Identifying Sponges

Key to California Porifera (Page 083)

( From page 075 B) Reticulated skeleton, may have some spicule confusion but this never obscures the basic reticulate pattern. Skeletal structure may at times appear thick and firm but always obviously reticulate, compressible. Never with a rock-like consistency.
[A] GO TO PAGE 084
Mean and greatest oxea length > 200 μm.
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[B] GO TO PAGE 088
Mean and greatest oxea length < 200 μm.
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