TY - CHAP A1 - Van Soest, R.W.M. A1 - Hooper, J.N.A. JO - In: Hooper, J.N.A. & Van Soest, R.W.M. (eds) Systema Porifera. A guide to the classification of sponges. 2 volumes. N1 - The PDF supplied here is a proof - NOT the definitive printed text - of a chapter of the Systema Porifera C1 - Kluwer Academic / Plenum Publishers: New York, 1708 + xlviii. ISBN 0-306-47260-0 (printed version) TI - Order Spirophorida Bergquist & Hogg, 1969. Pp. 83-84 UR - https://www.marinespecies.org/afremas/aphia.php?p=sourcedetails&id=8968 PY - 2002 Y2 - 2024-03-29 ER -