plural noun Re·cep·tac·u·lit·i·dae

Definition of Receptaculitidae

  1. :  a family of calcareous fossils sometimes placed in the Hyalospongiae but usually set apart as the class Receptaculida — see receptaculites

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Origin and Etymology of receptaculitidae

New Latin, from Receptaculites, type genus + -idae

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to cast off or become cast off

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