Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 2024 Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024 Phylum Cyanobacteriota Oren et al. 2022 Class Chroococcophyceaeᵀ Hollerbach et al. 1953 Order Chroococcales corrig. Ardissone 1887 Family Chroococcaceaeᵀ Nägeli 1849 01 Genus †Aphanocapsaopsis Maithy and Shukla 1977 02 Genus †Asterocapsoides Yin and Li 1978 03 Genus †Bigeminococcus Schopf and Blacic 1971 04 Genus †Bisacculoides Oehler 1977 05 Genus †Eosynechococcus Hofmann 1976 06 Genus †Melasmatosphaera Hofmann 1976 07 Genus †Myxococcoides Schopf 1968 08 Genus †Nanococcus Oehler 1977 09 Genus †Palaeoanacystis Schopf 1968 10 Genus †Phanerosphaerops Schopf and Blacic 1971 11 Genus †Praechroococcus Vologdin 1962 12 Genus †Sphaerophycus Schopf 1968 13 Genus †Tetraphycus Oehler 1978 14 Genus Alborzia Nowruzi and Soares 2021 15 Genus Chroococcusᵀ Nägeli 1849 16 Genus Chroostipes Pascher 1914 17 Genus Cryptochroococcus Wang et al. 2021 18 Genus Cryptococcum Gama et al. 2019 19 Genus Cyanocloster Kufferath 1929 20 Genus Cyanokybus Schiller 1956 21 Genus Cyanosarcina Kováčik 1988 22 Genus Dactylococcopsis Hansgirg 1888 23 Genus Endospora Gardner 1927 nom. illeg. 24 Genus Inacoccus corrig. Gama et al. 2019 25 Genus Johannesbaptistia De Toni 1934 26 Genus Kirchneriellopsis Kufferath 1954 27 Genus Limnococcus (Komárek and Anagnostidis 1995) Komárková et al. 2010 28 Genus Neochroococcus Geng and Yu 2021 29 Genus Nephrococcus Li 1984 30 Genus Planosphaerula Borzì 1905 31 Genus Pseudocapsa Ercegović 1925 32 Genus Pseudolimnococcus de Oliveira et al. 2024 33 Genus Sphaerodictyon Geitler 1925 34 Genus Tetrachloris Pascher 1925 35 Genus Tetrarcus Skuja 1934