4,600 mya: Earth forms --> 545 mya: hard shell mollusks appear --> ~360mya: Pangaea was created --> 300 mya: Earliest reptiles --> 248 mya: mass extinction --> 240 mya: dinosaurs appear --> ~225 mya: Pangaea breaks up --> 200 mya: mammals appear --> 150 mya: birds start to fly --> 65 mya: dinosaurs go extinct --> 1.8 mya: Ice age --> 190,000 years ago: first humans
In this activity, I learned about the history of the Earth and the organisms that inhabit it. The Earth is 4,600 million years old. There were many animals in the past that evolved into the animals that live today. I learned this by looking at a timeline of the events on Earth millions of years ago.
Rating: 10/10. It was informative and there were nice pictures.
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