Hayward, P. J. & Ryland, J. S., 1985. Cyclostome Bryozoans. pp. 1-147. (Kermack, D.M. & Barnes, R.S.K. Synopses of the British Fauna (n.s.), 34). E.J.Brill for the Linnaean Society, London
Johnston G., 1847. A history of British zoophytes. Van Voorst, Second edition, London. pp. vol. 1, pp. i-xvi, 1-488, vol. 2, plates 1-7 
Escharella immersa (Fleming, 1828)
Hayward, P.J., & Ryland, J.S., 1999. Cheilostomatous Bryozoa. Part 2. Hippothoidea - Celleporoidea. Synopses of the British Fauna (New Series), 14: 1-416, (Barnes, R.S.K., & Crothers, J.H., editors). Field Studies Council, Shrewsbury
Herentia hyndmanni (Johnston, 1847)
Berning, B.; Tilbrook, K.J.; Rosso, A. (2008). Revision of the north‐eastern Atlantic and Mediterranean species of the genera Herentia and Therenia (Bryozoa: Cheilostomata). Journal of Natural History, 42(21-22), 1509-1547.
Crisia fistulosa (Heller, 1867)
Zabala, M., & Maluquer, P., 1988. Illustrated keys for the classification of Mediterranean Bryozoa. Treballs del Museu de Zoologia, Barcelona, 4: 1-294.
Scrupocellaria incurvata Waters, 1897
Zabala, M., & Maluquer, P., 1988. Illustrated keys for the classification of Mediterranean Bryozoa. Treballs del Museu de Zoologia, Barcelona, 4: 1-294.
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