"Streptococcus mutans subsp. sobrinus" Coykendall 1974 Dataset NCBI Taxonomy Classification phylum Bacillota class Bacilli order Lactobacillales family Streptococcaceae genus Streptococcus species Streptococcus sobrinus Name Homonyms Streptococcus mutans subsp. sobrinus "Streptococcus mutans subsp. sobrinus" Coykendall 1974