"Spirillum psychrophilum" Terasaki 1973 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Betaproteobacteria order Burkholderiales family Comamonadaceae genus Simplicispira species Simplicispira psychrophila Name Homonyms "Spirillum psychrophilum" Terasaki 1973 Spirillum psychrophilum