Identifying Sponges

Key to California Porifera (Page 165)

( From page 164 B) Acanthostyles NOT standing erect with heads embedded in a basal plate of spongin.

[A]

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Diacts = Obvious Tornotes.
Tornote size: < 260 μm.

[B]

GO TO PAGE 166

Diacts = Smooth Subtylotes; No Tornotes present but Subtyolotes may be confused with Tornotes.
Subtylote Size: to 337 μm.