Lentisphaerae is a phylum of bacteria closely related to Chlamydiae and Verrucomicrobia.
It includes two monotypic orders Lentisphaerales and Victivallales. Phylum members can be aerobic or anaerobic and fall under two distinct phenotypes. One consists of terrestrial gut microbiota from mammals and birds. The other phenotype includes marine micro-organisms: sequences from fish and coral microbiomes and marine sediment.
^Cho J, Vergin K, Morris R, Giovannoni S (2004). "Lentisphaera araneosa gen. nov., sp. nov, a transparent exopolymer producing marine bacterium, and the description of a novel bacterial phylum, Lentisphaerae". Environ Microbiol6 (6): 611–21. doi:10.1111/j.1462-2920.2004.00614.x. PMID15142250.