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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.

slideshow

The Ocean Throughout Geologic Time, An Image Gallery

Evidence shows that life probably began in the ocean at least 3.5 billion years...

Tue, 09/20/2011 - 15:30

Photograph of the model of a Giant Megatooth Shark, taken from the front..

slideshow

Shark Ancestors

Long before great white sharks appeared, much larger ancestors roamed the ocean....

Thu, 12/17/2009 - 17:55

A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.

slideshow

A Collection of Cambrian Fossils

When you're standing in a museum surrounded by fossils, you can almost imagine...

Tue, 10/01/2013 - 10:03