These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...
Where ocean currents were strong, ancient rudist “recliners” lay unattached on...
Rudist clams are mollusks that went extinct about 65 million years ago. They were...
Head to Foot
The lesson begins with a broader introduction on new species discovered around...
Tue, 11/24/2009 - 11:48
Sea Level Rise
The ocean never stops moving. When you visit the beach, waves roll in and recede...
About 100 million years ago, during the heyday of the dinosaurs, reefs were built...
Fri, 12/04/2009 - 14:25