- Platyhelminthes, phylum Platyhelminthes - flatworms
--1 is a kind of phylum
--1 is a member of Animalia, kingdom Animalia, animal kingdom
--1 has members:bladder worm; flatworm, platyhelminth; Turbellaria, class Turbellaria; Trematoda, class Trematoda; Cestoda, class Cestoda