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31.3" Hadrosaur (Hypacrosaurus) Tibia with Metal Stand - Montana
This is an amazing and massive, 31.3" long Hadrosaur (Hypacrosaurus sp) tibia bone from the right leg, collected from the Two Medicine Formation of Montana. It was collected this last summer and has been nicely prepared from the hard rock surrounding it.
The diaphysis of this bone was found heavily fragmented, requiring gap fill restoration and crack repair to piece back together. The proximal end (articulates with femur) is in great shape, with weathering of the bone along the points of articulation and very minor crack stabilization. The distal end however has gap fill restoration and repair, along with significant restoration to the anterior edge.
Limb bones can look very similar between hadrosaurs, however based on size and site of collection, it's extremely likely that this is from the lambeosaurine hadrosaur, Hypacrosaurus. Comes with the pictured custom metal display stand.
Measurments:
Length: 31.3" long
Proximal end: 7.5" wide
Distal end: 6.2" wide
On metal stand - 32.7" tall
The diaphysis of this bone was found heavily fragmented, requiring gap fill restoration and crack repair to piece back together. The proximal end (articulates with femur) is in great shape, with weathering of the bone along the points of articulation and very minor crack stabilization. The distal end however has gap fill restoration and repair, along with significant restoration to the anterior edge.
Limb bones can look very similar between hadrosaurs, however based on size and site of collection, it's extremely likely that this is from the lambeosaurine hadrosaur, Hypacrosaurus. Comes with the pictured custom metal display stand.
Measurments:
Length: 31.3" long
Proximal end: 7.5" wide
Distal end: 6.2" wide
On metal stand - 32.7" tall
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.
SPECIES
Hypacrosaurus
LOCATION
Pondera County, Montana
FORMATION
Two Medicine Formation
SIZE
Length: 31.3", Proximal end: 7.5" wide, Distal end: 6.2" wide
CATEGORY
SUB CATEGORY
ITEM
#193034
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