The silurian
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from or referring to the period of time between about 445 and 420 million years ago, in which fish with jaws (= mouth bones) and some plants and small animals on land first appeared:
The silurian meaning & definition 1 of The silurian.
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the period of time between about 445 and 420 million years ago, in which fish with jaws (= mouth bones) and some plants and small animals on land first appeared:
The silurian meaning & definition 2 of The silurian.
