Holocystis
| Holocystis Temporal range:  | |
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| Scientific classification   | |
| Kingdom: | Animalia | 
| Phylum: | Cnidaria | 
| Subphylum: | Anthozoa | 
| Class: | Hexacorallia | 
| Order: | Scleractinia | 
| Family: | †Cyathophoridae | 
| Genus: | † Lonsdale, 1850[1] | 
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Holocystis is a genus of prehistoric stony corals.
References
- ^ Description of the fossils of the Chalk Formation. Notes on the corals. W Lonsdale, The geology and fossils of the Tertiary and Cretaceous …, 1850
External links