Ptychoparia laeviceps (Walcott, 1884) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Arthropoda class Trilobita order Ptychopariida family Asaphiscidae genus Asaphiscus species Ptychoparia laeviceps Name Synonyms Asaphiscus laeviceps (Walcott, 1884) Eteraspis laeviceps (Walcott, 1884) Homonyms Ptychoparia laeviceps (Walcott, 1884)