US and Canadian Western Interior under construction: October 15, 2004
The dawn of the Tertiary? This hadrosaur lower jaw is on display now at the Artis Geologisch museum, Amsterdam, but here it is as I found it in the Bug Creek valley, little north of Lonnie's bench, exposed some 15 m below the K/T boundary in the "gumbo" overbank deposits of the Hell Creek formation.
Coals in the Hell Creek area of Fort Peck reservoir badlands "Missouri breaks" Montana



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