Copepoda

WORDNET DICTIONARY

copepoda(n = noun.animal) subclass copepoda - minute planktonic or parasitic crustaceans;

is a member of class crustacea, crustacea

is a kind of class

Copepoda, n. pl. [NL., from Gr. an oar + -poda.].

An order of Entomostraca, including many minute Crustacea, both fresh-water and marine. [1913 Webster]

" They have a distinct carapace. The eggs are carried in a pair of external pouches. Some are parasites of fishes." [1913 Webster]