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'' Megatrigoniidae '' is an extinct family of fossil saltwater clams, marine bivalve mollusks in the subclass Paleoheterodonta. This family of bivalves is known in the fossil record from the Jurassic period, Tithonian age, to the Cretaceous period, Maastrichtian age. Species in this family were facultatively mobile infaunal suspension feeders. ==Subfamilies and genera== Subfamilies and genera within the family Megatrigoniidae: *''Megatrigoniinae'' van Hoepen 1929 * *''Apiotrigonia'' Cox 1952 * ''Pterotrigoniinae'' van Hoepen 1929 * * ''Paulckella'' Cooper et al. 1989 * * ''Pterotrigonia'' van Hoepen 1929 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「Megatrigoniidae」の詳細全文を読む スポンサード リンク
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