This is a large wonderful skull spike from the infamous American Dome Headed dinosaur Pachycephalosaurus from the equally infamous Hell Creek Formation in Montana, USA! These strange herbivores, nearly 15 feet long and one thousand pounds, roamed North America from 70 to 65 million years ago. They fed on soft leaves, seeds, and fruit, slicing them up with their (surprisingly) small leaf-shaped serrated teeth. Their most striking feature being the large dome on their skull, up to 9 inches thick! The exact purpose of this dome has been debated for decades. The most well know theory is that the animals used their domes in "headbutting contests" similar to modern bighorn sheep. The domes were very ornate, being surrounded by boney knobs and spikes like this specimen! The spike measures 2.52 x 1.22 x 1.14 inches (6.4 x 3.1 x 2.9 cm) with zero repair or restoration! The most striking feature is the mottled texture and a deep groove indicating the piece was bitten, swallowed, and digested by a carnivorous dinosaur! The bite mark's width matches a medium size theropod tooth, pictures provided show a large Nanotyrannus tooth fitting nicely in the notch! Other likely candidates are the giant Dromaeosaur Dakotaraptor, and even a juvenile T-Rex! Pachycephalosaurus fossils are already extremely rare, so to find a specimen that shows the interaction between it and other dinosaurs is really something special! A fantastic and unique piece from a bizarre, iconic, and surprisingly rare dinosaur worthy of any fossil collection! It comes labeled and framed in a 6.25 x 4.25 x .75 inch Riker Mount for east transport and display!
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Species: Pachycephalosaurus wyomingensis
Bite Mark Species: Medium size Theropod, Nanotyrannus lancensis, Dakotaraptor Steini, Juvenile Tyrannosaurus rex.
Size: 2.52 x 1.22 x 1.14 inches (6.4 x 3.1 x 2.9 cm)
Found: Powder River County, Montana, USA
Formation: Hell Creek Formation
Age: 68-66 million years old
Repair: None