[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class "Bacilli" Garrity et al. 2001 nom. ined. see Class Bacilli Ludwig et al. 2010
         Order "Lactobacillales" Garrity and Holt 2001 nom. nud. see Order Lactobacillales Ludwig et al. 2010
           Family Streptococcaceae Deibel and Seeley 1974 (Approved Lists 1980)
             Genus Streptococcus Rosenbach 1884 (Approved Lists 1980)
               01 Streptococcus pyogenes Rosenbach 1884 (Approved Lists 1980)
               02 Streptococcus acidominimus Ayers and Mudge 1922 (Approved Lists 1980)
               03 Streptococcus agalactiae Lehmann and Neumann 1896 (Approved Lists 1980)
               04 Streptococcus alactolyticus Farrow et al. 1985
               05 Streptococcus anginosus (Andrewes and Horder 1906) Smith and Sherman 1938 (Approved Lists 1980)
               06 Streptococcus australis Willcox et al. 2001
               07 Streptococcus bovis Orla-Jensen 1919 (Approved Lists 1980)
               08 Streptococcus canis Devriese et al. 1986
               09 Streptococcus castoreus Lawson et al. 2005
               10 [Streptococcus constellatus] (Prévot 1924) Holdeman and Moore 1974 (Approved Lists 1980)
               11 Streptococcus criceti corrig. Coykendall 1977 (Approved Lists 1980)
               12 Streptococcus cristatus corrig. Handley et al. 1991
               13 Streptococcus devriesei Collins et al. 2004
               14 Streptococcus didelphis Rurangirwa et al. 2000
               15 Streptococcus downei Whiley et al. 1988
               16 [Streptococcus dysgalactiae] (ex Diernhofer 1932) Garvie et al. 1983
               17 Streptococcus entericus Vela et al. 2002
               18 [Streptococcus equi] Sand and Jensen 1888 (Approved Lists 1980)
               19 Streptococcus equinus Andrewes and Horder 1906 (Approved Lists 1980)
               20 Streptococcus ferus (ex Coykendall 1977) Coykendall 1983
               21 Streptococcus gallinaceus Collins et al. 2002
               22 [Streptococcus gallolyticus] Osawa et al. 1996
               23 Streptococcus gordonii Kilian et al. 1989
               24 Streptococcus halichoeri Lawson et al. 2004
               25 Streptococcus hyointestinalis Devriese et al. 1988
               26 Streptococcus hyovaginalis Devriese et al. 1997
               27 Streptococcus infantarius Schlegel et al. 2000
               28 Streptococcus infantis Kawamura et al. 1998
               29 Streptococcus iniae Pier and Madin 1976 (Approved Lists 1980)
               30 Streptococcus intermedius Prévot 1925 (Approved Lists 1980)
               31 Streptococcus lutetiensis Poyart et al. 2002
               32 Streptococcus macacae Beighton et al. 1984
               33 Streptococcus marimammalium Lawson et al. 2005
               34 Streptococcus massiliensis Glazunova et al. 2006
               35 Streptococcus minor Vancanneyt et al. 2004
               36 Streptococcus mitis Andrewes and Horder 1906 (Approved Lists 1980)
               37 Streptococcus mutans Clarke 1924 (Approved Lists 1980)
               38 Streptococcus oligofermentans Tong et al. 2003
               39 Streptococcus oralis Bridge and Sneath 1982
               40 Streptococcus orisratti Zhu et al. 2000
               41 Streptococcus ovis Collins et al. 2001
               42 Streptococcus parasanguinis corrig. Whiley et al. 1990
               43 Streptococcus parauberis Williams and Collins 1990
               44 Streptococcus peroris Kawamura et al. 1998
               45 Streptococcus phocae Skaar et al. 1994
               46 Streptococcus pleomorphus Barnes et al. 1979 (Approved Lists 1980)
               47 Streptococcus pluranimalium Devriese et al. 1999
               48 Streptococcus pneumoniae (Klein 1884) Chester 1901 (Approved Lists 1980)
               49 Streptococcus porcinus Collins et al. 1985
               50 Streptococcus pseudopneumoniae Arbique et al. 2005
               51 Streptococcus ratti corrig. Coykendall 1977 (Approved Lists 1980)
               52 [Streptococcus salivarius] Andrewes and Horder 1906 (Approved Lists 1980)
               53 Streptococcus sanguinis corrig. White and Niven 1946 (Approved Lists 1980)
               54 Streptococcus sinensis Woo et al. 2002
               55 Streptococcus sobrinus (ex Coykendall 1974) Coykendall 1983
               56 Streptococcus suis (ex Elliot 1966) Kilpper-Bälz and Schleifer 1987
               57 Streptococcus thoraltensis Devriese et al. 1997
               58 Streptococcus uberis Diernhofer 1932 (Approved Lists 1980)
               59 Streptococcus urinalis Collins et al. 2000
               60 Streptococcus vestibularis Whiley and Hardie 1988