Identifying Sponges

Key to California Porifera (Page 2)

( From page 1 A ): Siliceous spicules with or without spongin.
cc002aA [A.]Megascleres Monacts ONLY, NO microscleres. (with the exception of one species which may or may not have centrotylote Strongyles as microscleres).
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cc002b [B.]Megascleres Monacts with microscleres. NO Calthrops, NO centrotylote Strongyles as microscleres.
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cc002aC [C.]Megascleres Diacts ONLY. NO microscleres.
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cc002d [D.]Megascleres Diacts with microscleres. NO Calthrops.
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cc002e [E.]Megascleres Monacts AND diacts ONLY, NO microscleres.
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cc002f [F.]Megascleres Monacts and Diacts with microscleres. NO Calthrops; with OR without Rhaphides.
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cc002g [G.]Megascleres Tetracts or derivatives (Monaenes, Diaenes, Triaenes Dichotriaenes etc.) and Sigmaspires OR Microxeas OR Asters present (commonly spicules are very long - may have other spicules as well but NO Calthrops).
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cc002h [H.]Megascleres Monacts, Triacts and/or Tetracts ONLY. May have Rhaphides as microscleres. NO Calthrops.
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cc002i [I.]Calthrops ALWAYS present . May also have Monacts and/or Diacts with Asters or other microscleres.
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cc002J [J.]Hexacts or their derivatives ALWAYS present but also have other spicule types as well. The Symplastic sponges: Hexactinellida.
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