Phyllopoda /(fĭl*lŏp"ō̇*dȧ)/

Phyl·lop·o·da

Phyllopoda

prop. n. pl.
  1. An order of Entomostraca including a large number of species, most of which live in fresh water. They have flattened or leaflike legs, often very numerous, which they use in swimming. Called also Branchiopoda. (Zool.)