- Skeleton:
-
Composition: Carbonate
Architecture: 3 layers (Cortical and Tubular -triaradiates arranged in circles around wall)(Gastrial quadiradiates with only one ray extending into the spongocoel)
- Megasclere:
-
Shape: Triradiates
- Megasclere:
-
Shape: Quadriradiates
- Surface:
-
Texture: Hispid
- Oscula:
-
Rims: with or without spicular fringe
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