Rhombozoa, or Dicyemida,'s a phylum of tiny parasites that live in the renal appendages of cephalopods. Although the name Dicyemida precedes Rhombozoa in usage, and's preferred by most contemporary authors, Rhombozoa still enjoys much popular support. Classification's controversial. Traditionally, dicyemids have been grouped with the Orthonectida in the Mesozoa; however, molecular phylogenies indicate that dicyemids may be more closely related to the Platyhelminthes (flatworms). Dicyemids are d… (More on Rhombozoa)