1. The Turbellaria are one of the traditional sub-divisions of the phylum Platyhelminthes (flatworms), and include all the sub-groups that are not exclusively parasitic.

2. Cocoon, a case produced in the larval stage of certain animals (e.g., butterflies, moths, leeches, earthworms, Turbellaria) for the resting pupal stage (see pupa) in the life cycle

3. Groundwater in Europe is a vibrant ecosystem with approximately 2 000 highly adapted, and in some instances very rare, species such as turbellaria, rotifiers, water mites, fresh water amphipods and olms.