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Front Range
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===Lyons Sandstone=== At 280 million years ago, sea levels were low and present-day Colorado was part of the super-continent [[Pangaea]]. Sand deserts covered most of the area, spreading as dunes seen in the rock record, known today as the [[Lyons Sandstone]]. These dunes appear to be cross-bedded and show various [[fossil]] footprints and leaf imprints in many of the strata making up the section.<ref name="ancientdenvers" /> Uplifted beds of Lyons Sandstone are found along the Front range and form the gateway to the [[Garden of the Gods]].<ref name= WilliamsChronic2014/>
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