@inbook{Porifera:SourceID:9100, author = {Reiswig, H.M.}, note = {The PDF supplied here is a proof - NOT the definitive printed text - of a chapter of the Systema Porifera}, title = {Order Amphidiscosida Schrammen, 1924. p. 1231. In: Hooper, J.N.A. & van Soest, R.W.M. (ed.) Systema Porifera. A guide to the classification of sponges (2 volumes). Kluwer Academic/ Plenum, NY 1708 + xvliii. ISBN 0-306-47260-0}, url = {https://www.marinespecies.org/porifera/porifera.php?p=sourcedetails&id=9100}, year = {2002} }