Edestus, also known as the Coal shark or the "Scissor-tooth shark", is a genus of shark that lived throughout the world's oceans during the Late Carboniferous Pennsylvanian age. All of the species are known only from their teeth. The term "edestid" is often used to refer to any or all members of the order Eugeneodontiformes, though, strictly speaking, "edestid" should be used only to refer to members of the family Edestidae.