Chart

ERA YEARS PLANTS & ANIMALS LAND FORMS CLIMATE

Precambrian
4.5 billion -

570 million
Microscopic Life: Algae, Fungi, Bacteria formation and cooling of the earth. The great seas formed. Hot. Lots of rain The hot early atmosphere is full of Carbon Dioxide, Nitrogen, Water.

Paleozoic
570 million -

225 million
Trilobites, Jellyfish, Sponges, Worms, Amphibians, Reptiles Appalachian Mountains were formed. Laurasia and Godwana became Pangea. Colder and dryer.

Mesozoic
225 million -

65 million
Dinosaurs, Birds, Flowering Plants, Primitive Mammals Pangea broke apart into the continents.The Sierra Nevada and Rocky Mountains were formed. Much warmer than today.

Cenozoic
65 million -

Present
Mammals, Elephants, Insects, Flowers, Humans Greenland brakes off of North America. India collided with Asia. The Alps, Andes and Himalayan Mountains formed. The earth cooled to the climate we have today.

ERA	YEARS	PLANTS & ANIMALS	LAND FORMS	CLIMATE
Precambrian	4.5 billion - 570 million	Microscopic Life: Algae, Fungi, Bacteria	formation and cooling of the earth. The great seas formed.	Hot. Lots of rain The hot early atmosphere is full of Carbon Dioxide, Nitrogen, Water.
Paleozoic	570 million - 225 million	Trilobites, Jellyfish, Sponges, Worms, Amphibians, Reptiles	Appalachian Mountains were formed. Laurasia and Godwana became Pangea.	Colder and dryer.
Mesozoic	225 million - 65 million	Dinosaurs, Birds, Flowering Plants, Primitive Mammals	Pangea broke apart into the continents.The Sierra Nevada and Rocky Mountains were formed.	Much warmer than today.
Cenozoic	65 million - Present	Mammals, Elephants, Insects, Flowers, Humans	Greenland brakes off of North America. India collided with Asia. The Alps, Andes and Himalayan Mountains formed.	The earth cooled to the climate we have today.