1. Geologic Time Line Organisms

2. Precambrian Time Before 570 mybp
Bacteria
Algae
Worms?

3. Paleozoic Era 570-225 Million Years Before Present Common Organisms
Jellyfish
Sponges
Corals
Worms
Crinoids
Brachiopods
Trilobites

4. Corals

5. Trilobites

6. More Trilobites

7. Crinoids

8. Brachiopods

9. Horseshoe Crabs

10. Mesozoic Era – Age of Dinosaurs 225-65 Million Years Before Present Common Organisms
Ammonites – Dominated the Mesozoic seas
Dinosaurs – Dominated the Land
Archaeopterix – First bird

11. Ammonites

12. Archaeopteryx

13. Cenozoic Era – Age of Mammals 65 Million Years Before Present to the Present

14. Australopithecus afarensis 3.85-2.95 million years ago
Australopithecus afarensis is an extinct hominid that lived between 3.85 and 2.95 million years ago.[1] A. afarensis was slenderly built, like the younger Australopithecus africanus. It is thought that A. afarensis was more closely related to the genus Homo (which includes the modern human species Homo sapiens), whether as a direct ancestor or a close relative of an unknown ancestor, than any other known primate from the same time.
The most famous fossil is the partial skeleton named Lucy (3.2 million years old) found by Donald Johanson and colleagues.