Gnathostomulida@  (4) Nemertea@  (7) Platyhelminthes@  (27) Rhombozoa@  (1)

See also:

• Science: Biology: Microbiology: Parasitology  (17)

• Platyhelminthes and Nemertea - Details of the classes and subclasses contained in these two phyla, with photographs of certain example species.
• Reefkeeper’s Guide to Invertebrate Zoology: Flat and Ribbon Worms - Article outlining the biology of the Platyhelminthes and Nemertea.

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