phycisphaeraceae phycisphaeraceae phycisphaeraceae is a family of bacteria. phycisphaeraceae scientific classification domain: bacteria phylum: planctomycetota class: phycisphaeralesfukunaga et al. 2010 family: phycisphaeraceaefukunaga et al. 2010 genera algisphaera "mucisphaera" kallscheuer et al. 2022 phycisphaera poriferisphaera phylogeny the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi) 120 marker proteins based gtdb 07-rs207 and 16s rrna based ltp_01_2022 phycisphaera fukunaga et al. 2010 algisphaera yoon et al. 2014 poriferisphaera kallscheuer et al. 2021