Name/Title
Fossilized Dinosaur Bone Fragment (Triceratops horridus)Description
Fossilized Dinosaur Bone Fragment (Triceratops horridus)
Triceratops horridus
Late Cretaceous (ca. 68–66 million years ago)
Hell Creek Formation
Montana, United States
This specimen is a fossilized fragment of dinosaur bone attributed to Triceratops horridus, one of the most iconic herbivorous dinosaurs of the Late Cretaceous. Triceratops was a large ceratopsian characterized by its three facial horns, massive skull frill, and robust body adapted for a plant-based diet in floodplain and coastal environments.
The bone fragment displays a dense, mineralized texture with visible surface weathering and subtle internal structure typical of fossilized cortical bone. Although incomplete and not diagnostic to a specific skeletal element, such fragments are common in the Hell Creek Formation and are scientifically valuable for documenting the abundance, distribution, and taphonomic history of large dinosaurs in this ecosystem.
The Hell Creek Formation represents one of the most intensively studied terrestrial deposits in the world, preserving the final chapter of non-avian dinosaur life in North America. Deposited in river channels, floodplains, and swamps, it records a dynamic landscape inhabited by Triceratops, Tyrannosaurus rex, hadrosaurs, crocodilians, and early mammals shortly before the end-Cretaceous mass extinction.
As a representative body fossil rather than a display-oriented skeletal element, this specimen underscores how fragmentary remains form the backbone of paleontological knowledge. It offers a direct material connection to one of the last dinosaur communities on Earth and to the geological processes that carried their remains across deep time.
Dimensions: 3.35 × 1.90 × 1.41 inches (8.52 × 4.83 × 3.59 cm)Create Date
August 3, 2025Update Date
December 20, 2025