thermosediminibacterales thermosediminibacterales thermosediminibacterales is an order of gram positive bacteria in the class clostridia. thermosediminibacterales scientific classification domain: bacteria phylum: bacillota class: clostridia order: thermosediminibacteraleszhang et al. 2019 families tepidanaerobacteraceae zhang et al. 2019 thermosediminibacteraceae zhang et al. 2019