%entomostraca%

‖n. pl. [ NL., fr. Gr. &unr_; cut in pieces + &unr_; burnt clay, the hard shell of Testacea. ] (Zoöl.) 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. [ 1913 Webster ]