SOLD! Extremely Rare Pachycephalosaurus Skull Spike Hell Creek Formation
This listing is for a spike off a Pachycephalosaurid dinosaur. These fossils are becoming exceedingly rare. Based on the shape and size it is likely from an adult Pachycephalosaurus but could possibly be from something like Stygimoloch (possible juvenile Pachycephalosaurus).
The fossil measures 1.25" across at its widest point.
Thisfossil comes with its own COA upon request. Just text or email me to ask a question, my contact info is on the bottom of the page!
The Hell Creek Formation dates back to the Late Cretaceous approximately 66-68 million years in age found in Perkins County, SD. It represent the coastline of an ancient sea that spanned across the middle of North American during much of the Mesozoic Era. That is why dinosaur remains are so common in the American West, those areas were the ancient floodplains of a seaway that no longer exists. Dinosaur like the famous Tyrannosaurus Rex, Triceratops and Pachycephalosaurus were part of this amazing ecosystem. Other dinosaur such as Edmontosaurus, Thescelosaurus, Struthiomimus and Oviraptorids existed here as well. And of course there were the Dromaeosaurs "Raptors) that inhabited this area and preyed upon these species such as Acheropraptor and Dakotaraptor.