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pterioidea
Pterioidea is a superfamily of epifaunal marine bivalves mostly inhabiting continental shelf regions of tropical and subtropical oceans. The superfamily includes the economically-important saltwater pearl oysters as well as the oddly shaped hammer oysters (neither of which, however, is considered a true oyster). A number of species have found use as model organisms in the fields of medicine and science. It includes the following three accepted living families: * Malleidae, the hammer oysters, Lamarck, 1818 *Pteriidae, the pearl oysters, tree oysters, and winged oysters, Gray, 1847 (1820) * Pulvinitidae, a family of rare deep sea oysters, no common name, Stephenson, 1941 Fossil families include: *Family † Aviculopectinidae *Family †Bakevelliidae Bakevelliidae is an extinct family (biology), family of prehistoric bivalves that lived from the Late Mississippian age, Mississippian until the Middle Eocene. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteriida
The Pteriida are an order (biology), order of large and medium-sized Marine (ocean), marine bivalve mollusc, mollusks. It includes five families, among them the Pteriidae (pearl oysters and winged oysters). 2010 taxonomy In 2010, a new proposed classification system for the Bivalvia was published by Bieler, Carter & Coan, revising the classification of the Bivalvia, including the suborder Pteriida. *Superfamily Ambonychioidea **Family †Alatoconchidae **Family †Ambonychiidae **Family †Inoceramidae **Family †Lunulacardiidae **Family †Monopteriidae **Family †Myalinidae **Family †Mysidiellidae **Family †Ramonalinidae *Superfamily Pinnoidea **Family Pinnidae *Superfamily †Posidonioidea Neumayr, 1891 **Family †Posidoniidae Neumayr, 1891 (Devonian to Cretaceous) **Family †Aulacomyellidae Ichikawa, 1958 **Family †Daonellidae Neumayr, 1891 **Family †Halobiidae Kittl, 1912 (Devonian to Triassic) *Superfamily Pterioidea **Family †Bakevelliidae (Triassic to Eoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) 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". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Byssus
A byssus () is a bundle of filaments secreted by many species of bivalve mollusc that function to attach the mollusc to a solid surface. Species from several families of clams have a byssus, including pen shells ( Pinnidae), true mussels (Mytilidae), and Dreissenidae. Filaments Byssus filaments are created by certain kinds of marine and freshwater bivalve mollusks, which use the byssus to attach themselves to rocks, substrates, or seabeds. In edible mussels, the inedible byssus is commonly known as the "beard", and is removed before cooking. Many species of mussels secrete byssus threads to anchor themselves to surfaces, with families including the Mytilidae, Arcidae, Anomiidae, Pinnidae, Pectinidae, Dreissenidae, and Unionidae. Mechanics The byssus, or byssal complex, is composed of multiple extracellular collagenous threads that are placed radially by the mussel from a central stem. Each thread is composed of three regions: a corrugated proximal region close to the mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ligament
A ligament is a type of fibrous connective tissue in the body that connects bones to other bones. It also connects flight feathers to bones, in dinosaurs and birds. All 30,000 species of amniotes (land animals with internal bones) have ligaments. It is also known as ''articular ligament'', ''articular larua'', ''fibrous ligament'', or ''true ligament''. Comparative anatomy 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 regeneration of periodontist ligament. The study of ligaments is known as . Humans Other ligame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nacre
Nacre ( , ), also known as mother-of-pearl, is an organicinorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed. It is strong, resilient, and iridescent. Nacre is found in some of the most ancient lineages of bivalves, gastropods, and cephalopods. However, the inner layer in the great majority of mollusc shells is porcellaneous, not nacreous, and this usually results in a non-iridescent shine, or more rarely in non-nacreous iridescence such as ''flame structure'' as is found in conch pearls. The outer layer of cultured pearls and the inside layer of pearl oyster and freshwater pearl mussel shells are made of nacre. Other mollusc families that have a nacreous inner shell layer include marine gastropods such as the Haliotidae, the Trochidae and the Turbinidae. Physical characteristics Structure and appearance Nacre is composed of hexagonal platelets, called tablets, of aragonite (a form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adductor Muscle (Bivalvia)
The adductor muscles are the main muscular system in bivalve mollusc, mollusks (e.g. in clams, scallops, mussels, oysters, etc.). In many parts of the world, when people eat scallops, the adductor muscles are the only part of the animal which is eaten. Adductor muscles leave noticeable scars or marks on the interior of the shell's valves. Those marks (known as adductor muscle scars) are often used by scientists who are in the process of identifying empty shells to determine their correct Taxonomy (biology), taxonomic placement. Bivalve mollusks generally have either one or two adductor muscles. The muscles are strong enough to close the valves of the shell when they contract, and they are what enable the animal to close its valves tightly when necessary, such as when the bivalve is exposed to the air by low water levels, or when it is attacked by a predator. Most bivalve species have two adductor muscles, which are located on the anterior and posterior sides of the body. Some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coral
Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria. They typically form compact Colony (biology), colonies of many identical individual polyp (zoology), polyps. Coral species include the important Coral reef, reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "group" is a colony of very many cloning, genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in height. A set of tentacles surround a central mouth opening. Each polyp excretes an exoskeleton near the base. Over many generations, the colony thus creates a skeleton characteristic of the species which can measure up to several meters in size. Individual colonies grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously overnight, often around a full moon. Fertilized eggs form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vulsella (bivalve)
''Vulsella'' is a genus of bivalves belonging to the family Vulsellidae. The genus has almost cosmopolitan distribution. Species: *'' Vulsella angusta'' *'' Vulsella clarki'' *'' Vulsella deperdita'' *'' Vulsella fornicata'' *'' Vulsella grandicubitus'' *'' Vulsella laevigata'' *''Vulsella legumen Vulsella may refer to: * ''Vulsella'' (bivalve), a genus of bivalves in the family Malleidae * Vulsellum, a type of forceps {{Disambiguation ...'' *'' Vulsella margaritacea'' *'' Vulsella minor'' *'' Vulsella ovata'' *'' Vulsella pakistanica'' *'' Vulsella rugosa'' *'' Vulsella vulsella'' References {{Taxonbar, from=Q18583342 Ostreida Bivalve genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
