PERMIAN TIME

PALEOZOIC ERA

• It started 542 million years ago and ended 250 million years ago
• There are six periods in the Paleozoic Era
• The periods are Cambrain, Ordovician, Silurian, Devonian, Carboniferous, and Perminan

PERMIAN PERIOD

• Named in 1841 by Murchison
• Started 299 million years ago
• Ended 250 million years ago

THE LAND

• Pangaea(a big connected land)
• Panthalassa Ocean(one large ocean)

THE CLIMATE

• Ice age
• Swampy
• Desert
• Wet and dry season

ANIMALS AND PLANTS

Odonata

Cockroachs

Brachiopods

Orthacanthus

Coral Reef

Dimetrodon

Moschops

Nautilus

Trilobite

Dogbane
Leaf
Beetles

ABOUT THE EXTINCTION

• The largest extinction(The Great Dying)
• Many theories
• 90-95% marine life died
• 70% land mammals died
• This extinction occurred 251.4 million years ago

THEORIES OF EXTINCTION

Impact- A asteroid or comet would have hit the ocean which was 70% of the earth’s body.

Volcanism- that the earth underwent a series of massive volcanic events. These large volcanic events could have led to aerosol event that may have slowly killed the food chain and led to acid rain.

Ocean Anoxia- The ocean circulation stopped which led to a drop in oxygen content in the water and increased in Carbon Dioxide.

Joint Catastrophes- Explains many of the theories. It sums up all of the possibilities and shows how they all may have occurred one after another in a short period of time(few million years.)