Dinosaurs were laying eggs long before chickens existed so eggs came first

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Are You A Zombie?

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  Dinosaurs were laying eggs long before chickens existed so eggs came first

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  So what came first: Egg or Chicken?

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  "what came first" belongs in perentheses?

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  chickens evolved from other species, so the egg of which the first chicken came form, was the egg of the species the chicken evolved from, not another chicken...so the EGG came first