More on turbellarian from Fact Monster:

• planarian - planarian planarian, common name for several genera of the free-living (turbellarian) flatworms ...
• Platyhelminthes - Platyhelminthes Platyhelminthes , phylum containing about 20,000 species of soft-bodied, ...
• Platyhelminthes: Class Turbellaria - Class Turbellaria The mostly free-living, primarily carnivorous, flatworms of class Turbellaria are ...
• Platyhelminthes: Class Trematoda - Class Trematoda The parasitic flatworms of class Trematoda, also called flukes, have oral suckers, ...
• Platyhelminthes: Anatomy - Anatomy Flatworms are dorso-ventrally flattened. The epidermis is generally ciliated in the ...

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