| Named By: | E. Nielsen in 1932 |
| Time Period: | Permian |
| Location: | Canada, British Columba. Greenland. USA, Missouri |
| Size: | Measurements unavailable |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Several individuals at various states of preservation including teeth, skulls, post cranial remains, pectoral fins and at least one caudal fin |
| Classification: | | Chordata | Chondrichthyes | Holocephali | Eugeneodontida | Caseodontidae | |
Fadenia is an extinct genus of eugeneodontid holocephalid from the Permian of Greenland.