| ( From page 002 J) Hexacts or their derivatives ALWAYS present but also have other spicule types as well. The Symplastic sponges: Hexactinellida. | |||||||||
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| ( From page 002 J) Hexacts or their derivatives ALWAYS present but also have other spicule types as well. The Symplastic sponges: Hexactinellida. | |||||||||
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