CAMBRIAN PERIOD

ANIMALS

• Arthropod- most plentiful species
• Anomalocaris- top of food chain
• Beetles- First land animal
• Most animals didn't have backbones
• Life forms were abundant and diverse

HISTORY

• Began 542-488 million years ago
• Began cold then parts grew warmer
• Explosion of live forms- mostly in water
• Cambrian came from Roman name- Cambria

HISTORY CONTINUED...

• Established by Adam Sedgwick
• Discoveries were based off radiometric dating
• Part of the Paleozoic era
• Most plants & animals died out near the end

CONDITIONS OF EARTH

• High sea levels
• Planet reconstruction suggest a global supercontinent
• ⬆️ broke up early in this period
• Polar caps & glaciers

FUN FACTS

• There was a large scale global warming trend
• Shallow, epeiric seas spread over the landscape
• A mass extinction occured 500 million years ago
• No continental landmasses located at the poles
• Many creatures developed hard structure for defense

SOURCES

• Wikipedia
• Personal.dension.edu
• Discovery
• Livescience.com
• Fossils-facts-and-finds.com