Primitive Fish,Trilobites,Orthocones and Horseshoe crabs lived
in the silurian
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Fossils from the Silurian Period are between 443.7 and 416
million years old.
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Carboniferous
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The Silurian period spans from 443 to 419 million years ago. The
earliest dinosaurs evolved 231 million years ago. That means there
were no dinosaurs at all during the Silurian.