? celer Walcott, 1917 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Arthropoda class Trilobita order Corynexochida family Dinesidae Name Homonyms ? celer Hentz, 1847 ? celer Marsh, 1874 ? celer Marsh, 1873 ? celer Walcott, 1917