Researchers have gained new insights into the life and evolution of Stegosaurs, thanks to the finding and analysis of a well-preserved skull. The skull,belonging to a Dacentrurus Armatus,one of the largest known Stegosaurs,dates back approximately 150 million years to the late Jurassic period. The find included various other bones and rare petrified remains of young animals, contributing to a more detailed understanding of the dinosaur’s head structure.

Apex Anatomy and Biting Force

Initial analysis of the skull fragments suggests that Dacentrurus Armatus possessed a surprisingly pronounced apex – a bony ridge on the skull. According to researchers, this feature likely served as an anchor point for powerful skull muscles, enabling a stronger bite and more efficient processing of food.

“Therefore,the presence of a crop of the apex could have made it possible to chew over longer periods,wich would be especially favorable when eating tough food with little nutritional value,” write Sánchez-Follosa and Cobos. “In this case, however, the apex comb is relatively small, and detailed functional studies are required to confirm this hypothesis.”

“Therefore, the presence of a crop of the apex could have made it possible to chew over longer periods…”

Redefining Stegosaur Taxonomy

The discovery has prompted a re-evaluation of Stegosaur evolutionary relationships. Paleontologists Sánchez-follosa and Cobos propose a new subgroup within the Stegosaurs, termed “Neostegosaurs.”

“Neostegosaurs are late Divergent Stegosaurs medium to large size that,at least in the middle and late Jura in Africa and europe,lived in the late Jura in North America and in the late Jura and early chalk age in asia,” the paleontologists define their new division. Anatomically, Neostegosaurs are characterized by extended transverse processes on their front and mid-sized tail vertebrae.

Stegosaur timeline Reconstructed

The findings contribute to a clearer picture of Stegosaur evolution. “The chronogram created in this study and the available evidence support the assumption that Stegosaurs first appeared in the early law, quickly diversified in the middle law, at least became meaningful components of the ecosystems and declined in the early chalk age,” write Sánchez-Follosa and Cobos.