"Spirochaeta microdentium" (Noguchi 1912) Heim 1922 Dataset NCBI Taxonomy Classification phylum Spirochaetota class Spirochaetia order Spirochaetales family Treponemataceae genus Treponema species Treponema denticola Name Homonyms Spirochaeta microdentium "Spirochaeta microdentium" (Noguchi 1912) Heim 1922