Hydrococcus Thiele, 1928 Dataset World Register of Marine Species Rank GENUS Classification kingdom Animalia phylum Mollusca class Gastropoda order Littorinimorpha family Hydrococcidae genus Hydrococcus Name Homonyms Hydrococcus Kützing, 1833 Hydrococcus Link, 1833 Hydrococcus Thiele, 1928