Dig Sites

The Ischigualasto Formation preserves one of the oldest known dinosaur assemblages on Earth, dating to the very beginning of the Age of Dinosaurs some 231 million years ago.

One of the world's most productive dinosaur-bearing rock formations, stretching across 1.5 million km² of the western United States.

The Solnhofen Limestone is one of the most celebrated Lagerstätten (exceptional preservation sites) on Earth, preserving exquisite fossils of Jurassic organisms with their soft tissues intact.

The Tendaguru Formation of southeastern Tanzania is the richest Jurassic dinosaur site in Africa and provides the crucial African data point in global comparisons of Late Jurassic faunas.

The Yixian Formation of Liaoning Province, China, is the world's premier site for feathered dinosaurs, producing dozens of species that have transformed our understanding of the dinosaur-bird transition.

The Candeleros Formation sits just below the Huincul Formation in the Neuquén Basin sequence and has produced Patagotitan mayorum, described in 2017 as potentially the most massive dinosaur ever discovered.

The Huincul Formation of Neuquén Province, Argentina has produced some of the largest dinosaurs ever discovered, including Argentinosaurus huinculensis — possibly the heaviest animal to ever walk the Earth — and Giganotosaurus carolinii, one of the largest carnivorous dinosaurs known.

The Two Medicine Formation is most famous as the site where Jack Horner and colleagues discovered the first dinosaur nesting colonies in North America, revolutionising understanding of dinosaur parental behaviour.

The Judith River Formation is one of the richest Late Cretaceous fossil sites in North America, preserving a diverse assemblage of dinosaurs, mammals, crocodilians, turtles, and fish from a lush subtropical ecosystem.

The Kaiparowits Formation of southern Utah preserves a Late Cretaceous ecosystem that was geographically isolated from contemporaneous faunas in Alberta — separated by the Western Interior Seaway.

The Dinosaur Park Formation, exposed dramatically in Alberta's Badlands, is one of the most diverse dinosaur-bearing formations in the world, preserving over 35 species within a remarkably short geological timespan of roughly 1.5 million years.

The Djadochta Formation of the Gobi Desert is the most productive Late Cretaceous site in Asia, preserving iconic species like Velociraptor, Protoceratops, and Oviraptor in exquisite desert conditions.

The Horseshoe Canyon Formation captures a distinct Late Cretaceous ecosystem slightly older than the Hell Creek fauna, preserving hadrosaurs, ceratopsians, and tyrannosaurs that represent the generation of dinosaurs immediately before the final extinction.

The Lance Formation is the Wyoming equivalent of Montana's Hell Creek Formation, preserving a nearly identical end-Cretaceous fauna across state lines.

Hell Creek preserves the last two million years of the dinosaur age — the final chapter before the Chicxulub impact — and has produced the most complete skeletons of Tyrannosaurus rex, Triceratops, and Ankylosaurus ever found.