Denver Gem, Mineral, Fossil Show

Denver Gem, Mineral, Fossil Show - Sept 2004

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$Didymoceras stevensoni\nPierre Shale Formation\nLate Cretaceous\nCuster, Co. So. Dakota\n[Mounted on an Inoceramus clam.]$
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Didymoceras stevensoni
Pierre Shale Formation
Late Cretaceous
Custer, Co. So. Dakota
[Mounted on an Inoceramus clam.]