Southwest North America 312 Ma Pennsylvanian (Middle)
Southwest North America 340 Ma MIssissippian (MIddle)
Southwest North America 370 Ma Devonian (Late)
Southwest North America 430 Ma Silurian (Early)
Southwest North America 470 Ma Ordovician (Middle)
Southwest North America 525 Ma Cambrian (Early)
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Allow yourself to be taken back into deep geologic time when strange creatures roamed the Earth and Western North America looked completely unlike the modern landscape.