bellilinea bellilinea bellilinea is a thermophilic bacteria genus from the family of anaerolineaceae with one known species (bellilinea caldifistulae). bellilinea caldifistulae has been isolated from thermophilic digester sludge from niigata in japan. bellilinea scientific classification domain: bacteria phylum: chloroflexota class: anaerolineae order: anaerolineales family: anaerolineaceae genus: bellilineayamada et al. 2007 type species bellilinea caldifistulae species b. caldifistulae