Trichostemma hemisphaericum

Literature

• Arndt, W. 1935. Porifera. Tierwelt Nord.-Ostsee, IIIa: 1-140, figs. 1-239.
• Boury-Esnault, N., M. Pansini and M.J. Uriz 1994. Spongiaires bathyaux de la mer d'Alboran et du golfe ibéro-marocain. Mém. Mus. nation. Hist. nat., 160 (Zool.): 1-174.
• Burton, M. 1930a. Norwegian sponges from the Norman collection. Proc. zool. Soc. London, 2: 487-546.
• Burton, M. 1931a. The Folden Fiord. Report on the sponges collected by Mr. Soot-Ryven in the Folden Fiord in the year 1923. Tromsø Mus. Skr., 1 (13): 1-8.
• Hansen, G. Armauer 1885. Spongiadae. Norw. North Atlant. Exped., 1876-78 (Zool.), 13: 1-26, pls. 1-7.
• Sars, M. 1872. On some remarkable forms of animal life from the great deeps off the Norwegian coast. I. Brøgger and Christie, Christiania: 1-74.
• Topsent, E. 1913. Spongiaires provenant des campagnes scientifiques de la "Princesse Alice" dans les Mers du Nord. Rés. Camp. sci. Prince Albert Monaco, 45: 1-67.
• Uriz, M.J. and D. Rosell 1990. Sponges from bathyal depths (1000-1750 m) in the Western Mediterranean Sea. J. Nat. Hist., 24: 373-391.
• Vosmaer, G.C.J. 1885. Sponges of the "Willem Barents" Expedition, 1880 and 1881. Bijdr. Dierk., 12: 1-47.