Rocky Mountain Minerals and Fossils
Hadrosaur Dentary (dinosaur jaw), Drumheller area, Alberta (disposition #001590)
Hadrosaur Dentary (dinosaur jaw), Drumheller area, Alberta (disposition #001590)
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A substantial hadrosaur dentary from the Horseshoe Canyon Formation near Drumheller, Alberta. Hadrosaurs, commonly known as duck-billed dinosaurs, possessed highly specialized jaws containing tightly packed groups of teeth in dental batteries. Teeth would have occupied the prominent grooves or slots, across this 28 cm long specimen. Successive replacement teeth maintained a working surface for processing plant material as older teeth wore down. It is believed large adults may have had as many as 1800 teeth in the skull but with only 450 functioning at one time; the remainder growing underneath the active teeth ready to replace them once worn out. Their jaws formed an essential part of this remarkable feeding system, with the upper and lower jaws working together to shear edible plant material.
From the Harvey Negrich Collection, this specimen offers a tangible connection to that anatomy. Its substantial size, visible structural detail, and collection provenance make it an engaging display piece for collectors interested in Alberta’s dinosaurs. This specimen has been repaired but not restored (coloured or patched) in any manner.
Legal Status: This specimen is legally available for private ownership and resale under Alberta Disposition Certificate #001590. A copy of the disposition documentation will accompany the specimen. Learn more about Alberta fossils and the disposition process.
Family: Hadrosauridae indet. (hadrosaur; exact species undetermined, but possibly Edmontosaurus)
Age: Late Cretaceous (Campanian to early Maastrichtian or 68-73.1 million years ago)
Formation: Horseshoe Canyon Formation (Edmonton Group)
Locality: Red Deer River valley, Drumheller area, Alberta, Canada
Dimensions: 28 × 8 cm
Provenance: Harvey Negrich Collection
Alberta Disposition Certificate Number: 001590 (specimen #HN634) issued July 7, 2026
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The Exact Specimen Pictured
The specimen shown in the photographs is the exact specimen you will receive.
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Carefully Packed for Collectors
Each specimen is carefully and securely packed to help protect it during shipment.
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Shipping & Local Pickup
We ship to Canada and the United States. Other destinations may be available by arrangement—contact us before ordering. Calgary pickup by appointment.