Phylum Cyanobacteria Garcia-Pichel et al. (2020) see Phylum Cyanobacteriota Oren et al. 2022 Class Cyanophyceae Hauck (1885) see Class Chroococcophyceae Hollerbach et al. 1953 Order Oculatellales Strunecký & Mareš (2023) [monotypic] see Order Oculatellales Strunecký and Mareš 2023 Family Oculatellaceae Mai & J.R.Johans. (2018) see Family Oculatellaceae Mai and Johansen 2018 Genus Shackletoniella Strunecký, Raabová & Bernardova (2020) see Genus Shackletoniella Strunecký et al. 2020