"Brachyspira pulli" Stephens and Hampson 2001 Dataset NCBI Taxonomy Classification phylum Spirochaetota class Spirochaetia order Brachyspirales family Brachyspiraceae genus Brachyspira species Brachyspira pulli Name Homonyms Brachyspira pulli "Brachyspira pulli" Stephens and Hampson 2001