Lockley, M.G. & Lucas, S.G., eds., 2014, Fossil footprints of western North America: NMMNHS BulletinNOTES ON A NEW ANKYLOSAUR TRACK FROM THE DAKOTA GROUP (CRETACEOUS) OF NORTHERN COLORADO

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• Stratigraphy
• Dakota Formation
• Geology of Iowa
• Geology of Kansas
• Geology of Minnesota
• Plainview Formation
• South Platte Formation
• Ichnite
• Blackhawk Formation
• Geology
• Paleontology
• Trace fossils