👉 The term "neozoic" refers to the era or stage of Earth's history, which spans from the time of the dinosaurs until around 54 million years ago. This period is considered a part of the Mesozoic Era and marks the end of the Paleogene (late Cretaceous) and the beginning of the Triassic Period. The Neozoic period saw a significant shift in Earth's climate, with the formation of the Earth's atmosphere and oceans, as well as the