Clostridia Clades: Firmicutes; Bacteria. Introduction Clostridia is a Class in Firmicutes. rom Related postsMitrella kentiiAugust 23, 2020Sesamothamnus lugardiiMarch 9, 2020Dicraspidia donnell-smithiiMarch 10, 2019 Previous postBetaproteobacteriaNext postHymenochaetales