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''Lithoconus'' is a proposed genus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails and their allies. 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 ''Lithoconus'' 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 ''Lithoconus'' Mörch, 1852 ::Shell characters (living and fossil species) :::The shell is large, thick and obconic in shape, and the shoulders are subangular. The protoconch is multispiral, and the whorl tops are usually concave in cross section and have just one or two cords. The shell is ornamented with nodules which are obsolete but present. The anal notch is shallow to moderately deep, depending upon the species. The color pattern includes spiral rows of brown, red or black markings, and the anterior end is usually colored black, red, blue or lavender. The periostracum is smooth and very thick, and the operculum is large. ::Radular tooth (not known for fossil species) :::The anterior section of the radular tooth may be shorter or significantly longer than the length of posterior section, and 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 several rows of coarse denticles. ::Geographical distribution :::The species in this genus occur in the occur in the Indo-Pacific region. ::Feeding habits :::These cone snails are vermivorous, meaning that the cones prey on a variety of polychaete worms, including enteropneust, eunicid, capitellid, and nereid worms.〔 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「Lithoconus」の詳細全文を読む スポンサード リンク
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