An illustration of German-born fossil collector Albert Koch's "Hydrarchos" as it appeared on display. From Fowler, O.S. 1846. The American Phrenological Journal and Miscellany, Vol. 8. New York: ...

For tens of millions of years, whales have been a part of the oceans. Because of this, it would be easy to believe that whales evolved from aquatic creatures as the oceans warmed and became more ...

Call it an unfinished story, but with a plot that's a grabber. It's the tale of an ancient land mammal making its way back to the sea, becoming the forerunner of today's whales. In doing so, it lost ...

Alfred the aetiocetid had teeth but needed a better way to capture his tiny prey. Credit: Carl Buell Baleen whales, such as the gigantic 30m-long blue whale, are the largest animals that have ever ...