TY  - CHAP
AB  - Calcarea Bowerbank (Porifera) includes sponges having a mineral skeleton composed entirely of calcium carbonate, consisting of free, rarely linked or cemented, di-, tri-, tetra- and/or polyactinal spicules, sometimes with a solid basal calcitic skeleton, and with blastula larvae and viviparous mode of reproduction. Two Recent subclasses are recognised, Calcinea and Calcaronea, containing five orders, 22 families and 75 valid genera, with species exclusively marine and distributed worldwide.
A1  - Manuel, M.
A1  - Borojevic, R.
A1  - Boury-Esnault, N.
A1  - Vacelet, J.
DO  - 10.1007/978-1-4615-0747-5_115
JO  - In: Hooper, J.N.A.; Van Soest, R.W.M. (eds) (2002). 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<br/>
C1  - Kluwer Academic/Plenum, NY, 1708 + xvliii. ISBN 0-306-47260-0 (printed version)
TI  - Class Calcarea Bowerbank, 1864. Pp. 1103-1110
UR  - https://marinespecies.org/afremas/aphia.php?p=sourcedetails&id=9087
PY  - 2002
Y2  - 2026-04-18
ER  -