 Switching at General Shale
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 Ancient Layers
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 Formations in the shale along the Missing Link of the Foothills Parkway
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 Coastal Bluffs, Shale Cliffs, and Sandy Beach
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 Dithyrocaris, a complete 7 cm phyllocarid. Heath Shale Formation. Bear Gulch Limestone. Bear Gulch, Fergus County, Montana, USA.
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