STONEFLIES TALIA
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Rayonnoceras solidiforme, 75 mm long, Fayetteville Shale, Mississippian, Arkansas, USA
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The Landslide, from Narrow Neck
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Shale and slate like sediment, from 200 million years ago, now at 2000 meters elev.
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Sketch of complete Tullymonstrum gregarium. Francis Creek Shale, Pit 11, Peabody Coal Mine, Braidwood, Illinois.
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