Preceden

TIMELINE

Eras

Paleozoic

542000000 BC - 251000000 BC

http://library.thinkquest.org/5341/pzpic.gif

Mesozoic

251000000 BC - 65500000 BC

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSBv0OUnBwnjwoBFAgb8JDcm4S9N0e1M8_i0Ac5ZxEKcWnPn7El

Cenozoic

65500000 BC - 2013 AD

http://www.eas.unl.edu/~tfrank/History%20on%20the%20Rocks/Nebraska%20Geology/Cenozoic/cenozoic%20web/5/Flora%20and%20Fauna_files/eocene.jpg

Paleozoic

Cambrian

542000000 BC - 488000000 bc

http://www.scotese.com/images/514.jpg

Ordovician

488000000 BC - 444000000 BC

http://tucsoncitizen.com/wryheat/files/2009/09/514.jpg

Silurian

444000000 BC - 416000000 BC

http://astrobio.net/albums/origins/agb.jpg

Devonion

416000000 BC - 359000000 BC

http://www.xtimeline.com/__UserPic_Large/106499/evt110412215700323.jpg

Carboniferous

359000000 BC - 300000000 BC

http://images.nationalgeographic.com/wpf/media-live/photos/000/008/cache/carboniferous-landscape_869_600x450.jpg

Permian

300000000 BC - 251000000 BC

http://images.nationalgeographic.com/wpf/media-live/photos/000/009/cache/dimetrodon_921_600x450.jpg

Mesozoic

Triassic

251000000 BC - 200000000 BC

http://upload.wikimedia.org/wikipedia/commons/thumb/e/e6/Blakey_220moll.jpg/240px-Blakey_220moll.jpg

Jurassic

200000000 BC - 145500000 BC

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRhpAgigmizFaZbU8-7sWI-9DCs__CNhIY_HB4I02mVqeTP1nQq

Cretaceous

145500000 BC - 65500000 BC

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcRVw9qIpWpOJJOSoBcDgbGltj1RkgdTMEyKzXwgFKBf7rGHcww4ZQ

Cenozoic

Paleogene (Paleocene/Eocene/Oligocene)

65500000 BC - 23000000 BC

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRQLKvr-Vm9Z-z-MZsW1IEXyVBvV1Tise7nyyBfGj8T4SkOfsfH0w

Neogene (Miocene/Pliocene)

23000000 BC - 2588000 BC

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSAcEx6l9Pi62xJ-pXjR2qvxJG-oOgwytvjp3H8AAVJmx7Y9hjfJQ

Quaternary (Pleistocene/Holocene)

2588000 BC - 2013 AD

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTvCwAYssayOvT55mQrkk1HI3n3YVVLxcILUVb8Cn8fOsZ4cBi_

Triceratops

Triceratops

70000000 BC

https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSQ_uyLFqYOf0alAYvBioa__Ik94AwClCnzzmG9xRxH5uQDO7uy