"Spirillum pusillum" Terasaki 1973 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Alphaproteobacteria order Rhodospirillales family Terasakiellaceae genus Terasakiella species Terasakiella pusilla Name Homonyms "Spirillum pusillum" Terasaki 1973 Spirillum pusillum