What is one of the microsporic siliceous spicules which occur abundantly in the texture of sponges, and are sometimes found fossil, as in flints called?
spongiolite — One of the microsporic siliceous spicules which occur abundantly in the texture of sponges, and are sometimes found fossil, as in flints. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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