Livyatan

The predatory whale that answers megalodon. Livyatan is known from a skull about 3 meters long found in the coastal desert of southern Peru, in rocks 12 to 13 million years old, with teeth more than 36 centimeters long. From that skull its describers estimated a body of 13.5 to 17.5 meters, a raptorial cousin of the sperm whale that probably fed on baleen whales. The length is an educated guess from one head, but it puts Livyatan among the largest hunters that ever lived, and a fair match in length for a large megalodon.