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50mya- Pakicetus
Living on land and sustained mainly on a diet of plants and smaller animals; Pakicetus was the earliest known ancestor of the ancient whale. Pakicetus mysteriously vanished from the evolutionary chain when s/he became extinct due to rapidly declining sources of food on land. -
Period: to
Whale Evolution
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Ambulocetus
Drinking fresh water, Ambulocetus stayed close to land; rivers and lakes. This evolution shows development of flippers and flatter tails for swimming. -
Rodhocetus
Kidneys adapt to filter salt-water, making Rodhocetus the first ancestor of the modern whale to enter the oceans. -
36 mya- Basilosauraus dies out
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Dorudon
Resembling a modern dolphin, Dorudon migrate to polar seas to avoid the constant threat of Monster sharks. -
Modern Whales!
End.
