Dorudon was an early whale ancestor that both baleen and toothed whales evolved from, as seen on When Whales Walked: Journeys In Deep Time. Courtesy of Twin Cities PBS.
When Whales Walked: Journeys In Deep Time
Meet the ancient ancestors of four iconic creatures: crocodiles, birds, whales and elephants. Join top scientists on a global adventure as they follow clues from the fossil record and use 21st century technology to make exciting new discoveries.
1 hour 56 minutes