人生最好的一段回忆。

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Trace Fossils

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                                                                        Rosellia This picture is taken in summer 2011 at the highway 24 road cut of  Ferron Sandstone at Steamboat. Rosellia is commonly cylindrical, inclined burrow with an funnel shape opening. It is considered to be associated with proximal Cruziana ichnofacies.                                                    ...
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Dinosaur Bones in situ

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The dinosaur bones are discovered in a stacked channel belt in Morrison formation Jurassic. It is believed that the bones were rolling at the bottom of the channel due to higher density than water in a direction perpendicular to the flow.
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