Hyalospongia


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Hyalospongia

[‚hi·ə·lō′spən·jē·ə]
(paleontology)
A class of extinct glass sponges, equivalent to the living Hexactinellida, having siliceous spicules made of opaline silica.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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