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Pseudochama
''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 periods (age range: from 40.4 to 0.0 million years ago). Fossils shells have been found all over the world. ...'' Bayer, 1943 – alabaster jewelbox *'' Pseudochama radians'' (Lamarck, 1819) – Atla ... [...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 to the Recent 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 ... 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] |
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 **'' Chama arcana'' Bernard, 1976 – secret jewelbox **'' Chama congregata'' Conrad, 1833 – corrugate jewelbox **'' Chama echinata'' Broderip, 1835 **'' Chama florida'' Lamarck, 1819 – pretty jewelbox **'' Chama frondosa'' Broderip, 1835 **'' Chama hicksi'' Valentich-Scott & Coan, 2010 **''Chama lactuca'' Dall, 1886 – milky jewelbox **'' Chama macerophylla'' Gmelin, 1791 – leafy jewelbox **''Chama pellucida Chama may refer to: Cha ... [...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 Great .... References Chamidae Bivalves described in 1819 {{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 e ... [...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'' Marcus, 1983 * ''Bulimulus'' sp. nov. ''nilsodhneri'' The World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific speciali ... (WoRMS) lists 490 marine species named by Odhner. Many of these have become synonyms. References 1884 births 1973 deaths Swedish malacologists 20th-century Swe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), 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 reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), 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 binomial nomenclature, 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 specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bivalve
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater 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, cockles, mussels, scallops, and numerous other 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 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 swim. The shipworms bore into wood, clay, or stone and live inside these substances. The shell of a bivalve is composed ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
