| 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) |