Subclass Calcinea
Order Murrayonida

taken from 'Sponguide' by J.N.A. Hooper (Queensland Museum, Brisbane)

Definition: Reinforcement of the skeleton composed of either spicule tracts, calcareous plates or a rigid aspicular skeleton; canal system leuconoid; diapasons (tuning-fork shaped triradiates) or modified biradiates present and generally fasciculated.

With 3 families (see menu left).

PDF Version of the Calcarea Chapter