Kingdom Animalia Linnaeus, 1758 - animals Phylum Platyhelminthes Gegenbaur, 1859 - flatworms Class Trematoda Rudolphi, 1808 - flukes see Infraclass Trematoda Rudolphi, 1808 Subclass Aspidogastrea Faust & Tang, 1936 Genus Aspidogaster von Baer, 1826