Cambrian Period

542-488 million years ago

542 mya - Cambrian Explosion530 mya – Chordates (Vertebrates)

appear526 mya – Trilobites appear

500 mya – 1st Jawless fish appear

“Agnatha”488 mya – Mass extinction

542 million years agoCambrian 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

530 million years ago

1st Chordates (Vertebrates)

Appear

526 million years ago

Trilobites Appear

500 million years ago

Jawless Fish Appear

“Agnatha”

488 million years ago

Mass Extinctionmarks the end of the

Cambrian…

What does it look like?

Picture ItWere 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!