Answer: Here's a timeline of the Earth's history, from the Precambrian to the Cenozoic eras:
- Precambrian Era (4.6 billion years ago - 541 million years ago)
- Formation of the Earth
- Appearance of prokaryotes (3.5 billion years ago)
- Appearance of eukaryotes (1.5 billion years ago)
- First multicellular organisms (1 billion years ago)
- Phanerozoic Eon (541 million years ago - present)
- Paleozoic Era (541 million years ago - 252 million years ago)
- Cambrian Explosion (541 million years ago)
- First vertebrates (530 million years ago)
- First land plants (475 million years ago)
- First amphibians (365 million years ago)
- Extinction of many marine and terrestrial species (252 million years ago)
- Mesozoic Era (252 million years ago - 66 million years ago)
- Age of Dinosaurs (252 million years ago - 66 million years ago)
- First mammals (225 million years ago)
- First birds (150 million years ago)
- Extinction of non-avian dinosaurs (66 million years ago)
- Cenozoic Era (66 million years ago - present)
- Age of Mammals (66 million years ago - present)
- First primates (55 million years ago)
- Appearance of humans (2.5 million years ago)
- Holocene epoch (11,700 years ago - present)
Step-by-step explanation: