Hypacrosaurus altispinus Brown, 1913
Systematics: Dinosauria Ornithischia Ornithopoda Hadrosauridae Lambeosaurini
Size: 9 m long
Type Horizon and Locality: Late Cretaceous, Horseshoe Canyon Formation, Edmonton Group (Maastrichtian), Alberta, Canada
Type Specimen: AMNH 5206, vertebrae and partial pelvis
This duck-billed dinosaur characterized by its rounded hollow crest, was similar to the better known Corythosaurus.
February 10, 2019
References:
Evans, D. C. (2010). Cranial anatomy and systematics of Hypacrosaurus altispinus, and a comparative analysis of skull growth in lambeosaurine hadrosaurids (Dinosauria: Ornithischia). Zoological Journal of the Linnean Society, 159(2), 398-434.
Horner, J. R., & Currie, P. J. (1994). Embryonic and neonatal morphology and ontogeny of a new species of Hypacrosaurus (Ornithischia, Lambeosauridae) from Montana and Alberta. In Dinosaur eggs and babies (p. 313).
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