turbellarian

Urastoma cyprinae is a turbellarian that infects the gills of numerous species.

Graffilla is a parasitic turbellarian of the phylum Platyhelminthes.

Xenoturbella, a bilaterian whose only well-defined organ is a statocyst, was originally classified as a "primitive turbellarian".

According to the Turbellarian Taxonomic Database :

Caenoplana coerulea, known as the Blue Planarian or Blue Garden Flatworm is a species of land flatworm, a terrestrial turbellarian.

It has been variously interpreted as a jellyfish, coral, polychaete worm, turbellarian, mushroom, xenophyophoran protist, sea anemone, lichen, and even a close ancestor of the chordates.

Turbellarian species can be found in the United States, Europe and Japan.

The Seriata are an order of turbellarian flatworms.

Among them turbellarian worms, snails and amphipod crustaceans are particularly diverse.

Some species of nudibranchs ("sea slugs") and turbellarian flatworms prey on entoprocts.

D. sicula at the "Turbellarian taxonomic database"

The family is divided into five genera (see taxobox) and contains about 20 species (Turbellarian taxonomic database, 2006).

The Polycladida represents a highly diverse clade of free-living marine turbellarian flatworms.

However, turbellarian statocysts have no sensory cilia, and it is unknown how they sense the movements and positions of the solid particles.

Currently the family contains 13 genera, the type genus being Convoluta (Turbellarian taxonomic database,2006).

According Turbellarian Taxonomic Database:

Turbellarian Taxonomic Database: A listing of the taxonomy of turbellarians (http://turbellaria.umaine.edu)

A flame cell is a specialized excretory cell found in the simplest freshwater invertebrates, including flatworms (except the turbellarian order Acoela), rotifers and nemerteans; these are the simplest animals to have a dedicated excretory system.

Endoparasites (parasites living inside the gills) include encysted adult didymozoid trematodes, a few trichosomoidid nematodes of the genus Huffmanela, including Huffmanela ossicola which lives within the gill bone, and the encysted parasitic turbellarian Paravortex.