Phylactolaymata or Phylactolaemata: How To spell?

The word Phylactolaymata is misspelled against Phylactolaemata, a noun meaning "An order of fresh-water Bryozoa in which the tentacles are arranged on a horseshoe-shaped lophophore, and the mouth is covered by an epistome. Called also Lophopoda, and hippocrepians."