Identifying Sponges

Key to California Porifera (Page 009)

( From page 003 B) Megascleres NEVER just Styles or Styles to Subtylostyles ONLY. Spicules may include combinations of Acanthostyles, Styles to Subtylostyles, Tylostyles and Tylostrongyles, OR Tylostyles ONLY.
[A] GO TO PAGE 010
Megascleres include Acanthostyles.
[B] GO TO PAGE 011
Megascleres do NOT include Acanthostyles.
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