The Express Tribune on MSN19 小时
Whales evolved from Pakicetus, an ancient mammal found in Pakistan
One of the first cetaceans, Pakicetus, was a goat-sized creature that lived along the banks of lakes and rivers in ...
Natural History Museum%2c London1 年
When whales walked on four legs
It also used its tail for swimming. An artist's impression of Dorudon, an ancestor of modern whales Further along this evolutionary journey we find Dorudon, which lived 40 to 33 million years ago.