Four-legged whales once straddled land and sea


artistic rendering of peregocetus pacificus

Meet Peregocetus pacificus.

Whales belong in the ocean, right? That may be true today, but cetaceans (whales, dolphins, porpoises) actually descended from four-legged mammals that once lived on…
via Popular Science "http://bit.ly/2G2VhtC"

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