If an organism's fossil was found in the Mississippian era and a different organism fossil in the Devonian era, which organism would you say roamed the Earth first, the one in the Mississippian or the one in the Devonian? How do you know? Two part question i need the answer as soon as possible its urgent!

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explanation:

chinese civil war took place over a long period of time between 1927 and 1950. the war was interrupted when japan invaded china in 1936 and by world war ii. the war was fought between the nationalist government of china, also called the kuomintang (kmt), and the communist party of china (cpc).