-
The Earth formed from plantary nebula. Oldest age-dated rocks on Earth. Fossil algae and stomatolites (prokaryotes).Fossil evidence to bacteria. Fossil evidence of cells with a nucleus (eukaryotes). First multi-celled organisms (seaweed and algae). Older marine worms and jellyfish.
-
-
3900 million years ago.
-
-
-
-
Burgess Shale animals. Animals with a notochord.
-
First fish. First fossil evidence of land plants,
-
First vascular land plants. Oldest lung fish fossil.
-
Older fossil evidence of mosses. First insects. First lobe-finned fish. First land animal. First shark. First seed plants.
-
First possible reptiles.
-
Permian system begins. Snail-backed reptiles (Dimetrodon). End of Pakeozoic, 96%of all life on Earth perished.
-
-
First crocodiles. First dinosaurs. First mammals (shrew like). First turtles.
-
Dilophosaurus, early dinosaur. First bird- Archeopteryx. Apatosaurus and Brachiosaurus. Stegosaurus.
-
First flowering plants. Duck-billed dinosaurs. Protoceratops. Triceratops. Tyrannosaurus Rex. Velociraptor. End of Mesozoic, probably meteor or comet impact.
-
-
First ancestors of dogs and cats -65 MYA. Grasses become widespread - 60 MYA. First ancestors of pigs and deer - 57 MYA. First horses - 55 MYA. First ancestors of rabbits 45 MYA. First monkey - 39 MYA. Oldest human like ancestors (hominids) - 4 MYA.
-
First of 4 ice ages - 1 MYA. Oldest direct human - ancestor fossil, Homo habilis - 1 MYA. First modern man, Homo sapiens - 0.1 MYA. Mammoth and mastodon bones - 0.05 MYA. Revolutionary War - 235 years ago. World War Two - 70 years ago.