The Streptococcaceae is a family of Gram-positive bacteria, placed within the order of Lactobacillales. Representative genera include Lactococcus, Lactovum, Pilibacter, and Streptococcus. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Classes Bacilli Clostridia Mollicutes The Firmicutes are a group of bacteria, most of which have Gram-positive stains. ... Orders Bacillales Lactobacillales The term bacilli (singular bacillus) is used to refer to any rod-shaped bacteria. ... Families Aerococcaceae Carnobacteriaceae Enterococcaceae Lactobacillaceae Leuconostocaceae Streptococcaceae The Lactobacillales are an order of Gram-positive bacteria, placed within the Firmicutes. ... Species Lactococcus garvieae Lactococcus lactis Lactococcus piscium Lactococcus plantarum Lactococcus raffinolactis Lactococcus is the genus of bacteria formerly known as Streptococcus Group N and related species. ... Species S. agalactiae S. bovis S. pneumoniae S. pyogenes S. salivarius S. suis S. viridans Streptococcus is a genus of spherical, Gram-positive bacteria of the phylum Firmicutes. ... Gram-positive bacteria are those that are stained dark blue or violet by gram staining, in contrast to gram-negative bacteria, which are not affected by the stain. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Families Aerococcaceae Carnobacteriaceae Enterococcaceae Lactobacillaceae Leuconostocaceae Streptococcaceae The Lactobacillales are an order of Gram-positive bacteria, placed within the Firmicutes. ... Species Lactococcus garvieae Lactococcus lactis Lactococcus piscium Lactococcus plantarum Lactococcus raffinolactis Lactococcus is the genus of bacteria formerly known as Streptococcus Group N and related species. ... Species S. agalactiae S. bovis S. pneumoniae S. pyogenes S. salivarius S. suis S. viridans Streptococcus is a genus of spherical, Gram-positive bacteria of the phylum Firmicutes. ...