Their cartilaginous skeletons don’t fossilise all that well and, instead, palaeontologists are much more likely to just discover shark teeth.
The research was led by Sebastian Stumpf from the University of Vienna and was presented in the journal PeerJ.
The shark fossil is now housed at the Etches Collection in the Museum of Jurassic Marine Life of Kimmeridge.
The researchers believe its discovery will help shed new light on the hybodontiform family tree.
Hybodontiforms or hybodonts are an extinct class of shark-like beasts that appeared during the Late Devonian, about 361 million years ago.