524 1st St. W.
Roundup, MT 59072
406-323-1525
The Museum’s “Dino Depot” displays Late Cretaceous fossils found in the area including the “Sir William” skull replica, a “First in Montana” Tetraphoneus (tyrannosaur) find; “Aimee” the Triceratops whose skull, frill and mid-section fossils come from the area’s ancient “Ingomar Oasis.” Other displays include a rare Ankylosaurus skull, a collection of tyrannosaur, hadrosaur and marine fossils and more. Seasonal hours of operation.
Fossil Facts:
1. Teratophoneus is known as a “southern” tyrannosaur, typically found in Utah/New Mexico. “Sir William” is the first recorded discovery in Montana.
2. The “Ingomar Oasis” site was named in 2022 with the discovery of “Aimee’s” right squamosal.
3. The “Ingomar Oasis” has produced fossils from over 10 species including crocodiles, turtles, fish, tyrannosaur, and a rare anylosaur.
4.The partial Ankylosaurus Magniventris skull found at the “Ingomar Oasis” is one of just a few ever discovered.
Where to Next on the Montana Dinosaur Trail?
Nearest to the West
Upper Musselshell Museum
Harlowton, 69 miles (1 hour)
US-12 west out of Roundup to Harlowton.
Nearest to the East
Garfield County Museum
Jordan, 121 miles (2 hours)
US 87 north from Roundup to State Hwy 244 to Winnett; US Hwy 200 east from Winnett to Jordan.
While You’re in the Area
Roundup Independence Days Extravaganza (R.I.D.E.)
Celebrate the 4th of July in true Montana style. Roundup’s annual R.I.D.E. event features parades, live music, family activities, food vendors, farmer’s markets, and one of the best fireworks shows in Central Montana. If you’re visiting in early July, this is a can’t-miss community tradition.
Riverwalk Along The Musselshell River
Take a peaceful stroll along the Musselshell River just minutes from downtown. Enjoy scenic views, open skies, and a relaxing taste of Montana’s landscape.
The Little Snowy Mountains
This Central Montana range invites visitors to explore scenic rolling landscapes, rich Indigenous and ranching heritage, and plentiful outdoor recreation amid grassy hills, ponderosa pine forests, and diverse wildlife.
Historic Downtown Roundup
Walk Main Street, grab a meal at a locally owned restaurant, and authentic small-town Montana shopping and hospitality.
More about Roundup
