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 Oculatellales Strunecký and Mareš 2023 [monotypic] Family Oculatellaceaeᵀ Mai and Johansen 2018 01 Genus Aerofilum Chakraborty and Mukherjee 2021 02 Genus Albertania Zammit 2018 03 Genus Amphirytos Panou and Gkelis 2022 04 Genus Calenema Ramos et al. 2017 05 Genus Cartusia Mai et al. 2018 06 Genus Drouetiella Mai et al. 2018 07 Genus Egbenema Akagha and Johansen 2023 08 Genus Elainella Jahodářová et al. 2018 09 Genus Gansulinema Li and Cai 2024 10 Genus Kaiparowitsia Mai et al. 2018 11 Genus Komarkovaea Mai et al. 2018 12 Genus Komarkovaeasiopsis Li and Cai 2024 13 Genus Maricoleus Geng et al. 2024 14 Genus Metis Konstantinou and Gkelis 2021 15 Genus Oculatellaᵀ Zammit et al. 2012 16 Genus Pegethrix Mai et al. 2018 17 Genus Shackletoniella Strunecký et al. 2020 18 Genus Shahulinema Li and Cai 2024 19 Genus Siamcapillus Tawong et al. 2022 20 Genus Sodaleptolyngbya Cellamare et al. 2018 21 Genus Thermocoleostomius Jiang et al. 2023 22 Genus Thermoleptolyngbya Sciuto and Moro 2016 23 Genus Tildeniella Mai et al. 2018 24 Genus Timaviella Sciuto and Moro 2017 25 Genus Toxifilum Zimba et al. 2017 26 Genus Trichotorquatus Pietrasiak and Johansen 2021 27 Genus Vacuolonema Morais et al. 2025