(1)
Campbell, J. A.; Ryan, M. J.; Schroder-Adams, C. J.; Holmes, R. B.; Evans, D. C. Temporal Range Extension and Evolution of the Chasmosaurine Ceratopsid ‘Vagaceratops’ Irvinensis (Dinosauria: Ornithischia) in the Upper Cretaceous (Campanian) Dinosaur Park Formation of Alberta. Vert. Anat. Morph. Palaeo. 2019, 7, 83-100.