5" Pachycephalosaurus Dome Spikes - Very Rare Find!

This is a very cool, piece collected recently in South Dakota. It is a pair of well preserved dome spikes from Pachycephhlosaurus. Pachycephhlosaurus had a very thick dome atop their skull which was fringed with spikes.

There are two spikes present the larger one measure 2 3/4" long and the smaller 2 1/2" long. The only restoration is some very thin gap fills in the repaired cracks. This is a phenomenal piece, and something like this doesn't come onto the market vey often.

Pachycephalosaurus was a bipedal dinosaur that lived during the Late Cretaceous period and probably was about 15 feet in length.

Pachycephalosaurus had a distinctive, large, bony, dome on top of it's skull up to 10 inches thick to cushion it's brain from impacts.

Some paleontologists believe this thick skull may have been used for head-butting, much like rams while others contend it may have been a sexual display.

It was one of the last non-avian dinosaurs before the K-T extinction event, 65 million years ago.

There is only one known species of Pachycephalosaurus, Pachycephalosaurus wyomingensis. It's remains have been found in Montana, South Dakota and Wyoming.

It was either a herbivore or an omnivore with small leaf shaped teeth which would have been very effective at shredding plants.