"Cycloclasticus spirillensus" Chung and King 2001 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Gammaproteobacteria order Thiotrichales family Piscirickettsiaceae genus Cycloclasticus species Cycloclasticus spirillensus Name Homonyms Cycloclasticus spirillensus 'Cycloclasticus spirillensus' "Cycloclasticus spirillensus" Chung and King 2001