Era Notes

I'm really proud of the notes I took

Geologic Time Scale-Major Eras

What are the landmark events in each era?

Era:  Write down important information/facts	Paste two important images that represent the era.
Hadean The Moon was formed by collision There was liquid on the surface (Hydrogen and Oxygen Formed the Liquid) It Had Atmosphere! The Atmosphere was Carbon Dioxide and Hydrogen This Era Was Extremely Hot	*
Archean This Era began 3.8 billion years ago Continental Plates began to form Heavy Meteorites Crash.Every Time a meteorite crashed it created an impact crater and it brought things from outer space and that helped build our Earth. The First Life on Earth “Blue Green Algae”(Photosynthesized) First Fossils	*
Proterozoic 2.5 billion years ago Photosynthesis and Respiration More Oxygen Single-celled and multi-celled life Scientist’s think these countries look like this.(Supercontinent Rodinia)	*
Paleozoic 542-251 million years ago Explosion of Complex Life Rainforests on Land Trees First Fish,Vertebrates,Amphibians,Reptiles 96 Percent of  Animals got Extinct 70% of Land Animals got Extinct The Cracks in the ocean   floor  brought in poisonous gases. The land animals drank the water  and  when it rains.	*
Mesozoic Dinosaurs Plates are all together and dinosaurs are there.	*
Cenozoic At the end of the era there were humans All Dinosaurs were gone at the end of era Began 65 million years ago Increase in flower plants and insects crater impact causes dinosaurs to die out.	*