Unio aztecorum chapalanus Martens, 1900 Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Animalia phylum Mollusca class Bivalvia order Unionida family Unionidae genus Nephronaias species Nephronaias aztecorum Name Homonyms Unio aztecorum chapalanus Martens, 1900 Unio aztecorum var. chapalanus E.von Martens, 1890