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Modern Nautilus and Allonautilus species inhabit deeper waters than their extinct ancestors did over 500 million years ago.

Researchers have discovered the oldest known example of a predator-prey “arms race,” based on their study of ancient fossils. This ancient predator-prey relationship took place 517 million years ago ...

At the end of the Paleocene and beginning of the Eocene epochs, between 59 to 51 million years ago, Earth experienced dramatic warming periods, both gradual periods stretching millions of years and ...

Add Yahoo as a preferred source to see more of our stories on Google. A construction project at San Pedro High School in Los Angeles revealed nearly 9-million-year-old sea creature fossils buried ...

Skeleton season may be just around the corner, but the skeleton age dawned with the early Cambrian Period, about 538 million to 506 million years ago. In this time span, most major animal groups ...

Research teams from the Academia Sinica and National Taiwan University have documented the first discovery of five freshwater mollusk species in the Early Pleistocene Tananwan Formation of northern ...