The scientific name for Flatworms is Platyhelminthes. The worms included in this group are all soft bodied and invertebrates. They lack any specialized organs like circulatory system etc. They are eukaryotes that belong to the kingdom Animalia, Sub kingdom Eumetazoa, super phylum Platyzoa and Phylum Platyhelminthes. Genus is a very low taxonomic level and it is a more specific classification. The various types of flatworms belong to different genus’s. For example one genus of flatworms is planarians which are non parasitic flatworms. So flatworms do not belong to any genus; they contain different genus.