Northwest Great Basin Ranges | Level 4 (Parent) |
         South-Central Oregon Ranges | Level 5 (Sibling) |
         Modoc-Lassen Plateau | Level 5 (Sibling) |
         Warner Mountains | Level 5 (Sibling) |
         Sheldon-Hart Mountain Refuges Area | Level 5 (Sibling) |
         Black Rock Desert Area | Level 5 |
                 Granite Range | Level 6 (Child) |
                 Hog Ranch Mountains | Level 6 (Child) |
                 Calico Mountains | Level 6 (Child) |
                 Black Rock Range | Level 6 (Child) |
                 Pine Forest Range | Level 6 (Child) |
                 Jackson Mountains | Level 6 (Child) |
                 Selenite Range | Level 6 (Child) |
                 Sheepshead Mountains | Level 6 (Child) |
                 Hannan Range | Level 6 (Child) |
                 Kamma Mountains | Level 6 (Child) |
         Steens Mountain Area | Level 5 (Sibling) |
         Trout Creek Area | Level 5 (Sibling) |
         Pyramid Lake Area | Level 5 (Sibling) |
         Northwest Humboldt River Area | Level 5 (Sibling) |
         Reno-Truckee Area | Level 5 (Sibling) |