Pachycephalosaurus Dome Fragment Size:Small Above: Artist's reconstruction of Chicxulub

Above: Artist's reconstruction of Chicxulub crater soon after impact

000 square miles)

There are two sizes available

We know of this incredible time thanks to the fossil imprints left behind by plants that were preserved for millions of years

50" nodule of Fairburn Agate from the Minnelusa Formation in South Dakota

Pachycephalosaurus Dome Fragment Size:Small Above: Artist's reconstruction of ChicxulubPachycephalosaurus was a Late Cretaceous dinosaur with a unique feature: its skull had a battering ram like bone plate. This several inch thick helmet of bone allowed it to absorb blunt force when it struck its head against surfaces. This specimen is a piece of a Pachycephalosaurus skull dome fossil recovered from the Hell Creek formation in South Dakota. It's estimated to be over 66,000,000 years old. Both small and medium sized fragments are