|
Name |
Image |
Date |
Location |
County |
Ownership |
Description |
| 1 |
Attwater Prairie Chicken Preserve |
 |
1968 |
29°40′08″N 96°16′00″W / 29.668827°N 96.266751°W / 29.668827; -96.266751 (Attwater Prairie Chicken Preserve) |
Colorado |
federal/US Fish & Wildlife Service |
Contains the only significant segment of gulf coastal prairie. |
| 2 |
Bayside Resaca Area |
|
1980 |
26°13′45″N 97°20′50″W / 26.229081°N 97.347231°W / 26.229081; -97.347231 (Bayside Resaca Area) |
Cameron |
federal/US Fish & Wildlife Service |
Located in Laguna Atascosa National Wildlife Refuge, contains an excellent example of a resaca. |
| 3 |
Catfish Creek |
|
1983 |
31°54′27″N 95°54′09″W / 31.90750°N 95.90250°W / 31.90750; -95.90250 (Catfish Creek) |
Anderson |
state/Texas Department of Parks and Wildlife |
One of the few remaining undisturbed riparian habitats in the western Gulf Coastal Plain |
| 4 |
Caverns of Sonora |
 |
1965 |
30°33′18″N 100°48′44″W / 30.55500°N 100.81222°W / 30.55500; -100.81222 (Caverns of Sonora) |
Sutton |
private |
Contains unusual formations, such as bladed helictites and coralloid growths |
| 5 |
Devil's Sinkhole |
|
1972 |
30°00′57″N 100°12′31″W / 30.015773°N 100.208552°W / 30.015773; -100.208552 (Devil's Sinkhole) |
Edwards |
state/Texas Department of Parks and Wildlife |
A deep, bell-shaped, collapsed limestone sink. |
| 6 |
Dinosaur Valley State Park |
 |
1968 |
32°14′46″N 97°48′48″W / 32.246194°N 97.813375°W / 32.246194; -97.813375 (Dinosaur Valley State Park) |
Somervell |
state/Texas Department of Parks and Wildlife |
The only known source of distinct and full-grown sauropod footprints. |
| 7 |
Ezell's Cave |
|
1971 |
|
Hays |
private |
Houses at least 36 species of cave fauna. |
| 8 |
Enchanted Rock |
 |
1971 |
30°29′46″N 98°49′12″W / 30.496033°N 98.819952°W / 30.496033; -98.819952 (Enchanted Rock) |
Gillespie, Llano |
state/Texas Department of Parks and Wildlife |
A classic illustration of a batholith and of the exfoliation process. |
| 9 |
Fort Worth Nature Center and Refuge |
|
1980 |
32°50′36″N 97°28′38″W / 32.843450°N 97.477225°W / 32.843450; -97.477225 (Fort Worth Nature Center and Refuge) |
Tarrant |
municipal/City of Fort Worth |
Contains outstanding examples of the unique oak-hickory forest associations called cross timbers. |
| 10 |
Greenwood Canyon |
|
1975 |
|
Montague |
private |
A rich source of early Cretaceous mammalian fossils. |
| 11 |
High Plains Natural Area |
 |
1980 |
34°55′10″N 102°06′40″W / 34.919517°N 102.111118°W / 34.919517; -102.111118 (High Plains Natural Area) |
Randall |
federal/US Fish & Wildlife Service |
One of the best developed, least disturbed natural shortgrass climax communities remaining in the Great Plains. Part of Buffalo Lake National Wildlife Refuge. |
| 12 |
Little Blanco River Bluff |
|
1982 |
|
Blanco |
private |
An unspoiled example of the limestone bluff communities of the Edwards Plateau. |
| 13 |
Longhorn Cavern |
 |
1971 |
30°41′04″N 98°21′03″W / 30.684441°N 98.350970°W / 30.684441; -98.350970 (Longhorn Cavern) |
Burnet |
state/Texas Department of Parks and Wildlife |
State park contains an outstanding example of cave features formed during the phreatic phase of development. |
| 14 |
Lost Maples State Natural Area |
 |
1980 |
29°48′28″N 99°34′15″W / 29.807719°N 99.570697°W / 29.807719; -99.570697 (Lost Maples State Natural Area) |
Bandera, Real |
state/Texas Department of Parks and Wildlife |
An excellent illustration of Edwards Plateau flora and fauna. |
| 15 |
Muleshoe National Wildlife Refuge |
 |
1980 |
33°57′19″N 102°46′37″W / 33.955295°N 102.776973°W / 33.955295; -102.776973 (Muleshoe National Wildlife Refuge) |
Bailey |
federal/US Fish & Wildlife Service |
Saline lake beds, and shortgrass grama grasslands characteristic of the high plains. |
| 16 |
Odessa Meteor Crater |
 |
1965 |
31°45′25″N 102°28′45″W / 31.756998°N 102.479125°W / 31.756998; -102.479125 (Odessa Meteor Crater) |
Ector |
county |
Contains two meteorite impact craters. The largest is 550 feet (170 m) in diameter. |
| 17 |
Palo Duro Canyon State Park |
 |
1976 |
34°59′05″N 101°42′07″W / 34.984709°N 101.701867°W / 34.984709; -101.701867 (Palo Duro Canyon State Park) |
Armstrong, Randall |
state/Texas Department of Parks and Wildlife |
Spectacular canyon that is an excellent example of a landform created by running water. |
| 18 |
Santa Ana National Wildlife Refuge |
 |
1966 |
26°05′07″N 98°08′04″W / 26.08522°N 98.13448°W / 26.08522; -98.13448 (Santa Ana National Wildlife Refuge) |
Hidalgo |
federal/US Fish & Wildlife Service |
A living museum of the lowland forested area of the Lower Rio Grande Valley. |
| 19 |
Natural Bridge Caverns |
 |
1971 |
29°41′32″N 98°20′34″W / 29.692351°N 98.342760°W / 29.692351; -98.342760 (Natural Bridge Caverns) |
Comal |
private |
A multilevel cavern system containing unusual speleothems and intricate helictites. |
| 20 |
Cave Without a Name |
 |
2009 |
29°52′45″N 98°38′31″W / 29.8791769°N 98.6419260°W / 29.8791769; -98.6419260 (Cave Without a Name) |
Kendall |
private |
Contains rare and nationally outstanding examples of speleothems. |
