Which group of vertebrates was the first to evolve a waterproof egg, which allowed the group to move away from water, deeper onto dry land?

Question

Quizplus · Accepted Answer

Reptiles were the first group of vertebrates to evolve a waterproof egg, known as the amniotic egg. This adaptation allowed them to reproduce away from water, facilitating their expansion into diverse terrestrial environments.

Which Group of Vertebrates Was the First to Evolve a Waterproof