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List of National Natural Landmarks in Montana

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There are National Natural Landmarks in Montana.

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″N 106°13′09″W / 47.68299°N 106.219193°W / 47.68299; -106.219193 (Bug Creek Fossil Area) McCone federal (Charles M. Russell National Wildlife Refuge) Produced abundant remains of small, Cretaceous mammals.
Capitol Rock 1976 45°35′45″N 104°07′12″W / 45.59584°N 104.120134°W / 45.59584; -104.120134 (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 1973 Big Horn tribal land (Crow Nation) Contains early Cretaceous vertebrate fossils.
Glacial Lake Missoula 1966 46°56′20″N 114°08′37″W / 46.938889°N 114.143611°W / 46.938889; -114.143611 (Lake Missoula) Sanders private Contains the best examples of giant flood ripples in the North American continent.
Hell Creek Fossil Area 1966 46°09′N 107°29′W / 46.15°N 107.48°W / 46.15; -107.48 (Hell Creek Fossil Area) Several mixed- state, private The type locality for Tyrannosaurus rex, Ankylosaurus magniventris, and Brachychampsa fontana fossils.
Medicine Lake Site 1980 48°28′05″N 104°22′54″W / 48.468056°N 104.381667°W / 48.468056; -104.381667 (Medicine Lake National Wildlife Refuge) 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″N 111°06′35″W / 46.131701°N 111.109849°W / 46.131701; -111.109849 (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 1966 44°37′49″N 111°46′53″W / 44.630278°N 111.781389°W / 44.630278; -111.781389 (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) 1980 47°28′35″N 110°14′31″W / 47.476499°N 110.241999°W / 47.476499; -110.241999 (Square Butte (mountain)) Chouteau federal (Bureau of Land Management) One of the best examples of banded magmatic rock in the United States.

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