Murrayonida


The Murrayonida are an order of sea sponges in the sublass Calcinea.

Taxonomy

The order consists of four known species, in three families:
Family Murrayonidae Dendy & Row, 1913
Family Lelapiellidae Borojevic, Boury-Esnault & Vacelet, 1990
Family Paramurrayonidae Vacelet, 1967
Murrayonida are distinguished from other Calcinea by having a reinforced skeleton; like another line of Calcinea, the Leucettidae, but unlike most other Calcinea, the Murrayonida sponges also have a cortex covering the cormus and a leuconoid aquiferous system.