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Arndt, W., 1935. Porifera. Tierwelt Nord.-Ostsee, IIIa: 1-140, figs. 1-239.

Burton, M., 1930a. Norwegian sponges from the Norman collection. Proc. zool. Soc. London, 2: 487-546.

Koltun, V.M., 1966. [The Tetraxonid sponges of the northern and far-eastern seas of the USSR. Keys to the fauna of the USSR]. Akademia Nauk, Moscow, Leningrad, 111 pp., XXXVIII pls.

Vosmaer, G.C.J., 1885. Sponges of the "Willem Barents" Expedition, 1880 and 1881. Bijdr. Dierk., 12: 1-47.

Stryphnus fortis