Amphiporida

Extinct order of sponges

Amphiporida is an extinct order of stromatoporoid sponges which lived from the mid-late Silurian to the Late Devonian. Most amphiporids can be easily distinguished by their dendroid (bush-shaped) form, resembling a thicket of thin branches. Each 'branch' has an external frame-like 'sheath' surrounding the internal structure. Pillars and isolated longitudinal canals are typical internal components, though the overall texture is more irregular than in other stromatoporoids. Laminae or cyst plates perpendicular to the axis of growth may also develop in some species.

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