Norwegian Oil Company Accidentally Unearths Dinosaur Bone from North Sea Seabed

In a remarkable 1997 discovery, Statoil (now Equinor) engineers drilling at the Snorre oil field in the Norwegian North Sea pulled up a 4-centimetre knucklebone belonging to a Plateosaurus — the first confirmed dinosaur fossil ever found in Norway and still the world’s deepest at 2,256 metres (7,400 feet) beneath the seabed.

The bone came from the Late Triᴀssic Lunde Formation (~210–195 million years old). At that time the North Sea region was not ocean but a vast river floodplain on the supercontinent Pangaea. The 9-metre, 4-tonne herbivorous dinosaur lived and died on land; after death its bone was rapidly buried in river-channel sediments.

Over the next 200 million years, plate tectonics and relentless sedimentation did the rest. As the Atlantic opened, the crust subsided dramatically while kilometres of younger marine deposits piled on top, pushing the fossil more than two kilometres beneath what is now the North Sea floor.

This accidental find during routine oil exploration remains a textbook example of how terrestrial remains can end up in extreme offshore settings through completely normal geological processes — river transport followed by deep burial — rather than any aquatic lifestyle or catastrophic event.

Equinor has preserved the specimen, which is now studied by Norwegian palaeontologists. It continues to serve as powerful proof that dinosaurs once walked where oil rigs now stand, and that Earth’s dynamic crust can preserve ancient life in the most unexpected places.