"Leptospirillum" Markosyan 1972 Dataset NCBI Taxonomy Classification phylum Nitrospirota class Nitrospiria order Nitrospirales family Nitrospiraceae genus Leptospirillum Name Homonyms Leptospirillum "Leptospirillum" Markosyan 1972 Leptospirillum (ex Markosyan 1972) Hippe 2000