Sponge Spicules

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Spicules may be made of silica or calcium carbonate, and vary in shape from simple rods to three-dimensional “stars” with up to six rays. Spicules are produced by sclerocyte cells, and may be separate, connected by joints, or fused.

Keywords

sponge, spicules

Galleries

Sponges

Source

Winchell, Alexander Sketches of Creation (New York, NY: Harper & Brothers, 1870)

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