Discoaaster perplexus Bramlette & Riedel. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Haptophyta class Prymnesiophyceae order Coccolithales family Calcidiscaceae genus Hayaster species Hayaster perplexus Name Homonyms Discoaaster perplexus Bramlette & Riedel.