class turbellaria isncludes the members which are free living and class trematoda includes parasitic species
Cestodes:
Flat, elongated, and possess segments called proglottids
Trematodes:
Flat and leaf-like body
Cestoda, Turbellaria, Trematoda, and Monogenea
The phylum that contains the classes Trematoda, Cestoda, and Turbellaria is Platyhelminthes. These classes are all part of the same phylum due to their similar characteristics, such as being flatworms with bilateral symmetry and simple body structures.
Turbellaria , Trematoda and cestoda
monogenea are ectoparasitic while trematoda are endoparasitic
The scientific name for flatworms is Platyhelminthes.
Flatworms are of the phylum Platyhelminthes. This phylum has three classes: Turbellaria -- predacious worms Trematoda -- known commonly as flukes Cestoda -- tapeworms
There are three classes in the platyhelminthes phylum. These classes include Turbellaria, Monogenea, and Trematoda. These classes still break down into orders, families, genus, and species. I'm still looking for the rest.
Platyhelminthes as a phylum is divided into 4 classes. The tapeworm class (Cestoda) is endoparasitic. This means they live parasitically inside a host. There is also the ectoparasitic class Monogenea which lives parasitically on the outside of a host. There are marine specimens and those that live in other moist environments. This is the class Turbellaria.
sponges, sea jellies, octopi, squids, any under sea invertebrates including sea stars and sand dollars
Einar Westblad has written: 'Some hydroidea and turbellaria from western Norway with description of three new species of turbellaria' -- subject(s): Turbellaria, Marine animals
Trematoda
Class Turbellaria