Leptograptus antiquus (Hall, 1899) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Hemichordata class Pterobranchia family Anisograptidae genus Adelograptus species Leptograptus antiquus Name Synonyms Adelograptus antiquus (Hall, 1899) Bryograptus antiquus (Hall, 1899) Kiaerograptus antiquus (Hall, 1899) Homonyms Leptograptus antiquus (Hall, 1899)