01/22/2026
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The Dueling Dinosaurs: One of the Greatest Fossils Ever Found—Still Largely Unseen
In 2006, Montana rancher Clayton Phipps, known locally as the “Dino Cowboy,” made one of the most extraordinary fossil discoveries in history in the Hell Creek Formation—a site dating to about 66 million years ago, just before the dinosaurs’ mass extinction.
While excavating what first appeared to be a well-preserved Triceratops horridus, Phipps realized something astonishing: a second dinosaur was buried alongside it. Further digging revealed a theropod carnivore, either a juvenile Tyrannosaurus rex or its debated relative Nanotyrannus. The two skeletons were fully articulated, intertwined, and preserved in combat—now famously known as the Dueling Dinosaurs.
What the Fossils Reveal
The fossils include a 28-foot Triceratops and a 22-foot theropod, both remarkably intact, with traces of skin impressions and possibly soft tissues. Teeth from the carnivore were found embedded near the Triceratops’ spine and pelvis, while the theropod’s skull shows damage consistent with a powerful counter-attack. Scientists believe the dinosaurs died together, likely buried suddenly by sediment during a flood in a swampy floodplain—freezing their final struggle in time.
Why They Matter
Experts, including paleontologists from major museums, have called the specimens scientifically priceless. The theropod could help resolve long-standing debates about whether Nanotyrannus was a separate species or a young T. rex. The fossils also offer rare insight into dinosaur behavior, injuries, and death at the very end of the Cretaceous.
Why Few Have Seen Them
Despite their importance, the Dueling Dinosaurs have remained largely unseen due to long legal disputes over fossil ownership between surface and mineral rights holders. Although the fossils are currently held at an American museum, they have not yet been fully prepared, studied, or displayed publicly.
Credit
Discovery: Clayton Phipps, Mark Eatman, Chad O’Connor (2006)
Scientific significance noted by experts including Mark Norell, American Museum of Natural History
Fossils discovered on private land owned by Lige and Mary Ann Murray
The Dueling Dinosaurs are a true story of science, chance, and conflict—a once-in-a-lifetime fossil locked in legal limbo, still waiting to share its secrets with the world.
