"Brachyspira canis" Oxberry and Hamspon 2003 Dataset NCBI Taxonomy Classification phylum Spirochaetota class Spirochaetia order Brachyspirales family Brachyspiraceae genus Brachyspira species Brachyspira canis Name Homonyms Brachyspira canis "Brachyspira canis" Oxberry and Hamspon 2003