in vertibrats can first then vertibrates
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Vertebrates originated about 525 million years ago during the Cambrian explosion, which saw rise in organism diversity. The earliest known vertebrate is believed to be the Myllokunmingia. Another early vertebrate is Haikouichthys ercaicunensis
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Answer: yes . By carbon dating method we came to know that invertebrates came before vertebrates as vertebrates are on upper layer of earth crust
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