Merrillosphaera tertia (Art.Meyer) W.R.Shaw, 1922 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Chlorophyta class Chlorophyceae order Volvocales family Volvocaceae genus Volvox species Volvox tertius Name Homonyms Merrillosphaera tertia (Art.Meyer) W.R.Shaw, 1922