|
''Bathyconus'' is a subgenus of sea snails, cone snails, marine gastropod mollusks in the genus Conasprella, family Conidae, the cone snails and their allies.〔Bouchet, P. (2015). Bathyconus Tucker & Tenorio, 2009. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=580153 on 2015-03-18〕 In the new classification of the family Conidae by Puillandre N., Duda T.F., Meyer C., Olivera B.M. & Bouchet P. (2015), ''Bathyconus'' has become a subgenus of ''Conasprella'': ''Conasprella (Fusiconus)'' Tucker & Tenorio, 2009 represented as ''Conasprella'' Thiele, 1929 〔 ( 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 ) 〕 ==Distinguishing characteristics== The Tucker & Tenorio 2009 taxonomy distinguishes ''Bathyconus'' 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.〔 * Subgenus ''Bathyconus'' Tucker & Tenorio, 2009 ::Shell characters (living and fossil species) :::The protoconch is multispiral, the shell is elongated conical in shape, the spire is elevated, the shoulders have nodules at the periphery. A central cord bisects the early whorls, followed by two to three cords on the outer whorls, and the body whorl of the shell has numerous cords. The anal notch is deep. The periostracum is smooth, and the operculum is small. ::Radular tooth (not known for fossil species) :::The anterior section of the radula is much shorter than posterior section, and the waist is obvious. The blade and posterior blade covers the anterior section of the radular tooth. A basal spur is present, the barb and blade are short. The anterior end of the shaft fold is blunt. ::Geographical distribution :::These species are found throughout the Indo-Pacific region. ::Feeding habits :::These species are presumed to be vermivorous (meaning that they prey on marine worms) based upon their radular 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「Bathyconus」の詳細全文を読む スポンサード リンク
|