Pebanista yacuruna is the closest relative of living South Asian river dolphins (genus Platanista). Artistic reconstruction of Pebanista yacuruna. Image credit: Jaime Bran. Pebanista yacuruna lived in the Miocene proto-Amazonia of Peru approximately 16 million years ago. The ancient dolphin had an estimated body length of 2.8 to 3.5 m (9.2-11.5 feet), making it the largest freshwater species of odontocete (dolphins, porpoises, and all other whales...
