Hypacrosaurus altispinus Brown, 1913

Remarks

• Collection:    Lee Garrison
• Formation:   Montana Group, Two Medicine Formation
• Location:      Montana

General Info

Synonyms (older names and misidentifications)

• 1913 Hypacrosaurus altispinus Brown
• 1917 Cheneosaurus tolmanensis Lambe
• 1978 Hypacrosaurus altispinus Brown; Morris
• 1981 Hypacrosaurus altispinus Brown; Weishampel
• 1990 Hypacrosaurus altispinus Brown; Weishampel & Horner
• 1994 Hypacrosaurus altispinus Brown; Carpenter & Currie

Stratigraphic Occurrence

• Montana Group, Two Medicine Formation of Montana
• Edmonton Group, Horseshoe Canyon Formation

Age

• Hypacrosaurus altispinus Brown is a latest Campanian–Earliest Maastrichtian Dinosaur (~71 mya).

Geographic Occurrence (not an all-inclusive list)

• Alberta, Canada
• Pondera County, MT

Remarks

       For identification and descriptions, see:

• Brown, B.  1913.  A New Trachodont Dinosaur, Hypacrosaurus, from the Edmonton Cretaceous of Alberta.  American Museum of Natural History Bulletin 32, 395–406.
• Weishampel, D. B.; Horner, J. R.  1990.  "Hadrosauridae".  In:  Weishampel, D. B.; Dodson, P.; Osmólska, H., ed's.  The Dinosauria.  Berkeley:  University of California Press.  Chapter 26, 534–563, fig's 26.7b and 26.9a.