There are National Natural Landmarks in Montana .
Montana National Natural Landmarks (clickable map)
| Name | Image | Date | Location | County | Ownership | Description |
|---|---|---|---|---|---|---|
| Bridger Fossil Area | 1973 | Carbon | federal (Bureau of Land Management) | Contains fossils of Deinonychus antirrhopus . | ||
| Bug Creek Fossil Area | 1966 | 47°40′59″N106°13′09″W / 47.68299°N 106.219193°W | McCone | federal (Charles M. Russell National Wildlife Refuge) | Produced abundant remains of small, Cretaceous mammals. | |
| Capitol Rock | 1976 | 45°35′45″N104°07′12″W / 45.59584°N 104.120134°W | 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 |  | 1973 | Big Horn | tribal land (Crow Nation) | Contains early Cretaceous vertebrate fossils. | |
| Glacial Lake Missoula |  | 1966 | 46°56′20″N114°08′37″W / 46.938889°N 114.143611°W | Sanders | private | Contains the best examples of giant flood ripples in the North American continent. |
| Hell Creek Fossil Area |  | 1966 | 46°09′N107°29′W / 46.15°N 107.48°W | Several | mixed- state, private | The type locality for Tyrannosaurus rex, Ankylosaurus magniventris, and Brachychampsa fontana fossils. |
| Medicine Lake Site | 1980 | 48°28′05″N104°22′54″W / 48.468056°N 104.381667°W | 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 | 1977 | 46°07′54″N111°06′35″W / 46.131701°N 111.109849°W | 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 |  | 1966 | 44°37′49″N111°46′53″W / 44.630278°N 111.781389°W | Beaverhead | federal | A series of relatively undisturbed, high-altitude ecosystem types representative of pre-European settlement conditions. |
| Square Butte (mountain) |  | 1980 | 47°28′35″N110°14′31″W / 47.476499°N 110.241999°W | Chouteau | federal (Bureau of Land Management) | One of the best examples of banded magmatic rock in the United States. |
