- Upper Cretaceous
- Hell Creek Formation
- Harding County, South Dakota
- This SCARCE Specimen measures approx. 3/16″ long and will come in the 1.25″ Gem Jar as Shown
Stygimoloch was a small pachycephalosaur that lived in the late Cretaceous, 66 million years ago, appearing several thousand years before the KT impact. The only present species is Stygimoloch spinifer.
Stygimoloch looked similar to Pachycephalosaurus except that it had horn-like projections sticking out of it’s skull. It probably fed on tough plant matter and battled by ramming into each other.
This dinosaur measured about 10 feet long and bore a thick skull that was decorated with six large spikes that covered the top rim of its head. This may have served the dinosaur as a display of recognition, helping the dinosaur to identify its companions. It was a plant-eater and it lived in herds for protection from predators such as Tyrannosaurus, Dromaeosaurus, and Gorgosaurus. Males would often challenge one another to battle, either for females with which to mate, or for supremacy in the herd.It was previously thought that, like goats, they would butt heads with each other until one weakened and backed off, leaving the victor to choose a female or to lead a herd.