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18" fossil fragment of the Dimetrodon's iconic spine
Display and Storage Box with Magnetic Clasp
NASA disposition paperwork received with this item indicates this particular tile was removed after the Challenger’s sixth mission (STS-41-G) which flew on October 5
We are pleased to offer it once again as a single item
Cretaceous Sea Urchin White Topaz Bracelet metals 18" fossil fragment of theAncient 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 places where those oceans once were and have inspired human cultures for thousands of
