pseudonocardia dioxanivorans pseudonocardia dioxanivorans pseudonocardia dioxanivorans is a gram-positive bacterium from the genus of pseudonocardia which has been isolated from industrial sludge which was contaminated with 1,4-dioxane in the united states. pseudonocardia dioxanivorans scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: pseudonocardiales family: pseudonocardiaceae genus: pseudonocardia species: p. dioxanivorans binomial name pseudonocardia dioxanivoransmahendra and alvarez-cohen 2005 type strain am, atcc 55486, cb1190, dsm 44775, jcm 13855