ncbi.nlm.nih.gov / A Higher Level Classification of All Living Organisms. Michael A. Ruggiero, Dennis P. Gordon, Thomas M. Orrell, Nicolas Bailly, Thierry Bourgoin, Richard C. Brusca, Thomas Cavalier-Smith, Michael D. Guiry, and Paul M. Kirk; Erik V. Thuesen, Academic Editor | Published online 2015 Apr 29
