Put the following Earth events in order, with the OLDEST event FIRST 1.) Extinct

Question

Put the following Earth events in order, with the OLDEST event FIRST 1.) Extinction of the dinosaurs 2.) Formation of large coal deposits in North America 3.) Laramide Orogeny formed the structure of the present Rocky Mountains 4.) First appearance of stromatolites (produced by mats of cyanobacteria) in the rock record 5.) Final assembly of Pangea and final development of the Appalachian Mountains 6.) Ice sheets covered portions of the Northern Hemisphere and woolly mammoths roamed the land 7.) Opening of the North Atlantic Ocean 8.) Largest mass extinction in Earth history 9.) First appearance of shelled organisms in the fossil record 10.) First appearance of mammals in the fossil record

Explanation / Answer

Earth's events in the order they happened

4.) First appearance of stromatolites (produced by mats of cyanobacteria) in the rock record

9.) First appearance of shelled organisms in the fossil record

2.) Formation of large coal deposits in North America

5.) Final assembly of Pangea and final development of the Appalachian Mountains

8.) Largest mass extinction in Earth history

10.) First appearance of mammals in the fossil record

7.) Opening of the North Atlantic Ocean

1.) Extinction of the dinosaurs

3.) Laramide Orogeny formed the structure of the present Rocky Mountains

6.) Ice sheets covered portions of the Northern Hemisphere and woolly mammoths roamed the land

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