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an ammonite fossil with a carved snake head
Photo

Snakestones

Here is an ammonite, an extinct, shelled cephalopod related to the octopus and...
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...
Wed, 06/22/2011 - 17:47
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
Forams are tiny single-celled organisms.
slideshow

Foraminifera

 Microscopic, single-celled organisms called foraminifera have a fossil record that...
Thu, 03/25/2010 - 16:23