The following is a list of National Natural Landmarks in Montana. There are 10 in total.
Montana National Natural Landmarks (clickable map)
| Name | Image | Date | Location | County | Ownership | Description | |
|---|---|---|---|---|---|---|---|
| 1 | Bridger Fossil Area | 1973 | Carbon | federal (Bureau of Land Management) | Contains fossils of Deinonychus antirrhopus. | ||
| 2 | Bug Creek Fossil Area | 1966 | 47°40′59″N 106°13′09″W / 47.68299°N 106.219193°W | McCone | federal (Charles M. Russell National Wildlife Refuge) | Produced abundant remains of small, Cretaceous mammals. | |
| 3 | Capitol Rock | 1976 | 45°35′45″N 104°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. | |
| 4 | Cloverly Formation Site | 
|
1973 | Big Horn | tribal land (Crow Nation) | Contains early Cretaceous vertebrate fossils. | |
| 5 | Glacial Lake Missoula | 
|
1966 | 46°56′20″N 114°08′37″W / 46.938889°N 114.143611°W | Sanders | private | Contains the best examples of giant flood ripples in the North American continent. |
| 6 | Hell Creek Fossil Area | 
|
1966 | 46°09′N 107°29′W / 46.15°N 107.48°W | Several | mixed- state, private | The type locality for Tyrannosaurus rex, Ankylosaurus magniventris, and Brachychampsa fontana fossils. |
| 7 | Medicine Lake Site | 1980 | 48°28′05″N 104°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. | |
| 8 | Middle Fork Canyon | 1977 | 46°07′54″N 111°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. | |
| 9 | Red Rock Lakes National Wildlife Refuge | 
|
1966 | 44°37′49″N 111°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. |
| 10 | Square Butte (mountain) | 
|
1980 | 47°28′35″N 110°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. |
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction