| Acanthophractida | |
|---|---|
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| (unranked): | |
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| Order: | Acanthophractida
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Acanthophractida is an order of marine radiolarians in the subclass Acantharia; skeleton includes a latticework shell and skeletal rods.[1] They have a latticework shell, which can be spherical or ovoid and fused with the skeletal rods. The shell is concentric with the central capsule. "The body is usually covered with a single or double gelatinous sheath through which the skeletal rods emerge".[2]