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''Phasmoconus'' is a proposed genus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies.〔Bouchet, P. (2011). ''Phasmoconus'' Mörch, 1852. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=428966 on 5 June 2012〕〔Tucker J.K. & Tenorio M.J. (2009) Systematic classification of Recent and fossil conoidean gastropods. Hackenheim: Conchbooks. 296 pp.〕 This genus currently (November 2011) is still treated by some experts as an "alternative representation" of this group of species. When the "alternative representations" are not used, this group of species is instead still placed in the Linnaean genus ''Conus''. ==Distinguishing characteristics== The Tucker & Tenorio 2009 taxonomy distinguishes ''Phasmoconus'' 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'' 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 and a small operculum. The shoulder of the shell is usually nodulose and the protoconch 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 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 region. ::Feeding habits :::These species eat other gastropods including cones.〔 * Genus ''Phasmoconus'' Mörch, 1852 ::Shell characters (living and fossil species) :::The shell is elongated and subcylindrical in shape with angulate shoulders. The protoconch is usually multispiral, but rarely paucispiral. The anal notch is shallow, and an anterior notch is either slight or absent. The periostracum is smooth, and the operculum is small. ::Radular tooth (not known for fossil species) :::The anterior section of the radular tooth is approximately the same length as the posterior section but in some species one section may be longer than the other. The blade extends less than one-half the length of the anterior section of the radular tooth. A basal spur is absent, and the barb is short. The waist is obvious, and there is an elongated terminating cusp. There is a short row of serrations between the barb and accessory process. ::Geographical distribution :::The species in this genus occur in the Indo-Pacific and Australian regions. ::Feeding habits :::These species are piscivorous, meaning that these cone snails prey on fish.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Phasmoconus」の詳細全文を読む スポンサード リンク
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