Flatworm

Monogenea

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Trematoda

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Cestoda

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Turbellaria

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The flatworms (Platyhelminthes, Greek "platy"': flat; "helminth": worm) are a phylum of relatively simple soft-bodied invertebrate animals. With about 20,000 species they are the largest phylum of Acoelomates. Flatworms are found in marine, freshwater, and even damp terrestrial environments. Most are free-living forms, but many are parasitic on other animals. There are four classes: Trematoda, Cestoda, Monogenea, and Turbellaria.

Related Topics:
Phylum - Animal - Species - Acoelomate - Parasitic - Class - Trematoda - Cestoda - Monogenea - Turbellaria

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