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10.2" Hadrosaur (Maiasaura) Vertebra w/ Metal Stand - Montana
This beautiful, 10.2" wide vertebra was collected from the Late Cretaceous-aged Two Medicine Formation in Montana. It comes from the Hadrosaur, Maiasaura peeblesorum. The bone is in excellent condition, featuring nice cortical bone preservation and two natural transverse processes. It sits nicely on the custom metal display stand.
There is a repaired crack through the centrum and repaired cracks through each transverse process, all of which required some gap fill restoration. Both pedicles required crack repair and gap fill restoration as well. The spinous process is broken at the base and wasn't recovered. The rock has been removed from the neural canal.
There is a repaired crack through the centrum and repaired cracks through each transverse process, all of which required some gap fill restoration. Both pedicles required crack repair and gap fill restoration as well. The spinous process is broken at the base and wasn't recovered. The rock has been removed from the neural canal.
Maiasaura, meaning "good mother reptile" or "good mother lizard", is a large herbivorous hadrosaur ("duck-billed") dinosaur that lived in what is now Montana in the Upper Cretaceous Period, about 76 million years ago. The first Maiasaura fossils were discovered in 1978. The name refers to the find of nests with eggs, embryos, and young animals in a nesting colony. This find revealed that Maiasaura fed its young while they were in the nest, the first time such evidence was obtained for a dinosaur. Maiasaura reached lengths of around 30 feet long, making it a fairly large Hadrosaur. Young animals walked on their hind legs, while adults walked on all fours.
Maiasaura peeblesorum, a hadrosaur from the Late cretaceous of Montana. By Nobu Tamura (http://spinops.blogspot.com) Creative Commons License
Maiasaura peeblesorum, a hadrosaur from the Late cretaceous of Montana. By Nobu Tamura (http://spinops.blogspot.com) Creative Commons License
About The Two Medicine Formation
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.
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.
SPECIES
Maiasaura peeblesorum
LOCATION
Montana
FORMATION
Two Medicine Formation
SIZE
Vertebra: 10.2 x 6.7 x 3.2", Height on stand: 7.1" tall
CATEGORY
SUB CATEGORY
ITEM
#227770
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