Olenus argentinus (Kayser, 1876) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Trilobita order Ptychopariida family Olenidae genus Parabolina species Parabolina argentina Name Homonyms Olenus argentinus (Barrande, 1868) Olenus argentinus (Kayser, 1876)