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Pseudochama Granti
''Pseudochama'' is a species of bivalve mollusc in the family Chamidae. Fossil records The genus is known from the Eocene to the Recent periods (age range: from 40.4 to 0.0 million years ago). Fossils shells have been found all over the world. Species Species within this genus include:Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 53. *'' Pseudochama cristella'' (Lamarck, 1819) *'' Pseudochama exogyra'' (Conrad, 1837) – Pacific jewelbox *'' Pseudochama granti'' Strong, 1934 – deep jewelbox *'' Pseudochama gryphina'' (Lamarck, 1819) *''Pseudochama inezae ''Pseudochama'' is a species of bivalve mollusc in the family Chamidae. Fossil records The genus is known from the Eocene to the Recent The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Prese ...'' Bayer, 1943 – alabaster jewelbox *'' Pseudochama radians'' (Lamarck, 1819) – At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudochama Gryphina
''Pseudochama gryphina'' is a species of bivalve mollusc in the family Chamidae. This species can be found in the Mediterranean Sea and on coasts of Angola and surroundings. Fossil records The genus ''Pseudochama'' is known from the Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ... to the Recent periods (age range: from 40.4 to 0.0 million years ago). References Chamidae Bivalves described in 1819 Taxa named by Jean-Baptiste Lamarck Molluscs of the Mediterranean Sea {{bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nils Hjalmar Odhner
Nils Hjalmar Odhner (6 December 1884 – 12 June 1973) was a Swedish zoologist who studied mollusks, a malacologist. He was professor of invertebrate zoology at the Swedish Museum of Natural History, Stockholm, and a member of the Royal Swedish Academy of Sciences. He was the father of ambassador Bengt Odhner (1918–1990). Taxa Species named in honor of this malacologist include: * The white-knight nudibranch ''Doris odhneri'' (MacFarland, 1966) *''Tritonia nilsodhneri ''Duvaucelia odhneri'', is a species of dendronotid nudibranch. It is a marine gastropod mollusc in the family Tritoniidae. The specific name ''odhneri'' is in honour of Swedish malacologist Nils Hjalmar Odhner. This species was originally des ...'' Marcus, 1983 * ''Bulimulus'' sp. nov. ''nilsodhneri'' The World Register of Marine Species (WoRMS) lists 490 marine species named by Odhner. Many of these have become synonyms. References 1884 births 1973 deaths Swedish malacologists 20th-century Swedi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...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] |
Mollusc
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 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastr ... [...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] |
Chamidae
Chamidae, common name the jewel boxes or jewel box clams, is a taxonomic family of saltwater clams, a group of marine bivalve mollusks in the order Venerida.Abbott, R.T. & Morris, P.A. ''A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies.'' New York: Houghton Mifflin, 1995. 53. Genera and species Genera and species in the family Chamidae: *'' Arcinella'' Schumacher, 1817 **'' Arcinella arcinella'' (Linnaeus, 1767) – spiny jewelbox **'' Arcinella cornuta'' Conrad, 1866 – Florida spiny jewelbox *'' Chama'' Linnaeus, 1758 Events January–March * January 1 – Swedish biologist Carl Linnaeus (Carl von Linné) publishes in Stockholm the first volume (''Animalia'') of the 10th edition of ''Systema Naturae'', the starting point of modern zoologi ... **'' Chama arcana'' Bernard, 1976 – secret jewelbox **'' Chama congregata'' Conrad, 1833 – corrugate jewelbox **'' Chama echinata'' Broderip, 1835 **'' Chama florida'' Lamarck, 1819 – p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene has been identified with the current warm period, known as MIS 1. It is considered by some to be an interglacial period within the Pleistocene Epoch, called the Flandrian interglacial.Oxford University Press – Why Geography Matters: More Than Ever (book) – "Holocene Humanity" section https://books.google.com/books?id=7P0_sWIcBNsC The Holocene corresponds with the rapid proliferation, growth and impacts of the human species worldwide, including all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudochama Cristella
''Pseudochama cristella'', or the left-handed jewel box clam, is a species of bivalve mollusc in the family Chamidae. It can be found along the Atlantic coast of North America, ranging from southern Florida 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 .... References Chamidae Bivalves described in 1819 {{bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudochama Exogyra
''Pseudochama'' is a species of bivalve mollusc in the family Chamidae. Fossil records The genus is known from the Eocene to the Recent periods (age range: from 40.4 to 0.0 million years ago). Fossils shells have been found all over the world. Species Species within this genus include:Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 53. *'' Pseudochama cristella'' (Lamarck, 1819) *'' Pseudochama exogyra'' (Conrad, 1837) – Pacific jewelbox *''Pseudochama granti'' Strong, 1934 – deep jewelbox *'' Pseudochama gryphina'' (Lamarck, 1819) *''Pseudochama inezae ''Pseudochama'' is a species of bivalve mollusc in the family Chamidae. Fossil records The genus is known from the Eocene to the Recent The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Prese ...'' Bayer, 1943 – alabaster jewelbox *'' Pseudochama radians'' (Lamarck, 1819) – Atl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudochama Granti
''Pseudochama'' is a species of bivalve mollusc in the family Chamidae. Fossil records The genus is known from the Eocene to the Recent periods (age range: from 40.4 to 0.0 million years ago). Fossils shells have been found all over the world. Species Species within this genus include:Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 53. *'' Pseudochama cristella'' (Lamarck, 1819) *'' Pseudochama exogyra'' (Conrad, 1837) – Pacific jewelbox *'' Pseudochama granti'' Strong, 1934 – deep jewelbox *'' Pseudochama gryphina'' (Lamarck, 1819) *''Pseudochama inezae ''Pseudochama'' is a species of bivalve mollusc in the family Chamidae. Fossil records The genus is known from the Eocene to the Recent The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Prese ...'' Bayer, 1943 – alabaster jewelbox *'' Pseudochama radians'' (Lamarck, 1819) – At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
