Planodiscus Korobov, 1980 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Animalia phylum Arthropoda class Trilobita order Agnostida family Hebediscidae genus Parapagetia Name Homonyms Planodiscus Sellnick, 1926 Planodiscus Reitlinger, 1970 Planodiscus Korobov, 1980