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entomostracan (Entomostraca; one of the subclasses of Crustacea, including a large number of species, many of them minute; the group embraces several orders; as the Phyllopoda, Ostracoda, Copepoda, and Pectostraca. See Copepoda, Phyllopoda, and Cladocera) | |||
entomostracan (Entomostraca) |