If you watch films of dolphins and other whales swimming, you'll notice that their tailfins aren't vertical like those of fishes, but horizontal. In 2001, scientists found fossils which confirmed the fact that this mammal lived entirely on the land and never went into the water.Why did the descendants of Pakicetus eventually begin moving into the water and evolving into whales?

After all, it was about 3 feet long and weighed about 50 pounds.

Pakicetus est un genre éteint de cétacés, appartenant à la famille des pakicétidés, qui sont des mammifères terrestres ongulés disparus, considérés comme les plus anciens ancêtres connus des cétacés modernes.

Fossil representation: ... as the aforementioned Ambulocetus had ears that worked best when submerged in the water.‭ ‬This indicates that Pakicetus itself spent more time out of the water than in it.

You can easily see this if you watch a dog running.

Pages 4; Ratings 92% (37) 34 out of 37 people found this document helpful. In this artists reconstruction, Ambulocetus is shown living like a crocodile, hunting land mammals near the shore. Time period: Ypresian of the Eocene.

Pakicetus was a carnivor and a mammal which lived where current day Pakistan is.

A type of baleen whale, humpback whales reach up to 50 feet long.

Pakicetus: 50 MY old.

Rodhocetus was a genus of prehistoric whales which lived approximately 47 million years ago during the Early Eocene Period.

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