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

Borojevic, R. and N. Boury-Esnault, 1987. Calcareous sponges collected by N.O. Thalassia in the continental margin of the Bay of Biscaye: I. Calcinea: 3-27. In: J. Vacelet and N. Boury-Esnault, eds. Taxonomy of Porifera. Springer Verlag, Berlin, Heidelberg. NATO-ASI Series, G13: 1-332.

Bowerbank, J.S., 1866. A monograph of the British Spongiadae, II. Ray Society, London: i-xx, 1-388.

Bowerbank, J.S., 1874. A monograph of the British Spongiadae, III. Ray Society, London: i-xvii, 1-367, pls. I-XCII.

Burton, M., 1957. Plymouth Marine Fauna. 3rd ed. Porifera. Mar. Biol. Ass. U.K.: 26-36.

Burton, M., 1963. A revision of the classification of the calcareous sponges. British Museum (Natural History), London. 693 pp.

Dendy, A. and H. Row, 1913. The classification and phylogeny of the calcareous sponges, with a reference list of all the described species, systematically arranged. Proc. Zool. Soc. London, 53: 704-813.

Gray, J.E., 1867. Notes on the arrangement of sponges, with the description of some new genera. Proc. zool. Soc. London, 1867: 492-558, 2 pls.

Haeckel, E., 1870 (1872). Die Kalkschwämme, eine Monographie. 3 vols. Reimer, Berlin.

Hanitsch, R., 1890. Third report on the Porifera of the L.M.B.C. District. Trans. biol. Soc. Liverpool, 4: 192-238, pls. X-XV.

Klautau, M. & C. Valentine, 2003. Revision of the genus Clathrina (Porifera, Calcarea). Zoological Journal of the Linnean Society 139: 1–62.

Lendenfeld, R. von, 1891. Die Spongien der Adria. I. Die Kalkschwämme. Z. wiss. Zool., 53 (2): 185-321, (3): 361-463.

Lévi, C., 1950b. Inventaire de la faune de Roscoff. Spongiaires. Trav. Stat. biol. Roscoff, n.s. 1 (suppl. 2): 1-28.

Lilly, S.J., F. Sloane, R. Basindale, F.J. Ebling and J.A. Kitching, 1953. The ecology of the Lough Ine rapids with special reference to water currents. IV. The sedentary fauna of sublittoral boulders. J. anim. Ecol., 22: 87-122.

Minchin, E.A., 1896. Suggestions for a natural classification of the Asconidae. Ann. Mag. nat. Hist., (6) 18: 349-362.

Minchin, E.A., 1905a. The characters and synonymy of the British species of sponges of the genus Leucosolenia. Proc. zool. Soc. London, 2: 349-396.

Minchin, E.A.,1905b. On the sponge Leucosolenia contorta Bowerbank, Ascandra contorta Haeckel and Ascetta spinosa Lendenfeld. Proc. Zool. Soc. London, 2: 1-20.

Stephens, J., 1912. Marine Porifera of the Clare Island Survey. Proc. roy. Irish Acad., 31 (59): 1-41.

Topsent, E., 1891a. Essai sur la faune de spongiaires de Roscoff. Arch. Zool. expér. gén., (2) 9: 523-554.

Topsent, E., 1894b. Étude sur la faune des spongiaires du Pas-de-Calais, suivie d'une application de la nomenclature actuelle à la monographie de Bowerbank. Rev. Biol. Nord France, 7: 6-29.

Topsent, E., 1936b. Étude sur les Leucosolenia. Bull. Inst. Océanogr. Monaco, 711: 1-47.

Clathrina contorta