- Oscula:
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Fringe: oscular fringe
- Ectosome:
-
Architecture: A dermal cortical skeleton of tangentially arranged Triradiates with tufts of oxeas extending beyond the surface and a tangential layer of endosomal Triradiates and Quadriradiates.
- Skeleton:
-
Composition: Carbonate
Architecture: Syconoid.
- Megasclere:
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Shape: Cortical Triradiates
- Megasclere:
-
Shape: Endosomal Triradiates-Quadriradiates
- Megasclere:
-
Shape: Oxeas (tufts at surface).
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