nebalia

from The Century Dictionary.

• noun A remarkable genus of uncertain position among the lower crustaceans, ranged by Huxley among the phyllopodous Branchiopoda, by others in a peculiar order named Phyllocarida or Leptostraca.
• noun A genus of rotifers.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) A genus of small marine Crustacea, considered the type of a distinct order (Nebaloidea, or Phyllocarida.)