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Dugongs, along with manatees, make up a group of marine mammals called sirenians or...
Hedbergella sliteri - this specific specimen is the "holotype" for this species....
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...