Question:
The first vertebrates appear in the fossil record during the
Last updated: 2/17/2023
![The first vertebrates appear in the fossil record during the](https://media.kunduz.com/media/sug-question-candidate/20230217012144676396-4310689.jpg?h=512)
The first vertebrates appear in the fossil record during the 1 Cambrian Period O2 Proterozoic Era 3 Triassic Period 4 Carboniferous Period
Last updated: 2/17/2023
The first vertebrates appear in the fossil record during the 1 Cambrian Period O2 Proterozoic Era 3 Triassic Period 4 Carboniferous Period