Aquaspirillum polymorphum Dataset NCBI Taxonomy Rank SPECIES Classification phylum Pseudomonadota class Betaproteobacteria order Neisseriales family Aquaspirillaceae genus Aquaspirillum species Aquaspirillum polymorphum Name Synonyms "Spirillum polymorphum" Williams and Rittenberg 1957 Aquaspirillum polymorphum (Williams and Rittenberg 1957) Hylemon et al. 1973 Spirillum polymorphum Homonyms Aquaspirillum polymorphum Aquaspirillum polymorphum (Williams and Rittenberg 1957) Hylemon et al. 1973