found: International Symposium on the Turbellaria (4th : 1984 : Fredericton, N.B.). Advances in the biology of turbellarians and related Platyhelminthes, 1986.
found: ITIS, Dec. 3, 2001(Class Turbellaria. Common name: planarians. Phylum Platyhelminthes)
found: Random House Web. unabr. dict., c1997(planarian: any of various free-swimming, mostly freshwater flatworms of the class Turbellaria)
found: Am. herit. dict. of the Engl. lang., c2000(planarian: any of various small, chiefly freshwater turbellarian flatworms of the order Tricladida)