Answer:
Arranging the events from the oldest to the youngest-
1. Cambrian explosion
2. dominance of amphibians
3. Earth hit by a large carbonaceous meteorite
4. diversification and dominance of mammals
5. extinction of giant mammals like mastodons
Explanation:
The Cambrian explosion took place on earth about 540 million years back, where majority of the animal species appeared and slowly started to evolved, which formed the primitive life forms on earth. This event took place because of the sudden increase in the oxygen concentration on earth that facilitate the appearance of new organisms, and it lasted for nearly 15 to 25 million years, resulting in the production of many phyla (metazoan).
The amphibian were first evolved during the Devonian period that ranges from about 420 to 360 million years back. They slowly became the dominant species during the Carboniferous and the Permian period.
By the end of Permian, there occurred a global mass extinction event, due to the meteoric impact on earth, which is commonly known as the Permian-Triassic (P-T) boundary, about 250 million years back. This meteorite was largely comprised of carbon materials.
After this mass extinction event, there occurred divergence of mammals species even though they existed during the carboniferous period, but they were dominant after the extinction of dinosaurs, about 65 million years back.
The mammals like mastodons were abundant during the Cenozoic and they slowly got extinct about 10,000 years back during the time of Pleistocene period.
