6.7" Fossil Hadrosaur (Maiasaura?) Jaw Section - Montana

This is a nice, 6.7" wide fossil hadrosaur (Maiasaura sp.?) jaw (dentary) section from the Two Medicine Formation of Pondera County, Montana. There is a crack repair along one edge of this specimen and the ridges that would have separated each tooth have undergone some restoration.

Comes with the pictured custom metal display stand.

Hadrosaurs are frequently referred to as duck-billed dinosaurs and are members of the Ornithischian family Hadrosauridae. They were fairly common herbivores which roamed Asia, Europe, and North America during the Upper Cretaceous Period. Many species of Hadrosaurs had distinctive crests on their heads, some of which had air-filled chambers that may have produced a distinct sound. These crests may have been used for both audio and visual display purposes.

The Two Medicine Formation is a geographical formation in Central Montana and Southern Alberta, Canada. The formation is predominantly sandstone laid down by rivers and deltas during the Campanian Age of the Cretaceous about 80-75 million years ago. Approximately two thousand feet thick on the western edge, it lies on top of the Virgelle Sandstone formation and under the Bearpaw Shale. It is located between the Front Range of the Rocky Mountains and the Sweetgrass Arch, a tectonic fold feature 40-90 miles east of the Front Range.

The Two Medicine is the same age as the Judith River Formation found further east. It was laid down further inland from the Western Interior Seaway, while the Judith River Formation was deposited along the coast. The Two Medicine contains much of the same dinosaur fauna, but fewer reptiles, amphibians and aquatic fossils.

A view of the Two Medicine Formation quarry operated by Northwest Montana Fossils where much of our Two Medicine dinosaur material has been found.
A view of the Two Medicine Formation quarry operated by Northwest Montana Fossils where much of our Two Medicine dinosaur material has been found.
FOR SALE
$495
DETAILS
SPECIES
Maiasaura sp.?
LOCATION
Pondera County, Montana
FORMATION
Two Medicine Formation
SIZE
6.7 x 3.1"
CATEGORY
SUB CATEGORY
ITEM
#173489
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