"Spirillum giesbergeri" Williams and Rittenberg 1957 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Betaproteobacteria order Burkholderiales family Comamonadaceae genus Giesbergeria species Giesbergeria giesbergeri Name Homonyms "Spirillum giesbergeri" Williams and Rittenberg 1957 Spirillum giesbergeri