The first vertebrates appeared in which period?

2 answers:

8 0

The first vertebrates appeared in the Paleozoic Era, specifically the Cambrian period. The vertebrates were <span>jawless fish with backbones made out of cartilages. It was thought that the first fishes evolved during this period. The correct answer to this question is letter "A. Cambrian". I hope this helps.</span>

Andre45 [30]2 years ago

7 0

Answer:

The answer is Cambrian Hopefully this helps any T4L students!

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