Synonyms for Branchiopod (same or very similar meaning)
WordNet sense 1 (of or relating to or characteristic of the subclass Branchiopoda):
branchiopodan, branchiopodousWordNet sense 2 (aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding):
branchiopod crustaceanFrom the ODE community, based on WordNetadd/edit