desulfurellaceae desulfurellaceae the desulfurellaceae are a small family of campylobacterota, given their own order. desulfurellaceae scientific classification domain: bacteria phylum: campylobacterota class: desulfurelliawaite et al. 2017 order: desulfurellaleskuever et al. 2006 family: desulfurellaceaekuever et al. 2006 genera desulfurella hippea