Dinosaurs found in
Montana
75 kinds of dinosaur have been found in Montana, United States, from 441 recorded finds. The best known are Tyrannosaurus, Triceratops and Stegosaurus.
Most of the fossils come from the Hell Creek Formation, the Cloverly Formation, the Two Medicine Formation, the Judith River Formation and the Morrison Formation.
Where the fossils were found
From the field
Famous dinosaurs from Montana

Hell Creek Fm. · named 1905
Tyrannosaurus rex
12 mCarnivoreLate Cretaceous

Hell Creek Fm. · named 1889
Triceratops
9 mHerbivoreLate Cretaceous

Morrison Fm. · named 1877
Stegosaurus
9 mHerbivoreLate Jurassic

Morrison Fm. · named 1877
Allosaurus
9.5 mCarnivoreLate Jurassic

Ferris Fm. · named 1908
Ankylosaurus
8 mHerbivoreLate Cretaceous

Cloverly Fm. · named 1969
Deinonychus
3.4 mCarnivoreEarly Cretaceous to Late Cretaceous

Morrison Fm. · named 1878
Diplodocus
26 mHerbivoreLate Jurassic

Hell Creek Fm. · named 1943
Pachycephalosaurus
4.5 mHerbivoreLate Cretaceous
All 75 dinosaurs found in Montana
- Tyrannosaurus
- Triceratops
- Stegosaurus
- Allosaurus
- Ankylosaurus
- Deinonychus
- Diplodocus
- Pachycephalosaurus
- Nanotyrannus
- Apatosaurus
- Achelousaurus
- Edmontosaurus
- Troodon
- Aquilops
- Gorgosaurus
- Maiasaura
- Camarasaurus
- Daspletosaurus
- Ornithomimus
- Dromaeosaurus
- Thescelosaurus
- Corythosaurus
- Tenontosaurus
- Centrosaurus
- Stenonychosaurus
- Euoplocephalus
- Zuul
- Edmontonia
- Lokiceratops
- Saurornitholestes
- Acheroraptor
- Stegoceras
- Einiosaurus
- Brachylophosaurus
- Hypacrosaurus
- Sauropelta
- Leptoceratops
- Orodromeus
- Hesperosaurus
- Gryposaurus
- Monoclonius
- Oryctodromeus
- Kritosaurus
- Albertaceratops
- Prosaurolophus
- Vagaceratops
- Chirostenotes
- Brontotholus
- Sphaerotholus
- Zephyrosaurus
- Avaceratops
- Claosaurus
- Richardoestesia
- Panoplosaurus
- Spiclypeus
- Trierarchuncus
- Stellasaurus
- Microvenator
- Acristavus
- Montanoceratops
- Suuwassea
- Platytholus
- Paronychodon
- Citipes
- Prenoceratops
- Furcatoceratops
- Cerasinops
- Judiceratops
- Anzu
- Tatankacephalus
- Probrachylophosaurus
- Oohkotokia
- Gremlin
- Medusaceratops
- Rubeosaurus
