Crocodilian Fossil Set A in Riker Box — Brachychampsa & Borealosuchus, Hell Creek Formation, North Dakota (5 Pieces, 66 MYA)

Own a real set of crocodilian fossils from the Hell Creek Formation of North Dakota. This collection of five authentic fossils comes from Brachychampsa and Borealosuchus, powerful ambush predators that lived alongside Tyrannosaurus rex and Triceratops in the final age of the dinosaurs, about 66 million years ago.

Each set is unique. The fossils are natural, so the exact pieces vary from set to set.

Each set includes a different part of these ancient reptiles' anatomy:

• 1 conical tooth for gripping prey
• 1 crushing tooth for eating mollusks, crustaceans and insects
• 1 skull fragment
• 1 vertebra fragment
• 1 osteoderm fragment (bony armor plate) that protected them like natural shields

The swamps and river deltas of the Late Cretaceous were home to these crocodilians. Your set comes displayed in a labeled Riker box, making it a great gift for fossil collectors, dinosaur lovers, kids, teachers and anyone fascinated by the predators that ruled the waterways.

Specimen Details

• Species: Brachychampsa / Borealosuchus
• Specimens: 2 teeth, skull fragment, vertebra fragment and osteoderm (5 pieces)
• Age: Late Cretaceous (~66 million years ago)
• Formation: Hell Creek Formation
• Location: North Dakota, USA
• Displayed in a labeled Riker box
• Ethically collected on private land with the landowner's permission and under the oversight of an academic team

Frequently Asked Questions

What is in this fossil set?
Five real crocodilian fossils: a conical tooth, a crushing tooth, a skull fragment, a vertebra fragment and an osteoderm (armor plate).

Are these real fossils?
Yes. They are genuine fossils from the Hell Creek Formation of North Dakota, not casts or replicas.

What animals are they from?
Brachychampsa and Borealosuchus, crocodilians that lived in the rivers and swamps of the Late Cretaceous alongside T. rex and Triceratops.

How old are they?
About 66 million years old, from the very end of the Cretaceous, just before the dinosaurs went extinct.

Where were they found?
In the Hell Creek Formation of North Dakota, on private land with the landowner's permission and under the oversight of an academic team.