By Liz Kimbrough A team of paleontologists found a giant fossilized skull along the shore of the Napo River in the Peruvian Amazon. To their surprise, the relic belonged to a newly described species of giant freshwater dolphin. This colossal creature swam in the rivers of the Amazon around 16 million years ago and is considered the largest-known species of river dolphin to have ever lived, measuring 3-3.5 meters (9.8-11.5 feet). Artistic reconstruction of Pebanista yacuruna in the murky waters of the Peruvian proto-Amazonia. Image by Jamie Bran. “As soon as I recognized it, I saw the teeth soc…