07-16-2018, 06:29 AM
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If you remember a ways back I had stated that scorpions were older than sharks by about 10 million years (430M vs 420M). The horseshoe crab is even older: 450 million years.
Though they are called "crabs" they are not crustaceans. They are arthropods and have more in common with spiders than they do with crabs.
Last edited by Lee Stewart; 07-16-2018 at 06:34 AM.
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