| Tamaulipan mezquital(expression, desert, ecoregion, shrubland) |
| Texas blackland prairies(expression, grassland, temperate, savanna, shrubland) |
| Torngat Mountain tundra(expression, ecoregion, zone, tundra) |
| Upper Midwest forest-savanna transition(expression, forest, broadleaf, mixed, temperate) |
| Wasatch and Uinta montane forest(expression, forest, temperate, coniferous, ecoregion) |
| Western Great Lakes forest(expression, forest, broadleaf, mixed, temperate) |
| Western short grasslands(expression, grassland, temperate, savanna, shrubland) |
| Willamette Valley forest(expression, forest, broadleaf, mixed, temperate) |
| Wyoming Basin shrub steppe(expression, desert, ecoregion, shrubland) |
| Yukon Interior dry forest(expression, forest, ecoregion, boreal, taiga) |
| american bison(expression, animal, fauna, species) |
| antilocapra(noun, animal, fauna, species) |
| arctic fox(expression, animal, fauna, species) |
| bison(noun, animal, fauna, species) |
| crossosomataceae(noun, species, plant, flora) |
| cynomus(noun, animal, fauna, species) |
| elk(noun, animal, fauna, species) |
| free-tailed bat(expression, animal, fauna, species) |
| haplocerus(noun, animal, fauna, species) |
| lemming(noun, animal, fauna, species) |