moorella (bacterium) moorella (bacterium) moorella is a genus of bacteria belonging to the phylum bacillota. moorella scientific classification domain: bacteria phylum: bacillota class: clostridia order: moorellales family: moorellaceae genus: moorellacollins et al. 1994 non rao & rao 1964 type species moorella thermoacetica(fontaine et al. 1942) collins et al. 1994 species m. glycerini m. humiferrea m. mulderi m. perchloratireducens m. stamsii m. thermoacetica m. thermoautotrophica these bacteria are thermophilic, anaerobic and endospore-forming and many species of this genus have been isolated from hot springs. some of these species were formerly included within the genus clostridium, but after a taxonomic rearrangement of the class clostridia, a phylogenetically distinct genus was identified, which was named moorella in honor of the american microbiologist w.e.c. moore. phylogeny the current phylogeny of these bacteria has been inferred from a computational analysis of 16s ribosomal rna genes of described species belonging to the moorella group (a larger group of bacteria within the family thermoanaerobacteraceae that also includes other species actually not belonging to genus moorella). the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi) 16s rrna based ltp_01_2022 120 marker proteins based gtdb 07-rs207 m. thermoacetica (fontaine et al. 1942) collins et al. 1994 m. humiferrea nepomnyashchaya et al. 2012 m. stamsii alves et al. 2013 m. glycerini slobodkin et al. 1997 m. mulderi balk et al. 2005 m. thermoacetica m. humiferrea m. glycerini m. mulderi m. stamsii