From Land to Sea: The Evolution of Whales. Nicholas McDonald. Early Ancestors. Pakicetus was a small land predator that lived in coastal habitats. It shows similar ear structure to modern whales that is unlike any other mammals.
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Pakicetus was a small land predator that lived in coastal habitats.
It shows similar ear structure to modern whales that is unlike any other mammals.
Ambulocetus was more adapted to aquatic life and spent time both in and out of water.
The next step in whale evolution Maiacetus lived a lifestyle similar to sea lions today.
Dorudon was the first ancient whale to live a fully aquatic lifestyle.
Tail flukes have developed but vestigial hind limbs are still plainly visible.
None of these ancient whales are direct ancestors of modern whales as far as we know.
Whale Evolution Video
Smithsonian Institute: http://ocean.si.edu/ocean-videos/evolution-whales-animation
National Geographic: http://ngm.nationalgeographic.com/2010/08/whale-evolution/mueller-text/2
Understanding Evolution: http://evolution.berkeley.edu/evolibrary/article/evograms_03