A grand division of the Invertebrata, including the sponges; -- called also Spongiae, Spongida, and Spongiozoa. The principal divisions are Calcispongiae, Keratosa or Fibrospongiae, and Silicea.
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Porifera
Encyclopedia Britannica
PORIFERA. See Sponges.
9th ed. Encyclopædia Britannica, vol. 19, p. 519
[3 words — estimated reading time: 1 minute]
[3 words — estimated reading time: 1 minute]
One of the Polifera.
The Polifera.
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