Identifying Sponges

Key to California Porifera (Page 235)

( From page 001 C) Spongin fiber skeleton only.
[A] GO TO PAGE 237
Dendritic spongin fibers arise from a basal plate of spongin.
Fibers may branch but do NOT anastomose.
May have a special ectosomal reticulation.
[B] GO TO PAGE 236
NO basal plate of spongin and fibers not dendritic.
Fibers anastomose to form a reticulation.
No special ectosomal reticulation.
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