Identifying Sponges
Key to California Porifera (Page 143)
( From page 134 B)
Microscleres NOT Sigmas ONLY, but may include Onychaetes OR Rhaphides.
[A]
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Immature Styles looking like Raphides may be present.
Onychaetes absent.
[B]
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NO Rhaphides or Styles looking like Raphides.
Onychaetes present.
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