Timeline By K31TH 1111 BCE 4.6 billion years ago: The sun forms 1111 BCE 4.5 billion years ago: The earth & moon form 1111 BCE 3.8 billion years ago : cells 1111 BCE 2.7 billion years ago : cells evolve 1111 BCE 541 million years ago : sponges & corals 1111 BCE 2.45 billion years ago : oxygen 1111 BCE 530 million years ago : fish 1111 BCE 368 million years ago : ampibians 1111 BCE 230 million years ago : dinosaurs 1111 BCE 150 million years ago : birds 1111 BCE 201 million years ago : mammals 1111 BCE .0002 years ago : early humans