HORSESHOE CRAB SHELL>LIVING TRILOBITE?>LIVING FOSSIL !

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COMPLETE HORSESHOE CRAB SHELL FROM MOLT . FIRST APPEARED IN OCEANS IN THE UPPER SILURIAN ABOUT 400 MILLION YEARS AGO  IS A LIVING FOSSIL .  IN THE PHYLUM CHELICERATA ,RELATED TO INSECTS AND SPIDERS.  ALTHOUGH TRILOBITES ARE EXTINCT ,HORSESHOE CRABS CLOSELY RESEMBLE TRILOBITES AND EVEN MORE SO IN THE LARVAL STAGE . LATIN NAME-Limulus polyphemus .  MOST SCIENTISTS AGREE THAT HORSESHOE CRABS ARE THE CLOSEST LIVING THING TO A TRILOBITE.

  NO HORSESHOE CRABS WERE KILLED TO COLLECT THESE SPECIMENS . THESE ARE THE SHELLS THE ANIMAL SHEDS AS IT GROWS .  THE SPECIMENS ARE AT LEAST 12"  IN LENGTH .

      THESE PRIMITIVE MARINE ARTHROPODS INHABITED THE OCEANS  WAY BEFORE MOST OF THE CREATURES THAT LIVE TODAY AND HAVE OUTLIVED MANY MORE .   IMPORTANT IN MEDICAL RESEARCH FOR ITS' UNIQUE BLOOD CLOTTING AND IMMUNE SYSTEM QUALITIES ALONG WITH OTHER MEDICAL USES. 

    THESE ARE EXCELLENT SPECIMENS FOR EDUCATIONAL USE OR JUST FOR A UNIQUE  DISPLAY .  "BEST SPECIMENS ON EBAY ."

        THIS ITEM WILL BE CAREFULLY PACKAGED AND SHIPPED PRIORITY MAIL WITH OPTIONAL INSURANCE!  $1.65 per $50 coverage upon request.

       THANK YOU FOR LOOKING!