Identifying Sponges

Key to California Porifera (Page 259)

( From page 258 A) Large Hypodermal Pentactins are present.
[A] GO TO PAGE 260
Hypodermal Pentactins are all smooth or granulated; they lack thorns.
cc259A.jpg
[B] GO TO PAGE 262
Hypodermal Pentactins are NOT all smooth or granulated; some are ornamented with thorns.
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