1. Cambrian
Period

2. 542-488 million years ago 542 mya - Cambrian Explosion
530 mya – Chordates (Vertebrates) appear
526 mya – Trilobites appear
500 mya – 1st Jawless fish appear
“Agnatha”
488 mya – Mass extinction

3. Organisms become more complex and have shells.
542 million years ago
Cambrian Explosion
Organisms become more complex and have shells.
How does this compare to fossils that were found in the Proterozoic Eon?
Corals
Jellyfish
Snails
Sponges
Echinoderms

4. 1st Chordates (Vertebrates)
530 million years ago
1st Chordates (Vertebrates)
Appear

5. 526 million years ago
Trilobites Appear

6. Jawless Fish Appear “Agnatha”
500 million years ago
Jawless Fish Appear “Agnatha”

7. Mass Extinction marks the end of the Cambrian…
488 million years ago
Mass Extinction marks the end of the Cambrian…

8. What does it look like?

9. Picture It Were there terrestrial animals or plants?
What would the land have looked like?
Was all life found in the sea or marine environments?
THERE WAS NO LIFE ON LAND!