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Hadrosaur (Hypacrosaurus) Vertebrae with Stand - Montana
This is an impressive pair of hadrosaur (Hypacrosaurus sp.) vertebrae from the Two Medicine Formation of Montana. They were collected this last summer and have been exposed from the rock they were found in, with a section of rock remaining to hold the two together.
The entire specimen measures 11.7" long by 6.8" wide, with the dorsal vertebra measuring 7.8" tall. It sits nicely on the accompanied custom metal display stand.
The upper dorsal vertebra has undergone some gap fill restoration, primarily superior to the centrum where the vertebral arch was disarticulated. Both transverse processes and the spinous process were missing upon collection. The lower vertebra consists only of the centrum and may represent an adjacent vertebra from the same animal. There are several repaired cracks with gap fill restoration through this vertebra as well.
The entire specimen measures 11.7" long by 6.8" wide, with the dorsal vertebra measuring 7.8" tall. It sits nicely on the accompanied custom metal display stand.
The upper dorsal vertebra has undergone some gap fill restoration, primarily superior to the centrum where the vertebral arch was disarticulated. Both transverse processes and the spinous process were missing upon collection. The lower vertebra consists only of the centrum and may represent an adjacent vertebra from the same animal. There are several repaired cracks with gap fill restoration through this vertebra as well.
About Hypacrosaurus
Hypacrosaurus is a very large, Lambeosaurini Hadrsosaur that would have been almost as large as the Tyrannosaurs that it lived alongside. Like Corythosaurus, it had a tall, hollow, rounded crest, although not as large and straight. It is known from the remains of two species that spanned 75 to 67 million years ago in the Late Cretaceous of Alberta, Canada, and Montana, United States, and is the latest hollow-crested duckbill known from good remains in North America. It is estimated to have been around 9.1 meters (30 feet) long and to have weighed up to 4-5 tons.
Hypacrosaurus drawing by Wikipedia user debivort. Creative Commons License
Hypacrosaurus is a very large, Lambeosaurini Hadrsosaur that would have been almost as large as the Tyrannosaurs that it lived alongside. Like Corythosaurus, it had a tall, hollow, rounded crest, although not as large and straight. It is known from the remains of two species that spanned 75 to 67 million years ago in the Late Cretaceous of Alberta, Canada, and Montana, United States, and is the latest hollow-crested duckbill known from good remains in North America. It is estimated to have been around 9.1 meters (30 feet) long and to have weighed up to 4-5 tons.
Hypacrosaurus drawing by Wikipedia user debivort. 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.
$2,500
SPECIES
Hypacrosaurus sp.
LOCATION
Pondera County, Montana
FORMATION
Two Medicine Formation
SIZE
Entire Specimen: 11.7 x 6.8 x 4", Height on stand: 12.6" tall
CATEGORY
SUB CATEGORY
ITEM
#384752
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