Cenarchaeum symbiosum Preston et al. 1996 Preston C.M. Wu K.Y. Molinski T.F. DeLong E.F. A psychrophilic crenarchaeon inhabits a marine sponge: Cenarchaeum symbiosum gen. nov., sp. nov. 1996 93 13 6241 6246 Proceedings of the National Academy of Sciences of the United States of America Proc Natl Acad Sci U S A 0027-8424 1091-6490 10.1073/pnas.93.13.6241 8692799 This strain is a symbiont of an unnamed marine sponge within the genus Axinella. No deposit is known to exist in culture collections.