Question

First vertebrates appear in which period of the paleozoic era?

Answer 1

hagfish were the first vertebrates to appear on land during the period of the palaeozoic eras

Answer 2

Answer:

Devonian period

The Devonian period (410 to 360 million years ago) saw a continued diversifiaction of life on the land, including the first terrestrial vertebrates, the amphibians, and the first forests of trees.