-
The earth was formed 4600 million years ago
-
-
Oxygen first entered the atmosphere 3500 mya
-
1sts forms of multicellular life are formed 3400 mya
-
The first eukaryotes were formed 2100 mya
-
444 mya the graptolite sea creatures went extinct
-
375 mya the trilobites went extinct
-
270 mya pangea was formed
-
200 mya pangea broke up
-
200 mya a jawless eel-like vertebrae named the condont went extinct
-
Dinosaurs go extinct
-
The first homosapiens came to earth