The most famous creatures that have roamed the earth besides humans and the Animals we know today have ... planet during the Pliocene epoch in South America and some parts of North America ...

These largely terrestrial frogs may have been as ill-tempered and aggressive as their living relatives, the ceratophyrines of South America, scientists say. Ceratophyrines are nasty sit-and-wait ...

April 18. -- Perfectly preserved bones of gigantic prehistoric animals which roamed the Allegheny Mountains were discovered by a blast in the quarries of the American Lime and Stone Company along ...