natronoflexus natronoflexus natronoflexus is an obligately anaerobic and alkaliphilic genus of bacteria from the family of marinilabiliaceae with one known species (natronoflexus pectinivorans). natronoflexus pectinivorans has been isolated from sediments from a soda lake from altai in russia. natronoflexus scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: marinilabiliaceae genus: natronoflexussorokin et al. 2012 type species natronoflexus pectinivorans species n. pectinivorans