mammals are evolved from reptiles and amphibians from fish
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Explanation:
Amphibians, reptiles, mammals, and birds evolved after fish.
The first amphibians evolved from a lobe-finned fish ancestor about 365 million years ago. ...
The first reptiles evolved from an amphibian ancestor at least 300 million years ago. ...
Mammals and birds both evolved from reptile-like ancestors.
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The earliest amphibians evolved in the Devonian period from sarcopterygian fish with lungs and bony-limbed fins, features that were helpful in adapting to dry land. They diversified and became dominant during the Carboniferous and Permian periods, but were later displaced by reptiles and other vertebrates.
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