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Demospongiae

Demospongiae (Demospongea; phylum Porifera) A class of sponges which occur in both marine and freshwater environments. They have a leucon body structure. Both siliceous spicules and organic fibres may form a skeleton, but primitive types may lack skeletal support. This is the largest group of sponges and it first appeared in the Cambrian.

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"Demospongiae." A Dictionary of Zoology. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/demospongiae-0

Demospongiae

Demospongiae See DEMOSPONGEA.

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"Demospongiae." A Dictionary of Earth Sciences. . Encyclopedia.com. 21 Aug. 2017 <http://www.encyclopedia.com>.

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"Demospongiae." A Dictionary of Earth Sciences. . Retrieved August 21, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/demospongiae