earth

by Liz Kimbrough on 20 March 2024

• Paleontologists discovered a fossilized skull of a newly described species of giant freshwater dolphin in the Peruvian Amazon, which lived around 16 million years ago and is considered the largest-known river dolphin ever found.
• The ancient creature, measuring 3-3.5 meters (9.8-11.5 feet), was surprisingly related to South Asian river dolphins rather than the local, living Amazon river pink dolphin and shared highly developed facial crests used for echolocation.
• The discovery comes at a time when the six existing species of modern river dolphins face unprecedented threats, with their combined populations decreasing by 73% since the 1980s due to unsustainable fishing practices, climate change, pollution, illegal mining and infrastructure development.
• Conservation efforts are underway, including the signing of the Global Declaration for River Dolphins by nine countries and successful initiatives in China and Indonesia, highlighting the importance of protecting these critical species that serve as indicators of river ecosystem health.

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).

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