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The Lace Crab
Marella splendens was an arthropod that lived during the Cambrian Period. It is the...
A Swimming Snail
Sea butterflies (also called pteropods) are sea snails aptly named: they are...
Hedbergella sliteri - this specific specimen is the "holotype" for this species....
These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...