Named By: Laurie - 1892.
Classification: Arthropoda, Chelicerata, Eurypterida.
Species: P. ornatus (type).
Known locations: Scotland - Downton Sandstone Formation, Fish Bed Formation, Kip Burn Formation, Reservoir Formation, Slot Burn Formation.
Time period: Late Silurian.
Fossil representation: Partial remains of several individuals.
Parastylonurus is a genus of eurypterid that lived in the British Isles during the late Silurian.