Internal morphology of nasal spine of Tsintaosaurus spinorhinus (Ornithischia: Lambeosaurinae) from the upper cretaceous of Shandong, China

ABSTRACTTsintaosaurus spinorhinus is famous for the unique rod-like nasal spine, but there has been a long debate about whether its nasal spine is hollow, since it is difficult to examine the nasal...