Ambulocetus

Ambulocetus was an early cetacean that could walk as well as swim. Along with other members of Ambulocetidae, it is a transitional fossil that shows how whales evolved from land-living mammals. It is also named as the walking whale because of this. Ambulocetus lived in the Early Eocene (50 to 48 million years ago) of Pakistan. When the animal was ...
Found on http://en.wikipedia.org/wiki/Ambulocetus

Ambulocetus

Ambulocetus natans (meaning 'walking whale that swims') is an extinct mammal the size of a sea lion, 10 feet (3 m) long and about 650 pounds. Its limbs allowed it to swim and could also support it on land. It had long, powerful jaws with shark-like teeth, a small brain, and a pelvis fused to its backbone (like land-dwelling mammals but unlike whale...
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
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