The Murrayonida are an order of sea sponges in the subclass Calcinea.
The order consists of four known species, in three families: Family Murrayonidae Dendy & Row, 1913 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.
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