Which group of animals is the most recent to evolve?

Question

Quizplus · Accepted Answer

Mammals are the most recent group of animals to evolve. They first appeared in the late Triassic period, around 200 million years ago. In contrast, invertebrates are the oldest and most diverse group of animals on Earth, with a fossil record dating back over 550 million years. While amphibians and reptiles both evolved from fish during the Devonian period (around 400 million years ago), mammals did not evolve until much later in the Triassic period.

Which Group of Animals Is the Most Recent to Evolve