Amphithrix Kütz. Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Bacteria phylum Cyanobacteria class Cyanobacteriia order Cyanobacteriales family Ammatoideaceae genus Amphithrix Name Homonyms Amphithrix Ragonot, 1893 Amphithrix Bornet & Flahault, 1886 Amphithrix Español, 1952 Amphithrix Kütz.