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〕}} | image_caption = Various examples of Caenogastropoda | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Caenogastropoda | unranked_superfamilia_authority = Cox, 1960〔Cox L. R. (1960). In: Moore R. C. (ed.) ''Treatise on invertebrate paleontology. Part I., Mollusca 1, Gastropoda''. The Geological Society of America, University of Kansas Press, Lawrence. xxiii + 351 pp., page 311.〕 }} Caenogastropoda (from Ancient Greek ''caeno-'' meaning "recent") is a taxonomic clade, a large diverse group which are mostly sea snails and other marine gastropod mollusks, but also includes some freshwater snails and some land snails. Caenogastropoda contains many families of shelled marine molluscs including the periwinkles, cowries, wentletraps, moon snails, murexes, cone snails and turrids. About 60% of all living gastropods belong to the Caenogastropoda.〔Hayes K. A., Cowie R. H. & Thiengo S. C. (2009). "A global phylogeny of apple snails: Gondwanan origin, generic relationships, and the influence of outgroup choice (Caenogastropoda: Ampullariidae)". ''Biological Journal of the Linnean Society'' 98(1): 61-76. .〕 The clade Caenogastropoda is, based on optimal phylogenetic analysis, deemed monophyletic.〔( Stephanie W. Aktipis, Gonzalo Giribet (2010), A phylogeny of Vetigastropoda and other “archaeogastropods”: re-organizing old gastropod clades, Invertebrate Biology > Vol 129 Issue 3; p. 220-240 )〕 == Biology == The Caenogastropoda exhibit torsion and thus, are included in what was previously been called the Streptoneura (meaning ''twisted nerves''), also known as Prosobranchia (meaning ''gills forward''). Specifically, they are characterized by having only a single auricle in the heart and a single pair of gill leaflets, and are equivalent to the Monotocardia or Pectinobranchia of older authors. 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「Caenogastropoda」の詳細全文を読む スポンサード リンク
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