@inbook{NARMS:SourceID:8985, author = {Rützler, K.}, journal = {In: Hooper, J.N.A.; Van Soest, R.W.M. (eds) Systema Porifera. A guide to the classification of sponges. 2 volumes}, note = {The PDF supplied here is a proof - NOT the definitive printed text - of a chapter of the Systema Porifera}, title = {Family Spirastrellidae Ridley & Dendy, 1886. Pp. 220-223}, url = {https://vliz.be/vmdcdata/narms/narms.php?p=sourcedetails&id=8985}, year = {2002} }