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| image = PlatyceratidMississippian.JPG | image_caption = Conical platyceratid gastropod (''Palaeocapulus acutirostre'') attached to a crinoid (Mississippian of Ohio) | superfamilia = Platyceratoidea | parent_authority = Hall, 1879 | authority = Hall, 1879 | subdivision_ranks = | subdivision = }} Platyceratidae is an extinct family of Paleozoic sea snails, marine gastropod mollusks. This family may belong in the Patellogastropoda or the Neritimorpha.〔 The platyceratid gastropods are known for the complex symbiotic relationships they had with crinoids.〔Baumiller T. K. (2003). "Evaluating the interaction between platyceratid gastropods and crinoids; a cost-benefit approach". ''Palaeogeography, Palaeoclimatology, Palaeoecology'' 201(3-4): 199-209. .〕 This is the only family in the superfamily Platyceratoidea. == Genera == * ''Platyceras'' 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「Platyceratidae」の詳細全文を読む スポンサード リンク
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