Multiple choice “Archaeal Richmond Mine acidophilic nanoorganisms” (ARMAN) are classified under viruses mycoplasmas bacteria archaea cyanobacteria Reveal answer Fill a bubble to check yourself D Correct answer Explanation Archaeal Richmond Mine acidophilic nanoorganisms (ARMAN) are archaea which were discovered in 2006 and are some of the smallest organisms known. They occasionally connect with other archaeal cells in acid mine drainage biofilms.