Key to California Porifera (Page 078)
( From page 077 B)
Oxeas to 300-400 μm, never as large as 440-480 μm. Skeleton halichondriid OR mixture of halichondriid structure and loose tracts OR heavy reticulation of multispicular tracts; very dense, often with rock-like consistency.
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Typical halichondriid structure; may have multispicular tracts as well.
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Heavy, dense reticulation, often with rock-like consistency.
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