Identifying Sponges

Key to California Porifera (Page 164)

( From page 162 A) 2 size classes of Acanthostyles present.
[A] GO TO PAGE 169
Acanthostyles standing erect with heads embedded in a basal plate of spongin.
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[B] GO TO PAGE 165
Acanthostyles NOT standing erect with heads embedded in a basal plate of spongin.
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