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 ...

Cetaceans, comprising whales, dolphins and porpoises, represent a striking example of terrestrial mammals that re-inforced their life history in the marine realm. Originating in the early Eocene from ...

Life around the ocean surface can appear strangely similar from a distance. A dorsal fin cuts through the water, a dark body rises briefly to breathe, and then disappears again. Dolphins, whales and ...

Wadi Al-Hitan in Egypt’s Western Desert preserves one of the most important fossil records in the world for understanding how whales evolved from land mammals into fully aquatic animals. The site ...