They don't look anything like whales to me. From All That's Interesting:
According to Gizmodo, the discovery of this new Peregocetus pacificus species has shed new light on the evolution of these seafaring mammals. Fossil evidence has established that modern dolphins and whales derived from small, four-limbed, hoofed animals that lived in South Asia during the Eocene around 50 million years ago. The scientific community had previously established that these animals made it to North America 41.2 million years ago. What makes this latest discovery so significant is that this quadrupedal whale is 42.6 million years old — thus forcing evolutionary biologists to reassess established timeframes. Additionally, this discovery, published in the journal Current Biology, makes it clear that ancient whales originally called South America — not North America — their first home in the Western Hemisphere. (Read more.)Share
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