@inbook{NARMS:SourceID:8974, author = {Van Soest, R.W.M. and Hooper, J.N.A.}, 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 Calthropellidae Lendenfeld, 1906. Pp. 127-133}, url = {https://vliz.be/vmdcdata/narms/narms.php?p=sourcedetails&id=8974}, year = {2002} }