How to Pronounce "devonian"
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Definition
The Devonian is a period in Earth's history, about 419 to 359 million years ago, known for the development of early fish and the first land plants.
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The Devonian period came after the Silurian period.
Many fish species appeared during the Devonian.
Fossils from the Devonian have been found in this area.
Those cliffs are made of Devonian limestone, which is over 350 million years old.