Damocles is a genus of chondrichthyan from the Mississippian age Bear Gulch Limestone of Montana and the city of Armagh, Northern Ireland.

Two species, D. serratus and D. attenuatus, have been assigned,[1][2] with D. attenuatus originally being classified as a species of the form-genus Physonemus.

[2][3] Members of the genus were carnivorous,[1] and males possessed a distinctive serrated, sword-like reproductive organ which was positioned over their head.

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