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.
| Siphonodendron | |
|---|---|
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| Siphonodendron sp. from Snook Point, Northumberland, UK | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hexacorallia |
| Subclass: | †Rugosa |
| Family: | †Lithostrotionidae |
| Genus: | †Siphonodendron McCoy 1849 |
| Species | |
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†S. irregulare | |
See also edit
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