Hadrosaurs
Genuine Hadrosaur Dinosaur Bones
Find the remarkable world of the "duck-billed" dinosaurs with the premium selection of Hadrosaur fossils. The Hadrosaurs are commonly know as the "duck-billed dinosaurs". These large herbivores were both bipedal and quadrapedal and grew to a size of ~40 feet. They lived throughout the Cretaceous period, and believed to live in large groups. Fossil remains include well preserved teeth, bones, and claws. These top quality specimens were all legally collected from private lands in the northwestern US. Late Cretaceous, Hell Creek Fm. (or equivalent), 68-66 MYA.
Edmontosaurus was one of the largest members of the hadrosaur family which lived during the late Cretaceous in North America. These were large dinosaurs which grow up to 50 feet in length and weighed up to 10,000 lbs. Edmontosaurus was a herbivore who had a large bill-like snout that was able to nip and tear vegetation, and their jaws were filled with rows of large teeth used to grind vegetation. They appear to live in herds and they would be prey for Tyrannosaurus rex. Edmontosaurus had little defense when attacked by T. rex. They are believed to good speed for their size and a herd of large adults may have been have been threatening to a T. rex. There are two species of Edmontosaurus. There are two species of Edmontosaurus and in the Hell Creek formation, Edmontosaurus annectens was the species present.
Today, we find fossilized Edmontosaurus annectens teeth, unguals (claws), and non-associated bones in the Hell Creek Formation. Authenticity guaranteed.
The Complex Dental Batteries of Hadrosaurs
Duck-billed hadrosaurs possessed one of the most advanced chewing mechanisms in animal history. Their jaws held stacked columns of interlocking teeth that functioned like a continuous grinding pavement.
As tough pine needles and coarse woody plants wore down the top chewing surface, replacement teeth moved upward to fill the gap. Knowing what makes fossils genuine involves examining these distinct enamel ridges and vertical root tracks preserved along the dentary bone.
Locomotion and Unique Hoof-Like Foot Unguals
Fossilized foot bones reveal how large Edmontosaurus specimens supported their immense mass across floodplains. Young duck-bills ran primarily on their hind legs to escape predators, while mature adults grew heavy enough to shift toward four-legged walking. Their pes unguals developed into broad, flattened hoof cores rather than sharp, curved claws. These blunt bone ends distributed weight efficiently over soft mud deposits in prehistoric river basins.
Contact Buried Treasure Fossils to learn more about adding one of these prehistoric treasures to your display.
Frequently Asked Questions
How fast could a large duck-billed dinosaur move when escaping predators?
Biomechanical models of Edmontosaurus annectens show these heavy herbivores reached sprinting speeds near 28 miles per hour. That rapid acceleration gave herds a vital head start when Tyrannosaurus rex ambushed them along river channels.
Did duck-billed dinosaurs shed their teeth individually like sharks?
They retained hundreds of active and replacement teeth jammed tightly together inside deep jaw sockets. Individual teeth slowly wore away against silica-rich plants, exposing lower replacement crowns without leaving empty gaps along the grinding surface.
What preserved skin features appear on mummified specimens of these herbivores?
Exceptional discoveries show dense pebbled scales along the body, flattened tail frills, and fleshy crest structures atop the skull. At Buried Treasure Fossils, we examine texture patterns on associated matrix to identify authentic tissue impressions.
Why do fossil hoof cores from these plant-eaters look so blunt compared to raptor claws?
Evolution flattened their toe unguals into broad spade shapes to stabilize weight on marshy ground. Unlike sharp predatory talons built for puncturing, these thick bone cores provided traction across wetland environments.
How do paleontologists differentiate juvenile jaw bones from full-grown adult specimens?
Younger jaw sections hold fewer vertical tooth columns and measure significantly smaller in overall length. Adolescent dentary bones also show thinner cortical walls before secondary bone layers thicken during adult growth spurts.
- Edmontosaurus - Toe Bone$350.00
An EXTRA LARGE, High Quality Edmontosaurus annectens toe bone from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. This bone is phalanx 1 or 2 of toe 3 (the center & largest toe). Bone quality is good. Some crack fill. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. An excellent collector's quality Edmontosaurus carpal bone. Authenticity guaranteed. This is a massive toe bone. Larger than a T. rex toe bone Note - This items weighs 1.3 pounds and an international shipping surcharge may be applied to the "free shipping" offer.
DH50 SIZE: 5-5/8" wide x 3-1/4" height
Note - Adding 19 Edmontosaurus bones in May 2026. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$275.00
An EXTRA LARGE, Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed. Maximum size.
DH02 SIZE: 1-3/8"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$250.00
A LARGE, GEM Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH07 SIZE: 1-1/8"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$250.00
A RARE, Top Quality Edmontosaurus annectens rooted tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. Two fine cracks are stabilized. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH06 SIZE: 1-3/8"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$250.00
An EXTRA LARGE, Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed. Maximum size.
DH03 SIZE: 1-3/16"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$225.00
A LARGE, Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Carter Co., Montana. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH05 SIZE: 1-1/8"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus - Cervical Rib$225.00
A Top Quality Edmontosaurus cervical (neck) vertebra from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. A rarely seen neck vertebra. Bone quality is excellent. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. An excellent collector's quality Edmontosaurus bone bed section. Authenticity guaranteed.
DH39c SIZE: 3-7/8" (length) x 2-1/4" (width)
Note - Adding 19 Edmontosaurus bones & claws in May 2026. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$195.00
A LARGE, Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. This specimen resides on its original Hell Creek Fm. matrix. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Authenticity guaranteed.
DH08 SIZE: 1-1/16"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$125.00
A Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm.,Powder River Co., Montana. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH22 SIZE: 1-1/16"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$115.00
A Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm.,Powder River Co., Montana. An excellent collector's quality Edmontosaurus tooth. Perfect tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH23 SIZE: 15/16"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$95.00
A LARGE, Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No repair or restoration. Legally collected on private land in the Hell Creek Fm., Harding Co., So. Dakota. An excellent collector's quality Edmontosaurus tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH09 SIZE: 1-1/8"
Note - Adding 20 new Edmontosaurus fossils in March 2024. Link to Edmontosaurus fossils catalog
Learn More - Edmontosaurus$90.00
A Top Quality Edmontosaurus annectens tooth from the late Cretaceous of North America. Edmontosaurus is a very large hadrosaur or "duck-bill" dinosaur found in the Hell Creek formation. The enamel is excellent quality with excellent color / patina. Excellent preservation showing the intricate texture of the root. No cracks or restoration. Legally collected on private land in the Hell Creek Fm., Powder River Co., Montana. An excellent collector's quality Edmontosaurus tooth. Note - tooth comes with a gem case. Authenticity guaranteed.
DH13 SIZE: 15/16"
Note - Adding 28 new Edmontosaurus fossils in October 2021. Link to Edmontosaurus fossils catalog
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