thiolapillus thiolapillus thiolapillus is a genus of bacteria from the class gammaproteobacteria with one known species (thiolapillus brandeum). thiolapillus scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: incertae sedis family: incertae sedis genus: thiolapillusnunoura et al. 2015 type species thiolapillus brandeum species t. brandeum