Earth’s atmosphere, oceans, and continents began to form during the first several hundred years of (1 point) a. precambrian time b. the paleozoic c. the mesozoic era < - d. the cenozoic era 8. during the devonian period, animals that could live on land began to evolve. these animals still spent part of their lives in the water. what were these animals called? a. trilobites b. reptiles < - c. amphibians d. dinosaurs