Word: cetacea
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...survive on land. One form of life that evolved was a child-bearing, milk-suckling mammal. But about 50 million years ago some of the mammals that had formed the habit of eating fish returned to the seas. They were the ancient ancestors of the modern Cetacea--dolphins, porpoises and whales...
...land mammal, man, has been waging war on the sea mammals, Cetacea, for centuries. Archeologists believe Alaskan Eskimos have been whaling for over 2000 years. But some groups have been working to even the odds for the whales. In recent years controversy has arisen over whether the Eskimos should be allowed to continue killing the bowhead whale...
That seemed safe enough. Many aquatic mammals-whales,*dolphins, porpoises-belong to the order of cetacea. Thereupon Professor Corbiere grew bold. "If I dare risk a hypothesis," he ventured. "I would say that we have here a kind of hyperoodon from the North Atlantic...
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