| paleocene geology(expression, geology, geohistory, orogeny) |
| cretaceous orogeny(expression, geology, history, orogeny) |
| eocene geology(expression, name, geology, orogeny) |
| north american orogeny(expression, geology, america, orogeny) |
| orogeny(expression, mountain, formation, geochronology) |
| paleogene alaska(expression, america, unit, paleontology, alaska) |
| paleogene british columbia(expression, geohistory, paleontology, columbia) |
| paleogene canada(expression, geology, history, canada) |
| paleogene geology of new mexico(expression, geology, mexico, orogeny) |
| paleogene geology of north dakota(expression, geohistory, north, orogeny, dakota) |
| paleogene geology of south dakota(expression, geology, dakota, orogeney) |
| paleogene geology of utah(expression, geology, orogeny, utah) |
| paleogene geology of wyoming(expression, geology, orogeny, wyoming) |
| paleogene idaho(expression, geohistory, america, orogeny) |
| paleogene mexico(expression, geohistory, unit, mexico, paleontology) |
| paleogene montana(expression, geohistory, formation, montana) |
| paleogene orogeny(expression, history, geochronology, orogeny) |
| paleogene united states(expression, geohistory, america, unit) |
| paleogene yukon(expression, geohistory, paleontology, yukon) |