Lamniconus
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''Lamniconus'' is a
subgenus In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t ...
of
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 ...
s,
marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...
gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusks in the family
Conidae Conidae, with the current common name of "cone snails", is a taxonomic family (previously subfamily) of predatory sea snails, marine gastropod molluscs in the superfamily Conoidea. The 2014 classification of the superfamily Conoidea, groups onl ...
, the
cone snails A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines co ...
and their allies. In the latest classification of the family Conidae by Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015), ''Lamniconus'' has become a subgenus of ''Conus'' as ''Conus (Lamniconus)'' da Motta, 1991 (type species: ''Conus cleerii'' Reeve, 1844) represented as ''
Conus ''Conus'' is a genus of predatory sea snails, or cone snails, marine gastropod mollusks in the family Conidae.Bouchet, P.; Gofas, S. (2015). Conus Linnaeus, 1758. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at ...
'' Linnaeus, 1758 Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015). ''One, four or 100 genera? A new classification of the cone snails''. Journal of Molluscan Studies. 81: 1-23
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Distinguishing characteristics

The Tucker & Tenorio 2009 taxonomy distinguishes ''Lamniconus'' from ''Conus'' in the following ways:Tucker J.K. & Tenorio M.J. (2009), Systematic Classification of Recent and Fossil Conoidean Gastropods, ConchBooks, Hankenheim, Germany, 295 pp. * Genus ''Conus'' ''
sensu stricto ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular co ...
'' Linnaeus, 1758 :: Shell characters (living and fossil species) :::The basic shell shape is conical to elongated conical, has a deep anal notch on the shoulder, a smooth
periostracum The periostracum ( ) is a thin, organic coating (or "skin") that is the outermost layer of the shell of many shelled animals, including molluscs and brachiopods. Among molluscs, it is primarily seen in snails and clams, i.e. in gastropods and ...
and a small operculum. The shoulder of the shell is usually nodulose and the
protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ...
is usually multispiral. Markings often include the presence of tents except for black or white color variants, with the absence of spiral lines of minute tents and textile bars. ::Radular tooth (not known for fossil species) :::The
radula The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food ...
has an elongated anterior section with serrations and a large exposed terminating cusp, a non-obvious waist, blade is either small or absent and has a short barb, and lacks a basal spur. ::Geographical distribution :::These species are found in the
Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...
region. ::Feeding habits :::These species eat other
gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
s including cones. * Subgenus ''Lamniconus'' da Motta, 1991 ::Shell characters (living and fossil species) :::The shell is turbinate to elongate conical in shape. The
protoconch A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. In older texts it is also called ...
is paucispiral. The spire is scalariform and concave in cross section. The shell is ornamented with cords and nodules which die out early in the postnuclear whorls. The anal notch is deep. The
periostracum The periostracum ( ) is a thin, organic coating (or "skin") that is the outermost layer of the shell of many shelled animals, including molluscs and brachiopods. Among molluscs, it is primarily seen in snails and clams, i.e. in gastropods and ...
is tufted, and the operculum is small. ::Radular tooth (not known for fossil species) :::The anterior section of the radular tooth is roughly equal in length with the posterior section, the blade is long and covers most of the anterior section. A basal spur is present, and the barb is short. The radular tooth has serrations, and an internal terminating cusp. ::Geographical distribution :::The species in this genus occur in the occur in the West Atlantic region. ::Feeding habits :::These cone snails are presumed to be vermivorous, meaning that the cones prey on polychaete worms, based upon the radular tooth morphology.


Species list

This list of species is based on the information in the World Register of Marine Species ( WoRMS) list. Species within the genus ''Lamniconus'' include: * ''Lamniconus carcellesi'' (Martins, 1945): synonym of ''Conus (Lamniconus) carcellesi'' Martins, 1945 represented as '' Conus carcellesi'' Martins, 1945 * ''Lamniconus clerii'' (Reeve, 1844) : synonym of '' Conus clerii'' Reeve, 1844 * ''Lamniconus lemniscatus'' (Reeve, 1849) : synonym of '' Conus lemniscatus'' Reeve, 1849 * ''Lamniconus patriceae'' Petuch & R. F. Myers, 2014: synonym of '' Conus patriceae'' (Petuch & R. F. Myers, 2014) * ''Lamniconus tostesi'' (Petuch, 1986): synonym of ''Conus (Lamniconus) tostesi'' Petuch, 1986 represented as '' Conus tostesi'' Petuch, 1986 * ''Lamniconus xanthocinctus'' (Petuch, 1986) : synonym of '' Conus xanthocinctus'' Petuch, 1986


References


Further reading

* Kohn A. A. (1992). "Chronological Taxonomy of ''Conus'', 1758-1840". Smithsonian Institution Press, Washington and London. * Monteiro A. (ed.) (2007)
The Cone Collector 1
1-28. * Berschauer D. (2010). ''Technology and the Fall of the Mono-Generic Family'
The Cone Collector 15
pp. 51-54 * Puillandre N., Meyer C.P., Bouchet P., and Olivera B.M. (2011), ''Genetic divergence and geographical variation in the deep-water Conus orbignyi complex (Mollusca: Conoidea)'', Zoologica Scripta 40(4) 350-363.


External links


To World Register of Marine Species

Gastropods.com: ''Conidae'' setting forth the genera recognized therein.
{{Taxonbar, from=Q6482121 Conidae Gastropod subgenera