from The Century Dictionary and Cyclopedia

  • In Cuvier's system of classification, the fourth family of his testaceous acephals, approximately corresponding to the modern family Cardiidæ.
  • A superfamily of bivalve mollusks, formed for the families Cardiidæ, Adacnidæ, Veniliidæ, and Glossidæ.
  • A suborder of Eulamellibranchiata, having the gills much folded, foot cylindric and more or less elongate, and siphons generally lacking. It contains the families Cardiidæ, Tridacnidæ, Chamidæ, and others.


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