? microps Rasetti, 1944 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Arthropoda class Trilobita order Ptychopariida family Catillicephalidae Name Homonyms ? microps Gertsch, 1974 ? microps Merriam, 1904 ? microps Rasetti, 1944 ? microps Broom & Robinson, 1948 ? microps M.R.Smith, 1937 ? microps Sjöstedt, 1910