? obsoletus Kobayashi, 1935 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Arthropoda class Trilobita order Agnostida family Spinagnostidae Name Homonyms ? obsoletus Say, 1824 ? obsoletus Stinton, 1984 ? obsoletus Kobayashi, 1935 ? obsoletus Lermontova, 1951 ? obsoletus Leonova, 1983 ? obsoletus Meek, 1871 ? obsoletus Wagler, 1829 ? obsoletus Nielsen, 1913 ? obsoletus Stephens