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Retilaskeya Albanoi
''Retilaskeya'' is a genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ... of minute sea snails, marine (ocean), marine gastropod molluscs in the family (biology), family Newtoniellidae.MolluscaBase eds. (2021). MolluscaBase. Retilaskeya B. A. Marshall, 1978. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=415925 on 2021-07-04 It was described by Marshall, in 1978. Species Species in the genus ''Retilaskeya'' include: * ''Retilaskeya albanoi'' Cecalupo & Perugia, 2021 * ''Retilaskeya bicolor'' (C. B. Adams, 1845) * ''Retilaskeya chenui'' (Jay & Drivas, 2002) * ''Retilaskeya elegantula'' (Powell, 1930) * ''Retilaskeya emersonii'' (C.B. Adams, 1839) * ''Retilaskeya horrida'' (Monterosato, 1874) * ''Retilaskeya leopardus ...
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Genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should ...
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Retilaskeya Emersonii
''Retilaskeya emersonii'' is a species of sea snail, a gastropod in the family Newtoniellidae, which is known from the northwestern Atlantic Ocean. It was described by C.B. Adams in 1839.''Retilaskeya emersonii''
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Description

The maximum recorded
shell Shell may refer to: Architecture and design * Shell (structure), a thin structure ** Concrete shell, a thin shell of concrete, usually with no interior columns or exterior buttresses ** Thi ...
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Retilaskeya Zelandica
''Retilaskeya'' is a genus of minute sea snails, marine gastropod molluscs in the family Newtoniellidae.MolluscaBase eds. (2021). MolluscaBase. Retilaskeya B. A. Marshall, 1978. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=415925 on 2021-07-04 It was described by Marshall, in 1978. Species Species in the genus ''Retilaskeya'' include: * ''Retilaskeya albanoi'' Cecalupo & Perugia, 2021 * ''Retilaskeya bicolor'' (C. B. Adams, 1845) * ''Retilaskeya chenui'' (Jay & Drivas, 2002) * '' Retilaskeya elegantula'' (Powell, 1930) * ''Retilaskeya emersonii'' (C.B. Adams, 1839) * '' Retilaskeya horrida'' (Monterosato, 1874) * '' Retilaskeya leopardus'' (Rolán & Gori, 2013) * '' Retilaskeya papuaensis'' Cecalupo & Perugia, 2018 * '' Retilaskeya philippinensis'' Cecalupo & Perugia, 2012 * '' Retilaskeya reunionensis'' (Jay & Drivas, 2002) * '' Retilaskeya rufocincta'' Cecalupo & Perugia, 2013 * '' Retilaskeya valentini'' Cecal ...
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Sea Snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell. Definition Determining whether some gastropods should be called sea snails is not always easy. Some species that live in brackish water (such as certain neritids) can be listed as either freshwater snails or marine snails, and some species that live at or just above the high tide level (for example species in the genus '' Truncatella'') are sometimes considered to be sea snails and sometimes listed as land snails A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known .... Anatomy Sea snails are a very large group o ...
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