clostridium lacusfryxellense clostridium lacusfryxellense clostridium lacusfryxellense is a psychrophilic, gram-positive, spore-forming and anaerobic bacterium from the genus clostridium which has been isolated from a microbial mat from lake fryxell in antarctica. clostridium lacusfryxellense scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. lacusfryxellense binomial name clostridium lacusfryxellensespring et al. 2003 type strain atcc baa-580, c/c-an/b1, dsm 14205, h10