Scientists Unveil Ancient Sea Monsters Found In Angola

The skull of a mosasaur, one segment of a full-scale reconstruction, is displayed in front of a mural painted by natural history artist Karen Carr, depicting the mosasaur’s underwater environment

When the South Atlantic Ocean was young, sea monsters ruled it.

Some of their bones have turned up along the coast of West Africa and are going on exhibit Friday at the Smithsonian Institution in Washington, D.C. They tell a story of the bloody birth of an ocean.

The fossils of giant swimming reptiles called mosasaurs have been found in the rocky cliffs of Angola, overlooking the Atlantic. It’s not a country known for fossils. Few scientists have looked there — half a century of civil war made it too dangerous. But geologically, Angola is special.