fish the devonian age |
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| navigate by keyword : pattern textile design line art brown circle flooring drawing font sketch symmetry floor black monochrome text net fish devonian age geologic period system paleozoic spanning million years silurian beginning carboniferous mya named devon england rocks studied called fishes characterised rapid diversification earliest fossil record date jawless armoured heavy bony plates |
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| The Devonian is a geologic period and system of the Paleozoic spanning 60 million years from the end of the Silurian 419.2 million years ago to the beginning of the Carboniferous 358.9 Mya. It is named after Devon England where rocks from this period were first studied. Often called the ââ¬ÅAge of the Fishesââ¬Â the Devonian period was characterised by a rapid diversification in fish. The earliest fish in the fossil record date from the 542 ââ¬â 485 million years ago. These were jawless fish many of which were armoured with heavy bony plates. |
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