Creation Of Big Bang Theory Creation Of Earth Hadean Eon (4.6 billion to 4 billion years ago) Archean Eon (4 billion to 2.5 billion years ago) Proterozoic Eon (2.5 billion to 541 million years ago) Phanerozoic Eon (541 million years ago to the present) Paleozoic Era (541 to 252 million years ago) Mesozoic Era (252 to 66 million years age Cenozoic Era (66 million years ago to the present) Stone Age Bronze Age IRON AGE 0 BC Christ Born 1 AD Early Modern Period (roughly 1500-1800) Late Modern Period (roughly 1800-1945) Last 25 Year Last 10 Years 2024 2025 Present