Holostraca

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Holostraca \Ho*los"tra*ca\, n. pl. [NL., fr. Gr. "o`los whole +
     ? shell of a testacean.] (Zool.)
     A division of phyllopod Crustacea, including those that are
     entirely covered by a bivalve shell.
     [1913 Webster]