Ptygura tridorsicornis Summerfield-Wright, 1957 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Rotifera class Eurotatoria order Flosculariaceae family Flosculariidae genus Ptygura species Ptygura tridorsicornis Name Homonyms Ptygura tridorsicornis Summerfield-Wright, 1957