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Theora (bivalve)
''Theora'' is a genus of saltwater and freshwater clams, bivalve molluscs in the family Semelidae. Species Species accepted as of October 2021: *''Theora alfredensis'' *''Theora iridescens'' *''Theora lata'' *''Theora lubrica'' *''Theora mesopotamica'' *''Theora moulinsii'' *''Theora nasuta'' *''Theora opalina'' *''Theora translucens'' ;Synonyms: * ''Theora cadabra'' (Eames & Wilkins, 1957) accepted as ''Theora mesopotamica'' (Annandale, 1918) (junior synonym) * ''Theora fragilis'' (A. Adams, 1856) accepted as ''Theora lata'' (Hinds, 1843) * ''Theora hindsiana'' Preston, 1916 accepted as ''Theora iridescens'' (Hinds, 1843) * ''Theora nitida'' Gould, 1861 accepted as ''Theora lata'' (Hinds, 1843) * ''Theora ovalis'' E. A. Smith, 1904 accepted as ''Aligena ovalis'' (E. A. Smith, 1904) (original combination) References * Vaught, K.C.; Abbott, R.T.; Boss, K.J. (1989). A classification of the living Mollusca. American Malacologists: Melbourne. . XII, 195 pp External links ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theora Mesopotamica
''Theora mesopotamica'' is a species of Seawater, saltwater and brackish water clam, a bivalve mollusk in the family Semelidae. This species is known from the northwestern end of the Persian Gulf, and from subfossil remains in brackish deposits in the lower Tigris–Euphrates river system, Tigris–Euphrates basin of Iraq. Taxonomy In 1918, this species was first described by Nelson Annandale, from specimens collected by W. H. Lane, which were placed in the Indian Museum. Annandale named the species ''Corbula (Erodona) mesopotamica'', believing it to belong in the subgenus ''Erodona'' within the genus ''Corbula''. Annandale believed this bivalve was most similar to ''Corbula pfefferi'' (now ''Potamocorbula abbreviata''), an Indian species. The species epithet ''mesopotamica'' refers to the species having been found in the Mesopotamian region. In 1957, F. E. Eames and G. D. Wilkins, biologists working for British Petroleum, described a new species with the name ''Abra cadabra''. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theora Iridescens
Theora is a free lossy video compression format. It is developed by the Xiph.Org Foundation and distributed without licensing fees alongside their other free and open media projects, including the Vorbis audio format and the Ogg container. The libtheora video codec is the reference implementation of the Theora video compression format being developed by the Xiph.Org Foundation. Theora is derived from the formerly proprietary VP3 codec, released into the public domain by On2 Technologies. It is broadly comparable in design and bitrate efficiency to MPEG-4 Part 2, early versions of Windows Media Video, and RealVideo while lacking some of the features present in some of these other codecs. It is comparable in open standards philosophy to the BBC's Dirac codec. Theora is named after Theora Jones, Edison Carter's Controller on the ''Max Headroom'' television program. Technical details Theora is a variable-bitrate, DCT-based video compression scheme. Like most common video code ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theora Lubrica
''Theora lubrica'' is a bivalve mollusc endemic to the Northwest Pacific, including northern Japan, southern Russia and Hong Kong. It was introduced into harbours around the North Island of New Zealand around 1972, and has since spread to the upper South Island. It has also been introduced to California, Australia, the Mediterranean Sea and the Atlantic Sea The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe and .... ''Theora lubrica'' is a deposit feeder with a thin, nearly transparent shell. ''Theora lubrica'' is mud-tolerant and lives in burrows on subtidal and lower intertidal flats. ''Theora lubrica'' is considered a pollution-indicator species as it is tolerant of pollution and is often found to be abundant in polluted sediments. References Semelidae Molluscs described in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theora Lata
Theora is a free lossy video compression format. It is developed by the Xiph.Org Foundation and distributed without licensing fees alongside their other free and open media projects, including the Vorbis audio format and the Ogg container. The libtheora video codec is the reference implementation of the Theora video compression format being developed by the Xiph.Org Foundation. Theora is derived from the formerly proprietary VP3 codec, released into the public domain by On2 Technologies. It is broadly comparable in design and bitrate efficiency to MPEG-4 Part 2, early versions of Windows Media Video, and RealVideo while lacking some of the features present in some of these other codecs. It is comparable in open standards philosophy to the BBC's Dirac codec. Theora is named after Theora Jones, Edison Carter's Controller on the ''Max Headroom'' television program. Technical details Theora is a variable-bitrate, DCT-based video compression scheme. Like most common video code ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Adams (zoologist)
Henry Adams (1813–1877) was an English natural history, naturalist and conchology, conchologist. With his brother Arthur Adams (zoologist), Arthur Adams, also a noted conchologist, he wrote The genera of recent Mollusca: arranged according to their organization' three volumes, 1858. His father is an architect hired by HM Customs. References English malacologists English taxonomists 1813 births 1877 deaths Conchologists English zoologists 19th-century British zoologists {{UK-zoologist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semelidae
The Semelidae are a family of saltwater clams, marine bivalve molluscs in the order Cardiida. Description Members of this family have rounded or oval, elongated shells, much flattened. The two valves are connected by an internal ligament in contrast to the closely related family Tellinidae where the ligament is external. The two separate siphons are very long, sometimes several times the length of the shell. These siphons have a characteristic cruciform muscle at their base. Selected genera Genera of Semelidae (with some notable species also listed) include: *'' Abra'' Lamarck, 1818 **'' Abra aequalis'' ( Say, 1822) **'' Abra alba'' (Wood W., 1802) **''Abra californica'' Kundsen, 1970 **''Abra lioica'' (Dall, 1881) **'' Abra longicallis'' Sacchi, 1836 **''Abra nitida'' (O. F. Mueller, 1776) **''Abra pacifica'' Dall, 1915 **'' Abra prismatica'' **'' Abra profundorum'' E. A. Smith, 1885 **'' Abra tenuis'' ( Montagu, 1818) **'' Abra tepocana'' Dall, 1915 *'' Argyrodonax'' Dall, ... [...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] |
