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Marmarth Research Foundation: In the Hell Creek Formation of North Dakota

Marmarth Research Foundation: In the Hell Creek formation of North Dakota

Prenocephale skull , 2006
Hell Creek Formation

Prenocephale skull
<em>Triceratops</em> squamosal

Triceratops squamosal
Homer
2005

It's one frill after another!

Norman Gardiner
Retired English Professor

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