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Smithsonian researchers eat a meal in preparation for a fossil excavation
slideshow

A Squalodontid Success

 On a beach in Piña, Panama the tide is rolling out. Faint outlines of skeletal......
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.......
an ammonite fossil with a carved snake head
Photo

Snakestones

Here is an ammonite, an extinct, shelled cephalopod related to the...