There are National Natural Landmarks in Montana.
Name Image Date Location County Ownership Description Bridger Fossil Area Carbon federal (Bureau of Land Management) Contains fossils of Deinonychus antirrhopus. Bug Creek Fossil Area McCone federal (Charles M. Russell National Wildlife Refuge) Produced abundant remains of small, Cretaceous mammals. Capitol Rock Carter federal (Custer National Forest) A remnant of the once continuous blanket of Tertiary deposits that covered much of the Great Plains. Cloverly Formation Site Big Horn tribal land (Crow Nation) Contains early Cretaceous vertebrate fossils. Glacial Lake Missoula Sanders private Contains the best examples of giant flood ripples in the North American continent. Hell Creek Fossil Area Several mixed- state, private The type locality for Tyrannosaurus rex, Ankylosaurus magniventris, and Brachychampsa fontana fossils. Medicine Lake Site Sheridan federal (Medicine Lake National Wildlife Refuge) An exceptional example of the processes of continental glaciation, including till, outwash, eskers, kames, and terrace deposits. Middle Fork Canyon Gallatin federal (Bureau of Land Management) An outstanding example of a canyon cut across the grain of the geologic structure by a superposed stream. Red Rock Lakes National Wildlife Refuge Beaverhead federal A series of relatively undisturbed, high-altitude ecosystem types representative of pre-European settlement conditions. Square Butte (mountain) Chouteau federal (Bureau of Land Management) One of the best examples of banded magmatic rock in the United States.
See also
List of National Historic Landmarks in Montana