Region
Montana, USA and southern Alberta, Canada
A Late Cretaceous formation of the northern Western Interior, important for ceratopsian, hadrosaur, and theropod fossil records.
Fossil Atlas formation guide
What Dinosaurs Were Found in the Judith River Formation?
Judith River Formation records in Fossil Atlas currently connect to Centrosaurus, Corythosaurus, Gorgosaurus. The page maps selected modern fossil discovery records from Montana, USA and southern Alberta, Canada; it is not a complete ancient ecosystem reconstruction.
Mapped records
33 selected records
Modern fossil discovery map: pins show where selected fossil and specimen records were found today, not ancient Earth positions.
Notable animals
Centrosaurus, Corythosaurus, Gorgosaurus
These are the animals this batch adds or strengthens in the current Fossil Atlas dataset.
Explore
Explore the Judith River Formation cluster
FAQ
Judith River Formation fossil questions
What dinosaurs are linked to the Judith River Formation here?
The current Fossil Atlas cluster links Centrosaurus, Corythosaurus, Gorgosaurus. The list reflects current selected records and profile coverage, not every dinosaur ever reported from the region.
Is the Judith River Formation map complete?
No. It shows selected source-backed records that are useful for the atlas. It should be read with the visible map and source caveats.
Can I make a Judith River Formation expedition card?
Yes. The hotspot page feeds the card generator with its selected records, age range, notable animals, and source caveats.
Make it shareable
Make a Judith River Formation expedition card
Turn the Judith River Formation map into a 4:5 source-stamped card with notable animals and caveats.
Sources
Where this page gets its record context
Source links show where Fossil Atlas gets record and curation context. This page is an atlas guide, not an exhaustive scientific bibliography.
- PBDB records and stratigraphic metadata for selected fossil hotspots
- Fossil Atlas v1 manual curation and caveat review