-
-
Eumetazoa (metazoans)
-
Bilateria (bilaterally symmetrical animals)
-
Protostomia (protostomes)
-
Platyhelminthes (flatworms)
-
Class Trematoda
-
Order Polyopisthocotylea
-
Family Polystomatidae
-
Genus Polystoma
-
Species Polystoma integerrimum
-
Species Polystoma nearcticum
-
-
-
-
-
-
-
-
-