Identifying Sponges

Key to California Porifera (Page 129)

( From page 002 F) Monacts and diacts with microscleres. NO Calthrops; with OR without Rhaphides.
[A] GO TO PAGE 130
NO Acanthostyles present;
Styles may have small spines on head and/or on tip.
[B] GO TO PAGE 152
Acanthostyles present, fully or obviously acanthose.
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