Crocodilians of the Hell Creek Formation

Step into the swamps and river deltas of the Late Cretaceous with this authentic fossil collection featuring the ancient crocodilians of the Hell Creek Formation. These fossils come from species such as Brachychampsa and Borealosuchus—powerful ambush predators that lived alongside Tyrannosaurus rex and Triceratops in the final age of the dinosaurs.

Each specimen in this set represents a different part of these ancient reptiles’ anatomy:

1 conical tooth used for gripping prey

1 crushing tooth for eating mollusks, crustaceans, and insects 

1 skull fragment

1 vertebrae fragment 

1 Osteoderm fragment (bony armor plates) that protected them like natural shields

Collected from the Hell Creek Formation of North Dakota, these fossils are securely displayed in a labeled Riker box, making them perfect for collectors, educators, and anyone fascinated by the predators that ruled the waterways 66 million years ago.

Details:

Species: Brachychampsa / Borealosuchus

Age: Late Cretaceous (~66 MYA)

Formation: Hell Creek Formation

Location: North Dakota, USA

Specimens: 2 Teeth, skull fragment, vertebra, and osteoderm