planifilum planifilum planifilum is a gram-positive and aerobic bacterial genus from the family of thermoactinomycetaceae. planifilum scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: thermoactinomycetaceae genus: planifilumhatayama et al. 2005 type species planifilum fimeticola species p. composti p. fimeticola p. fulgidum p. yunnanense