Setting the stage : rocks, fossils, and evolution -- The oldest marine mammals : whales and sea cows -- Later-diverging whales : Neoceti -- Aquatic carnivorans : pinnipeds and a bear-like carnivoran - ...

Paleontologists have unearthed fossils of a previously unknown extinct marine mammal species, offering fresh perspectives on the evolutionary history of walruses and their relatives. The discovery ...

Although an extinct animal was from a different group of marine mammals, an examination of fossils showed it evolved a way of eating that was very similar to that of modern walruses. By Asher Elbein ...

At some point in evolutionary history, whales and dolphins passed a threshold their bodies could never recover from. Scientists now know exactly what pushed them past it, and which ocean mammals are ...

Scientists have discovered a 246 million-year-old marine reptile fossil, the oldest of its kind to be found in the Southern Hemisphere, shining a new light on the early evolution of marine mammals.

A dolphin breaking the surface for air can seem like a reminder of its mammalian past. But evolution is not nostalgia. The same body that still needs oxygen from the atmosphere is also one of the ...

Add Yahoo as a preferred source to see more of our stories on Google. Field photos of the Khugenetsavkhlant badlands in the Eastern Gobi Desert of Mongolia, which is where Tamirkhan balcarceli was ...