Shawmut, once a station for the Milwaukee Railroad was named for a local rancher. It is located along the Musselshell River near Deadman's Basin Reservoir. The Avaceratops lammersi dinosaur was discovered in the Shawmut area and it is now housed in the Upper Musselshell Museum in Harlowton.
Shamut is located in central area of Montana, east of Harlowton on US Highway 12.