Wikimedia
Wikipedia: Platyhelminthes
Wikipedia offers information on the phylum, platyhelminthes, or flatworms. Includes a scientific classification chart and a list of the orders of the phylum.
Regents of the University of Michigan
Animal Diversity Web: Phylum Platyhelminthes
The Animal Diversity Web offers a site on the phylum platyhelminthes, or flatworms. Includes a section on reproduction.
BiologyWise
Biology Wise: Platyhelminthes Examples
Describes the characteristics and anatomy of platyhelminthes and provides a list of examples from the classes Turbelaria, Trematoda, Cestoda and Monogenea.