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The ______ were the first truly terrestrial vertebrates.

1.Amphibians
2.Mammals
3.Dinosaurs
4.Amniotes

2 Answers

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amniotes
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User Ronak Patel
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The amphibians were the truly terrestrial vertebrates. They are often described as fish with legs who eventually became reptiles. The reason for this evolution can be credited to the evolution of plans from a group of green algae called the Cambrian Explosion.
User Joente
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