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Please Note: Each fossil is a unique creature that lived more than 66
INSTRUCTIONS:
This specimen is a Roman arrowhead
Scientific experiments featured heavily in the rotation
and Field would be treated to awards and accolades from across the world
Cretaceous Sea Urchin Pendant Necklace Size:Large (Bezel) Please Note: Each fossil isAbove: Artist's Concept of the Tethys Sea during the Cretaceous (Source: Mini Museum) Ancient sea urchins, small and spiny creatures, have existed for millennia. These echinoids first appeared in oceans 450 million years ago, where they fed on algae and sponges. Their flexible spines purpose was two fold: to protect against predators and allow for the slow crawl towards the urchins next meal. Buried for millions of years, their fossils appear in many
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