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''Plicaustraconus'' is a proposed genus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies.〔Bouchet, P. (2011). ''Plicaustraconus'' Moolenbeek, 2008. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=578304 on 2012-01-21〕 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 ''Monteiroconus'' 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 ''Plicaustraconus'' Moolenbeek, 2008 ::Shell characters (living and fossil species) :::The shell is obconic in shape with broad shoulders. The protoconch is paucispiral. The whorl tops have cords, and there is a well developed dentiform plait. The anal notch is shallow to relatively deep, and an anterior notch is absent. The periostracum is smooth, and the operculum is large. ::Radular tooth (not known for fossil species) :::The anterior section of the radular tooth is shorter than the posterior section, and the blade covers between one-third and two-thirds of the length of the anterior section. A basal spur is present, and the barb is short. There are one or two rows of serrations. ::Geographical distribution :::The species in this genus occur in the Australian and South African regions. ::Feeding habits :::These cone snails are presumed vermivorous, meaning that the cones prey on polychaete worms, based upon the radular tooth morphology.〔 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「Plicaustraconus」の詳細全文を読む スポンサード リンク
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