Siphonodendron

scaleberense Siphonodendron is an extinct genus of colonial rugose corals common during the Carboniferous period.

In fossil form it now appears as a white or brown mass of short spaghetti-like threads, usually flattened during distortion of the embedding limestone.

It is in the sub-class Hexacorallia of corals with sixfold symmetry.

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