Cardium pygmaeum Hisinger, 1837 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Bivalvia order Cardiida family Cardiidae genus Cardium species Cardium pygmaeum Name Synonyms Conocardium pygmaeum Isberg, 1934 Hippocardia pygmaea (Hisinger, 1837) Pleurorhynchus pygmaea (Hisinger, 1837) Pojetaconcha pygmaea (Hisinger, 1837) Homonyms Cardium pygmaeum Donovan, 1800 Cardium pygmaeum R.A.Philippi, 1860 Cardium pygmaeum Hisinger, 1837