
The oldest known ancestor of megalodon was a 55-million-year-old shark called as Otodus obliquus. It was around 10 meters in length. This shark history goes back to Cretalamna appendiculata which was some 105 million years ago making megalodon lineage over 100 years old. “As we’ve found more and more fossils, we’ve realized that the ancestor to the great white shark lived alongside megalodon. Some scientists think they might even have been in competition with each other,” said Emma.