The Silurian Hypothesis
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Did an ancient race of reptiles once build a civilization as advanced as our own on earth hundreds of millions of years ago. And more importantly: how we would we even know if they had?
The Silurian World
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Did an ancient race of reptiles once build a civilization as advanced as our own on earth hundreds of millions of years ago. And more importantly: how we would we even know if they had?
The Silurian World