A northern occurrence of Hypacrosaurus altispinus (Dinosauria: Hadrosauridae), with discussions on generic monophyly and hypodigm construction

Canadian Journal of Earth Sciences, Volume 63, Issue , Page 1-20, January 2026.While the Late Cretaceous dinosaur faunas of southern and northern Alberta, Canada, are well studied, comparable faunas of central Alberta are more poorly known. Herein is described a new occurrence of the lambeosaurine hadrosaurid Hypacrosaurus altispinus Brown, 1913 from the Horseshoe Canyon Formation in Leduc, Alberta. The skull of this specimen is well preserved, allowing its identification as the northernmost-kno