Spiroplasma poulsonii Williamson et al. 1999 Dataset NCBI Taxonomy Classification phylum Mycoplasmatota class Mollicutes order Entomoplasmatales family Spiroplasmataceae genus Spiroplasma species Spiroplasma poulsonii Name Homonyms Spiroplasma poulsonii Spiroplasma poulsonii Williamson et al. 1999